HealthShare® Health Connect Incompatibility History (2024.1)

DP-11381: Remove _PUBLIC ownership from generated listing tables

Category: Business Intelligence
Platforms: All
Version: 2020.2.0

Listing tables are now generated so that they require explicitly assigned SELECT privileges.

For field list listings in a given cube, this will mean users must have SELECT privileges on both the source table for the cube and the generated <cube class>.Listing table for that cube.

For custom listings, SELECT privileges of user tables might be required to run the custom listing. If the custom listing uses the special $$$RESTRICT token, SELECT privileges on the <cube class>.Listing table will also be required.

DP-13501: Enforce valid cube name in cube compile

Category: Business Intelligence
Platforms: All
Version: 2020.4.0

Before this change, cube names that violated the documented rules could be successfully compiled though they may have caused other errors. With this change, these invalid cube names cause a compile error and must be corrected to successfully compile the cube.

DP-14014: Must recompile cubes that invoke UPDATEFACTSTEMP

Category: Business Intelligence
Platforms: All
Version: 2020.4.0

If you have any cubes that invoke the UPDATEFACTSTEMP task, you must recompile them before the next build or background synchronization.

DP-247608: Provide access to captions and descriptions of members using inherited cube methods

Category: Business Intelligence
Platforms: All
Version: 2022.2.0

If a level within a cube utilizes predefined members by using the <member> tags, the displayName and description attributes were not available through the utilities

 Cube.Class:%GetMemberCaption
 Cube.Class:%GetMemberDescription

As an example, adding a displayName and caption to the Comments dimension in the HoleFoods sample:

<dimension name="Comments" type="computed" dimensionClass="SQL" hasAll="false">
 <hierarchy name="H1">
  <level name="Comments" factName="MxComment">
   <member name="Complaints" 
     displayName="Complaints Member Caption"  
     description="Complaints Member Description"
     spec="WHERE $$$FACT %CONTAINSTERM('complained') OR $$$FACT %CONTAINSTERM('ranted')"/>
   <member name="Compliments" 
     spec="WHERE $$$FACT %CONTAINSTERM('happy')"/>
  </level>
 </hierarchy>
</dimension>

SAMPLES>Set cubeClass=##class(%DeepSee.Utils).%GetCubeClass("HOLEFOODS") 
SAMPLES>w $zobjclassmethod(cubeClass, "%GetMemberCaption", "Comments", "H1", "Comments", "Complaints")
 Complaints Member Caption
SAMPLES>w $zobjclassmethod(cubeClass, "%GetMemberDescription", "Comments", "H1", "Comments", "Complaints")
 Complaints Member Description

DP-283945+PLUS: Removal of %DeepSee.TaskMaster agents and associated code

Category: Business Intelligence
Platforms: All
Version: 2019.1.0

As part of the transition to Work Queue Manager %SYSTEM.WorkMgr agents, Business Intelligence %DeepSee.TaskMaster agents have been removed in this release. As a result, there are no longer low or high priority agents, as all agents are managed by %SYSTEM.WorkMgr and are created automatically when needed. In addition, associated methods like %SetAgentCount() and %GetAgentCount() have been deprecated.

DP-286613: Return calculated measure display names in %GetCubeMeasures output

Category: Business Intelligence
Platforms: All
Version: 2019.1.0

The second item in the %GetCubeMeasures() output list should be the caption. Before this change, for calculated measures, this method returned the name, not the caption as the second item. With this change, the second item correctly contains the caption. If your code relied on the name being returned in the second item for calculated measures, you should update your code.

DP-288615+PLUS: Recompile all cube classes

Category: Business Intelligence
Platforms: All
Version: 2019.1.0

When you upgrade to this release, you must recompile all Business Intelligence cubes. There are two reasons for this:

• In this release, the %DeepSee.Generator has improved the way deletes are handled when synchronizing. In order to incorporate this change, you must recompile all Business Intelligence cubes. If you do not recompile a cube, attempting to build this cube will encounter an error.
• In previous releases, compiling %DeepSee.Generator would not catch the error of including a list-based level that also defines a range expression. Consequently, these constructs would cause an error during build causing missing data in the cube. In this release, these errors are found during compile time and the user can correct the error.

DP-289207: Change in ResultSet timing

Category: Business Intelligence
Platforms: All
Versions: 2019.1.2, 2019.3.0

To ensure consistency, this release has changes in the timing of setting the %DeepSee.ResultSet. Consequently, code that previously worked may be accessing the ResultSet before the operation completes. To ensure that the ResultSet has been set, test that ResultSetObj.%GetStatus() has a value of 100 before accessing the ResultSet value.

DP-401734: Prevent missed updates from the DSTIME list when using %FixBuildErrors/%ProcessFact and %SynchronizeCube

Category: Business Intelligence
Platforms: All
Version: 2021.2.0

This change corrects a bug in which updates to a source record were not caught by a call to %SynchronizeCube() in the following scenario:

1. Multiple records are updated or inserted in the source class, and logged to ^OBJ.DSTIME.
2. CubeA, based on that source class, is synchronized, processing ^OBJ.DSTIME into ^DeepSee.Update.
3. %ProcessFact() is called for one or more records (but not all the updated records) on CubeB, which is also based on the same source class. This updates the facts in question and runs %SetCubeDSTime() for CubeB, marking it as up-to-date with ^DeepSee.Update as of the current time.
4. CubeB is synchronized and does not receive updates for records that were updated or inserted in step 1 but not processed in step 3.

Note that this change removes the automatic advancement of the cube's timestamp when using %ProcessFact(), so applications relying on %ProcessFact() for updates will need to manually advance the cube timestamp.

DP-402073: Must recompile cubes to see detail listings

Category: Business Intelligence
Platforms: All
Version: 2021.1.0

As part of a change to improve MDX query performance, this change stores certain cube-related data in a different location. This change requires that you recompile all cube classes that were created on a version prior to this change. If you do not recompile these classes, detail listings on those cubes will return no results.

DP-403240: Cube <expression> cannot have a period character in its logical name

Category: Business Intelligence
Platforms: All
Version: 2021.2.0

With this release, any cube <expression> element which uses the period (.) character in the logical name will throw a compile error. Cubes that were successfully compiled in a previous release will still function exactly as they did before until they are recompiled. You should update each <expression> element to remove any period (.) characters and recompile so that future compiles will succeed.

This change means that an intermediate expression in Architect can return an object with properties, rather than a single value.

DP-7373: Change in Advanced Filter Editor

Category: Business Intelligence
Platforms: All
Version: 2019.3.0

This change introduces the potential for a new pair of server requests where previously the client JavaScript was completely responsible for the processing. If the client-server lag times are high, this can increase the time to process the request. Although it is possible that this request succeeded in earlier versions, this situation most likely would have resulted in an error.

DTB739: Add stronger concurrency protection to %DeepSee.ResultSet

Category: Business Intelligence
Platforms: All
Versions: 2019.1.2, 2019.3.0

This changes the way that the %DeepSee.ResultSet operates during concurrent executions to preserve the integrity of results. This provides much deeper inspection of the primary components of a particular query, requiring that each writer to the query cache secure a lock on the query key and all axis keys before being granted access to change anything in either the results or axis caches.

DTB818: Store initial axis text in axis cache for KPI/MDX context reference

Category: Business Intelligence
Platforms: All
Versions: 2019.1.2, 2019.2.0

The cell context passed to a %KPI plugin's %dsCellContext environment variable could lose useful information due to the fact that it was rebuilt from the pre-processed list of members that actually exist in the cube data. This variable now contains the original requested MDX text for the slicer.

DP-13783: ZEN: Very large integers now serialized as JSON strings

Category: Compatibility Features
Platforms: All
Version: 2020.4.0

To avoid problems with languages such as JavaScript that cannot use double precision floating point numbers to store integers and cannot handle a value greater than 2^53-1, these values are now serialized as JSON quoted strings. The behavior with values less than 2^53 is unchanged.

DP-413293: Zen Reports: do not allow use of $DATASOURCE URL parameter by default

Category: Compatibility Features
Platforms: All
Version: 2022.1.2

Previously ZEN Reports would allow the report's datasource to be specified at runtime via the $DATASOURCE URL Parameter. If this is not defined, then we will use the DATASOURCE class parameter, and if that isn't defined we will use the ReportDefinition to generate the XML data. The ReportDefinition is the standard way to specify report data.

With this change, Zen Reports will no longer use the $DATASOURCE URL parameter by default. Developers are strongly encouraged to use the DATASOURCE class parameter to specify an external datasource if desired. If a report does require the $DATASOURCE URL, you can re-enable the previous behavior on a per-report or per-application basis by setting the parameter:

Parameter USEURLDATASOURCE = 1; 

in either the report class, or in the report's Application class. Setting this value is discouraged.

DP-415808: CPF file changes related to gateways

Category: CPF
Platforms: All
Versions: 2022.1.1, 2022.2.0

This change updates the Gateways section of the CPF file to reorganize the fields for each gateway type, and to add a resource field.

For each gateway type, the CPF file no longer has heartbeat properties. For all types except Remote, there is a new default Resource field. The UsePassphrase property has been removed.

DP-416498: Allow CPF properties to be set to ""

Category: CPF
Platforms: All
Versions: 2022.1.1, 2022.2.0

A bug has been fixed where in previous versions, when setting a CPF property to a null value, if there was a default value for the property, the default value would be used instead of setting it to null.

For example, when passing the Properties array to Config.Databases.Create:

set Properties("MountAtStartup")=""

Starting in 2022.1.1, we will actually set the property equal to the empty string. For required properties, this will throw an error similar to:

ERROR #5659: Property 'Config.Databases::MountAtStartup(1@Config.Databases,ID=)' required

If you encounter this issue after upgrading, simply remove the setting of the Properties array to "", or explicitly set it to the desired value as in the following example:

set Properties("MountAtStartup")=0

DP-417392: Change "iris merge" return status to follow UNIX® standard

Category: CPF
Platforms: All
Version: 2024.1.0

This change modifies how "iris merge" handles these cases:

1) If the merge file does not exist. In this case, we report an error and return exit status 0. This applies specifically to this command:

iris merge IRIS <file>

iris: Unable to find/open file     

 2) If the merge file does exist and the merge is successful, we report success and return exit status 0. This applies specifically to these commands:

iris merge IRIS <file>
iris merge IRIS

IRIS Merge completed successfully

With these changes, the merge commands match the UNIX® standard.

DP-417758+PLUS: Rename and move mirroring and sharding actions

Category: CPF
Platforms: All
Version: 2024.1.0

With these changes, the names are now "ConfigMirror" and "ConfigShardedCluster".

Before these changes, mirroring and sharding configuration parameters resided in Startup section:

[Startup]
MirrorMember=
MirrorPrimary=
MirrorSetName=
ShardClusterURL=
ShardMasterRegexp=
ShardMirrorMember=
ShardRegexp=
ShardRole=

[Actions]
ConfigMirror:Name=,Member=,Primary=
ConfigShardedCluster:ClusterURL=,Role=,Member=,MasterRegexp=,Regexp=

MirrorMember --> Member
MirrorPrimary --> Primary
MirrorSetName --> Name
ShardClusterURL --> ClusterURL
ShardMasterRegexp --> MasterRegexp (default is -0$)
ShardRegexp --> Regexp (default is -[0-9]+$)
ShardMirrorMember --> Member
ShardRole --> Role

This change also adds the classmethod SYS.ICM.ShardingCheck() to allow applications to determine if sharding configuration is complete.

DP-413775: Change a few DataMove APIs

Category: DataMove
Platforms: All
Version: 2022.1.0

Several of the DataMove API's have been changed to add a new first parameter "Name" in the DataMove.API class as follows:

MapInitialize(Name as %String, Namespaces As %String)
MapGlobalsCreate(Name as %String, Namespace As %String, GblName As %String, ByRef Properties As %String)
MapGlobalsDelete(Name as %String, Namespace As %String, GblName As %String) As %Status
MapGlobalsModify(Name as %String, Namespace As %String, GblName As %String, ByRef Properties As %String)

Customer will need to update their scripts to add this new parameter.

DP-426579: Disallow ByRef/Output qualified language=python method arguments

Category: Embedded Python
Platforms: All
Version: 2024.1.0

A compile error is now thrown when an argument to a method is defined as ByRef or Output if language=python; previously, no error was raised. This is because Python dooes not support these kinds of parameters.

FHIR-CUSTOM-METADATA-2020: FHIR users with custom metadata require a 2021.1 ad hoc before upgrading

Category: FHIR
Platforms: All
Version: 2020.4.0

Beginning in IRIS for Health 2020.1, if you wanted to use custom FHIR search parameters, you had to define a custom metadata set. In this version, defining FHIR metadata, including custom search parameters, has been migrated to FHIR packages. When you upgrade from an earlier version, the upgrade will remove any custom metadata sets, and configure the FHIR endpoint with the base FHIR package, either STU3 or R4, depending on what was in use before the upgrade. If you defined a custom metadata set in IRIS for Health 2020.1, 2020.2, or 2020.3 (even if you did not yet create custom search parameters), you must obtain a 2021.1 ad hoc with fix IF-2303 before performing an upgrade to IRIS for Health 2021.1. You should not upgrade to IRIS for Health 2020.4. If you are in this situation:

1. Before performing your upgrade, contact the WRC and obtain the 2021.1 ad hoc for IF-2303.
2. Upgrade your system to IRIS for Health 2021.1 according to the upgrade instructions, but do not run the post-upgrade method UpgradeFHIR().
3. Apply the ad hoc to your upgraded system.
4. Run the post-upgrade method and other steps described in Upgrading InterSystems IRIS for Health.
5. If you have any custom search parameters, after you upgrade you must manually migrate them to a FHIR package and apply them to the endpoint before they can be used:
   1. Using the files that you used to originally create the custom metadata set, follow the instructions in Applying Packages to an Endpoint to apply packages to the endpoint.
   2. Re-index the endpoint as described in Re-indexing an Endpoint.

FHIR-ENDPOINTS-2020: Must manually upgrade FHIR endpoints

Category: FHIR
Platforms: All
Version: 2020.4.0

You must manually upgrade your existing FHIR endpoints after the installation process. For details on the manual upgrade, see Upgrading Pre-2020.4 FHIR Endpoints in the InterSystems IRIS for Health Installation Guide.

FHIR-STU-2020: FHIR STU3 data transformations replace legacy transformations

Category: FHIR
Platforms: All
Version: 2020.2.0

New classes and methods have been introduced to transform SDA to FHIR and vice-versa. The transformation class and methods introduced in 2019.1 are now deprecated; you must modify any custom code that called these methods to use the new transformation classes and methods. For more information, see Upgrading Legacy Transformations.

HSHC-2110: Legacy FHIR -- name change of HSFHIRErr

Category: FHIR
Platforms: All
Version: 2020.1.0

The domain name (global name) for FHIR® error message localization has changed from HSFHIRErr to HSFHIRXErr for the legacy FHIR DSTU2/STU3 implementation. If existing custom code for FHIR includes logic for evaluating method calls to find specific error codes in errors in the HSFHIRErr domain, that code will need to be modified to account for the name change from HSFHIRErr to HSFHRXErr.

HSHC-250: Remove Health Connect FHIR setup from HS.Util.Installer

Category: FHIR
Platforms: All
Version: 2019.1.0

The following FHIR-related install methods from previous releases have been removed and replaced in this release of Health Connect:

• HS.Util.Installer.InstallFHIRServer() has been replaced by HS.HC.Util.Installer.FHIR.Install()
• HS.Util.Installer.InstallOAuth2() has been replaced by HS.HC.Util.Installer.OAuth2.ConfigureSampleOAuth()

DP-408952: Link to Rule Editor from SMP

Category: Graphical Editor
Platforms: All
Versions: 2022.1.5, 2022.2.0

With this change, the Rule Editor is now linked in the Management Portal under Interoperability. This change requires users to add the /ui prefix as a possible forwarding path to the custom web server.

DP-175565: Add support for deleting Procedures

Category: Healthcare Interoperability
Platforms: All
Versions: 2019.1.2, 2020.1.0

With this change it is now possible to delete procedures via HL7 and SDA interfaces. In HL7, PR1-20 (Procedure Action Code) and in SDA, the ActionCode property of HS.SDA.Procedure can be set to "D" to delete the procedure identified (matching on ExternalId or ProcedureCode/ProcedureDate/ProcedureTime). PR1-20 or Procedure.ActionCode can also be set to "C" to delete all ("clear") procedures in the encounter of the given procedure.

It may be necessary to update interfaces now that we support this field, particularly if a data provider is sending in D or C in PR1-20 and these do not have the same meaning as described above.

HSHC-1442: DocumentToProvideAndRegister.xsl had issue with repeating fields inside author

Category: Healthcare Interoperability
Platforms: All
Versions: 2019.1.1, 2019.2.0

When DocumentToProvideAndRegister encountered multiple institutions inside an author, it was placing each institution in a separate authorInstituion tag. Now, when multiple author institutions appear inside an author, they are placed within value tags inside a single authorInstitution valuelist.

HSHC-1790: XDSb Query Requests with CreationTime parameters does not return OnDemand results

Category: Healthcare Interoperability
Platforms: All
Versions: 2019.1.1, 2019.3.0

When you submit an XDSb Query Request, two of the available parameters are $XDSDocumentEntryCreationTimeFrom and $XDSDocumentEntryCreationTimeTo. These let you specify a range of CreatedOn dates for the documents. However, querying OnDemand documents using these parameters erroneously returned zero results.

DP-12790: Restore default superserver port number to 1972

Category: Installation
Platforms: UNIX®
Version: 2020.3.0

In this and future releases, the default SuperServer port is 1972. If this port is not available, then the default port will be 51773 or the next free port after this. In previous releases, the default SuperServer port was 51773.

Note: If you are upgrading an instance of an earlier release with full installation kits on a server platform, this change does not impact you. The SuperServer port from the instance is preserved through the upgrade.

DP-403425: Installer leaves duplicate ODBC driver

Category: Installation
Platforms: Windows
Version: 2021.1.0

To allow both Caché and InterSystems IRIS to both exist on a system, the installer should not remove the Caché ODBC driver. On Windows, a new InterSystems IRIS install may result in a duplicate entry for "IRIS ODBC Driver" in add/remove programs applet. You can safely uninstall the older "IRIS ODBC Driver".

DP-408131: Accessing install directory on Windows from ODBC requires additional privileges

Category: Installation
Platforms: Windows
Version: 2022.1.0

Users in "Authenticated Users" group no longer are able to write files into the installation directory in locked down install without additional privileges.

DP-414881: Require xlC runtime libraries 16.1.0.9+ on AIX

Category: Installation
Platforms: AIX
Version: 2024.1.0

With this change, the InterSystems IRIS installer on AIX will require  xlC.rte and libc++.rte version 16.1.0.9 or above.

DP-416117: Enable more minimal installation

Category: Installation
Platforms: Windows
Version: 2024.1.0

With this change, the Windows installation will have a new feature under Development with the name "Other Development Libraries" with internal name "development_other". All components under Development that are not assigned to any sub-feature are now contained in "Other Development Libraries".

With this change, the installer can create a more minimal installation.

DP-422913: changes to Unix installer platform detection

Category: Installation
Platforms: AIX
Version: 2023.3.0

Users that perform an installation in unsupported environment for testing purposes must explicitly set the ISC_PACKAGE_PLATFORM environment variable to the platform name.

DP-425275: Replace %Service_Native on upgrade and new install

Category: Installation
Platforms: All
Version: 2024.1.0

Instances that previously used %Service_Native in roles such as %Developer or %Manager must review the roles and consider if they also need %Native_Transaction or %Native_Concurrency.

DP-429584: Unable to launch documentation from the cube

Category: Installation
Platforms: All
Versions: 2023.2.0, 2023.3.0, 2024.1.0

If you are using Windows IIS as your web server or have upgraded from either 2023.2 or 2023.3, then you cannot open documentation through the launcher by default. To manually create a workaround, see the "Connect Your Web Server Manually" section of "Access the Management Portal and Other Built-in Web Applications Using Your Web Server."

DP-13043: Remove support for H2OSA provider

Category: IntegratedML
Platforms: All
Version: 2020.3.0

The H2OSA provider is no longer supported. If you have used it with a previous release, you must switch to a different provider.

DP-10957: System defaults setting now checks values when specified

Category: Interoperability
Platforms: All
Versions: 2019.1.1, 2020.2.0

In previous releases, invalid values in the default system settings would not be checked until the values were applied in a production. This change ensures that system default settings are valid when specified. If you have invalid system default settings that were saved by a previous release, saving them in this release removes the values. Settings are validated by calling the IsValid() method of the appropriate class. If no IsValid() method is defined, then no validation is performed.

DP-11139: Changes in X12 validation schema paths

Category: Interoperability
Platforms: All
Version: 2020.1.0

To enhance the validation feature, this release changes the validation schema paths for hierarchical structures. If you have code specifying these paths, you will need to update them to correspond to these changes. For example, a segment in the 2000B loop of HIPAA_5010:837 would have had path 2000B.segName before, but is now 2000A.2000B.segName.

DP-11192: Error checking on timeout settings

Category: Interoperability
Platforms: All
Version: 2020.2.0

This release adds error checking to the timeout settings in the production configuration page. If the requested timeout interval exceeds 1 hour, the page treats it as an error and does not allow the setting. Since it is extremely unlikely that you would want to delay the instance shutdown for an hour, this is most likely an error. However, if you really need such an extended time to wait for the production component to stop, you can still set shutdown to be longer than an hour using a script that calls an Ens.Director method.

DP-11323: Make PEX callback methods abstract

Category: Interoperability
Platforms: All
Version: 2020.3.0

The PEX class hierarchy has changes to reduce errors when users overload methods rather than override them. With this change, all methods that should be overridden by user code are marked as abstract. If you define a subclass and do not override these methods, you will get a compile error. Before this change, the compilation would succeed but the user callback code would not execute correct because the default code would be called instead. The documentation stated that these methods were abstract and needed to be overridden but this was not enforced by the code.

DP-11557: XML VDoc character escape changes

Category: Interoperability
Platforms: All
Version: 2020.3.0

In XML VDoc, when you use setValueAt() to set the value at a node, you can specify a value that consists of mixed content (that is, a value that consists of a mix of element and text nodes). This change ensures that if a < (left-angle) character appears without a closing XML /> or </, then the < is treated as normal text and is XML escaped (replaced by <).

Before this change, this would have been treated as mixed content and would have caused an error. If you have code to handle this expected error, you should examine this case.

See Using Mixed Content When Setting Paths.

DP-11796: PEX library changes

Category: Interoperability
Platforms: All
Version: 2020.3.0

With this change, we use a different serialization library and we no longer use the jackson library. Consequently, your production settings should point to the intersystems-utils-3.1.0.jar provided and not to the jackson library. If your code references the jackson library, you must update it or install the jackson library.

DP-12116: Contents tab of Message Viewer now limits output for XML-enabled objects

Category: Interoperability
Platforms: All
Version: 2020.3.0

To improve efficiency in displaying XML-enabled objects, large XML objects may not be fully serialized in the message viewer Contents tab. To see the fully serialized value, you must now use the Full Contents link.

An XML comment will be displayed if the contents are truncated.

DP-12412+DP-13124: Better handling of X12 documents

Category: Interoperability
Platforms: All
Version: 2020.3.0

There are several changes in how X12 documents are handled:

• Change handling poorly formatted documents — improved handling of certain poorly formatted documents means that the issues with these documents are logged in the Event Log and then handled by sending an appropriate Reply document, rather than these documents resulting in the service failing and documents not being deleted. If you are relying on service failures to identify flaws in the X12 document, you should look at the Reply document instead.
• Validation change — this change now includes code values in validations that were previously ignored. If you are using validation with the flags r, u, or t, then some errors that would have been missed in previous versions will now be caught. This change also adds a new segment, CTX-11, to the validation style schema for HIPAA_5010:999. This does not impact any code for setting the CTX-5() segment, but does mean that if a user has code for getting values from the CTX segments, and the document they are inspecting has a Business Unit Identifier, then that CTX segment will have to be accessed using path 2000().2100().CTX-11 instead of the 2000().2100().CTX-5() which is used for Segment Context. This makes no difference in either setting or getting values using the new style schema.
• Change in allowed order of segments — this change allows segments to be in any order permitted by the standard rather than requiring them to be in the specific order as listed in the standard. This allows valid documents to pass validation where in previous releases, they would have failed. This change should not require any change in your code unless you were using the wrong property path to get the value from some segment to work around this incorrect behavior; in that case you need to switch to using the correct property paths.

DP-12524: Change default of SKIPMESSAGEHISTORY in Ens.BusinessProcess to true

Category: Interoperability
Platforms: All
Version: 2020.3.0

With this change, if custom business process code accesses the internal %MessagesSent or %MessagesReceived array, then the class parameter SKIPMESSAGEHISTORY needs to be overwritten and set to 0.

This MessagesSent and MessagesReceived logging information is separate from the Ens.MessageHeader objects that are created for the requests sent and responses received by a business process. The Ens.MessageHeader objects are not controlled by the SKIPMESSAGEHISTORY parameter.

DP-12559: Activity monitoring changes

Category: Interoperability
Platforms: All
Version: 2020.3.0

The activity monitoring pages now distinguish between days based on the combination of UTC and local time. This means when querying the Ens_Activity_Data.Days table for a specific TimeSlotUTC or TimeSlot, it is necessary to check if there are 2 rows per unique TimeSlotUTC or TimeSlot: One row when TimeSlot is different from TimeSlotUTC and one row when TimeSlot is the same as TimeSlotUTC. The actual value is the sum of these two rows.

DP-12609: Changes to creating interoperability namespace with %Installer

Category: Interoperability
Platforms: All
Version: 2020.3.0

Before this change, if you used the %Installer.Installer class to make an interoperability production enabled namespace, it would set the node to a fixed portal URL. It now sets it to the empty string, which is the typically desired behavior. If you wish to set the node to a fixed portal URL, you can do this with the following:

Set ^%SYS("Ensemble","InstalledNamespace",tNSUpper)=""

DP-12694: RecordMap error handling changes

Category: Interoperability
Platforms: All
Version: 2020.3.0

The error detection for the RecordMap service is now stricter with the ParseOnly flag selected. Before this change, errors would be ignored with ParseOnly even if the AlertOnError flag was enabled. With this change, if the AlertOnError flag is enabled and a record fails validation, then an alert is sent even if ParseOnly is selected.

This change also corrects the situation when previously no batch would be sent if the FatalErrors setting was equal to ParseOnly and the last record failed to save and there was at least one good record in the batch.

DP-12727: X12 schema changes

Category: Interoperability
Platforms: All
Version: 2020.4.0

This release includes additional keyfields in X12 schemas. In some places, unnecessary schemas or incorrect loops have been removed. If your code relies on the existence of these incorrect elements of the schema, you must revise it.

DP-12945: .NET version change

Category: Interoperability
Platforms: All
Version: 2020.4.0

The Interoperability .NET Gateway now supports Core 2.1 version and the default value is now 4.5 instead of 2.0. If your application is dependent on the default value and needs the 2.0 version, you must explicitly specify it.

DP-13935: Return value change for OneWay EnsLib.HTTP.GenericService

Category: Interoperability
Platforms: All
Version: 2021.1.0

Before this change, for any custom code that subclassed EnsLib.HTTP.GenericService and had enabled OneWay, an "HTTP/1.1 200 OK" would be returned to the caller. This is now corrected to ensure returning an "HTTP/1.1 202 Accepted" to the caller.

DP-280650: Messages bank changes

Category: Interoperability
Platforms: All
Version: 2019.1.0

Before this change, HTTP, REST and SOAP Generic messages were sent to the Message Bank as Ens.StreamContainer and did not include the HTTP headers. This change causes these messages to be sent to the Message Bank as an XML projection and includes the HTTP headers. Unchanged from previous releases, you cannot resend these Generic messages. If you have code that assumes that these messages are stored as StreamContainer, you should modify the code.

DP-286249: Java Business Host changes

Category: Interoperability
Platforms: All
Version: 2019.1.0

The Java Business Hosts BusinessOperation OnInit method has been enhanced and the method arguments have changed. The OnInit method now gets information about the production though a Production object returned in a parameter. To enable this, you must now specify credentials when creating the BusinessOperation in the same way that you specify them for the BusinessService.

The new Java com.intersystems.gateway.bh.BusinessOperation.OnInit() method is:

public class javahostsOperation implements BusinessOperation {


  @Override
  public boolean OnInit(Production arg0) throws Exception {
  // TODO Auto-generated method stub
  return false;
  }
...

The Production object is passed to the BusinessOperation OnInit method in the same way that it is provided to the BusinessService OnInit method. In InterSystems IRIS 2018.1.1 the OnInit method parameter is an array of strings that provides only some of the information available from the Production object.

If you have Java Business Hosts code from the previous version, you must update the code to use the new method parameter.

There are the following other changes in Java Business Hosts:

• In order to access the Java Business Hosts portal page, the user needs either the %Ens_JBH or %Ens_Code privilege.
• In previous versions, Java Business Services and Operations always used Ens.StreamContainer messages within the production. In this release, they use Ens.StringContainer messages for strings unless the string is very large. In that case, they use Ens.StreamContainer messages.

DP-287038: Remove %CSP.Util.EnsStart class

Category: Interoperability
Platforms: All
Version: 2019.1.0

The class %CSP.Util.EnsStart has been removed. Any application calling the method ##class(%CSP.Util.EnsStart).IsEnsembleInstalled() must be changed to call ##class(%EnsembleMgr).IsEnsembleInstalled(). Note that on InterSystems IRIS, this method will always return true.

DP-287182: Fixed typo in HL7 schemas v2.1, v2.2, and v2.3

Category: Interoperability
Platforms: All
Version: 2019.1.0

In previous versions, there was an error in the Version 2.1, 2.2, and 2.3 HL7 schemas. The structure ADR_A19 was incorrectly listed as ARD_A19. This error has been corrected in this release. If you have code that references ARD_A19, you should either correct the code or define a custom schema with ARD_A19 that is a duplicate of the correct ADR_A19 definition.

DP-288154: Change to Ens.Util.XML.SecuritySignature class

Category: Interoperability
Platforms: All
Version: 2019.1.0

Before this change, the Ens.Util.XML.SecuritySignature class extended the %XML.Security.Signature class. With this changee, it no longer extends this class. You can continue to call ValidateSAML() in Ens.Util.XML.SecuritySignature, but if you called any other methods in Ens.Util.XML.SecuritySignature, you must change your code to call %XML.Security.Signature directly.

DP-288880: Change in queue wait time calculation

Category: Interoperability
Platforms: All
Version: 2019.1.0

To improve the efficiency of the Ens.MonitorService, this release changes the way the queue wait time is calculated. For business hosts with a pool size of 1, the amount of time the active message has taken to be processed is now counted s part of the queue waiting time. In rare cases, this could change how InterSystems IRIS behaves in responding to the QueueWaitTime alert setting.

DP-289579: SOAP outbound adapter clears HTTP headers

Category: Interoperability
Platforms: All
Version: 2019.1.0

The SOAP Outbound Adapter should clear the SOAP client HTTP headers after completion of the SOAP call. In previous releases, it was only clearing the HTTP headers after a successful call and was not clearing them after a failure. In this release, the SOAP Outbound Adapter clears the SOAP client HTTP headers after each Invoke(), InvokeMethod(), or InvokeWithSOAPBody() call, whether the call succeeds or fails. If you are using the SOAP wizard to generate the class, there is no compatibility issue. If you have created custom code that uses the SOAP Outbound Adapter and relied on the HTTP headers not being cleared, you should modify your code to ensure that the headers are set correctly before each call.

DP-290238: New default behavior for validation in Add Router Wizard

Category: Interoperability
Platforms: All
Version: 2019.1.0

In this release, the validation default has changed when creating a new router with the Add Router wizard. This does not impact any existing routers that were created with the previous wizard. In the previous release, if you left the validation field empty for routers that support validation, such as an X12 router, validation was disabled. In this release, if you leave the field blank in the wizard, validation is set to the value specified in system defaults, if one is specified. Otherwise, it gets the default value, which enables validation for routers that support it. The wizard has a new check box to disable validation.

DP-291017: Display change for settings in custom category

Category: Interoperability
Platforms: All
Version: 2019.1.0

If a user defines a property in a Business Host or Adapter class, they can also include it as a setting, by adding it to the SETTINGS parameter. Within the SETTINGS parameter, if the property name is followed by ":" and additional text, that second piece is used as the category under which the settings will be displayed in the Settings tab on the Production Configuration page. There are some predefined categories, such as Info, which is displayed as "Informational Settings", and Alerting, which is displayed as "Alerting Control", but the user can also create a custom category. In previous releases, if the category specified for a setting was a custom setting, the word "Settings" would always be appended to the specified name as the display category. In this release, the category will be displayed as specified without "Settings" appended to it. If you want to have the word Settings included in the category as displayed, you should add it to the category in the SETTINGS parameter.

DP-292072: Studio users need added privilege to run stored procedures

Category: Interoperability
Platforms: All
Version: 2019.1.0

In this release, developers using Studio will need execute privileges on stored procedures for some actions. This privilege is Ens_Config.Production_Extent. If a developer has the role %EnsRole_Developer or %EnsRole_Administrator, then the developer has this privilege.

DP-400051: Production export includes custom base schemas

Category: Interoperability
Platforms: All
Version: 2021.1.0

The Interoperability Production Code Export will now include custom base schemas if appropriate. The query EnumerateVDocSchemas now also returns the Base value.

DP-404469: New privilege needed to schedule Ens.Util.Tasks.Purge* tasks

Category: Interoperability
Platforms: All
Version: 2022.1.0

To schedule Ens.Util.Tasks.Purge* tasks, the user must have the %Ens_PurgeSchedule:USE privilege, which is granted by the %EnsRole_Administrator role, and which can be added to custom roles. The %Ens_MessageResubmit and %Ens_SequenceManager resources no longer exist; no customer code should have referenced them directly.

DP-405689: BPL calls now respect async="true" setting

Category: Interoperability
Platforms: All
Version: 2021.2.0

In previous releases, BPL calls with async="true" were run synchronously, not asynchronously. In this release, this setting is respected and the call be will run asynchronously.

DP-412625: Interoperability XML virtual document schema correction when collapsing single child generation

Category: Interoperability
Platforms: All
Version: 2022.2.0

When a schema has a generation of single properties, the collapse mechanism could lead to the final child node not being represented properly in the schema. This is now corrected.

DP-412629: Improve XML Virtual Document support for 'any' element

Category: Interoperability
Platforms: All
Versions: 2022.1.1, 2022.2.0

Before this change, when setting XML data to an 'any' element of an XML Virtual Document, the 'any' tag would be included in the output.

Also when using a sub-transform, the XML representation used to set to a target property of element type 'any' would not include the top level. This is also corrected. The correction is to the EnsLib.EDI.XML.Document SetSubDocument() method.  This method inserts the XML representation of pSubDocument into the target document at the path specified by pPropertyPath. The XML representation is the GetValueAt using "/1" as the property path except if the target Property Path where the sub document is to be set is of type "any" then the XML representation of pSubDocument retrieved  will be the full document including top element i.e. path "/"

DP-413564: Correct Interoperability Reply Code Action D triggering Alert On Error if retried

Category: Interoperability
Platforms: All
Version: 2022.2.0

The Interoperability Reply Code Action D would only trigger an Alert On Error if there had not been a prior action [R(etry)]. This is now corrected. If for example the Reply Code Action is E=RD and Alert On Error is enabled, then an alert will be sent for the Retry and also the Disabling if the failure timeout is reached.

DP-414056: Prevent end user naming of Interoperability Host Names with reserved leading underscore

Category: Interoperability
Platforms: All
Version: 2022.2.0

With this change, host names cannot start with an underscore (_) character. If a production includes hosts whose names have the leading underscore, there is a compilation error when you compile the production class.

DP-415945: Interoperability Java and DotNet Gateway services modifications for core api change

Category: Interoperability
Platforms: All
Versions: 2022.1.1, 2022.2.0

The classes EnsLib.JavaGateway.Service and EnsLib.DotNetGateway.Service have a new exposed setting in the Production Configuration page of "External Language Server Name" (property %gatewayName).

The value of External Language Server Name is a name given in the Management Portal at System > Configuration > External Language Servers

For an EnsLib.JavaGateway.Service, it can be %Java Server or a custom Java type entry. (Note that when used with a SQL Business Service or Operation that uses JDBC, it is still a Java type entry and not JDBC type)

For an EnsLib.DotNetGateway.Service, it can be %DotNet Server or a custom .NET type.

  Once External Language Server Name is specified, it supersedes the settings in Server and Port and the associated gateway configuration settings such as classpath , heartbeat, use passphrase and JVM.

Note it is now not possible to start a gateway that uses a passphrase without using an External Language Server Name.   The superclass EnsLib.JavaGateway.Common used by Services and Operations that use the gateway now identifies if the associated Java Gateway specifies an External Language Server Name  and uses that value rather than the Server and port values to connect to the relevant proxy gateway. 

It is intended that there will be no need for EnsLib.JavaGateway.Service and EnsLib.DotNetGateway.Service items at a later date.

DP-417168: Record Mapper and EDI Document Viewer file view permissions check

Category: Interoperability
Platforms: All
Version: 2022.1.2

The Interoperability Record Mapper and EDI Document viewer management portal pages enforce holding the privilege %Ens_ViewFileSystem:USE before allowing the user to select a file using the file select dialog popup. This change adds the same check before a file is opened.

DP-417230: Fixed maximum length of monetary amount in HIPAA_5010 X12 validation schemas

Category: Interoperability
Platforms: All
Version: 2024.1.0

This change reduces the maximum length for each 782 element (monetary amount) in our HIPAA_5010 validation schemas. Now this maximum length is 10.  It also fixes length validation for decimal elements to not count either the "-" sign or "." if present. As a consequence, a document which had previously passed SNIP validation now fails when this element is too long.

This change brings the schemas into compliance with section B.1.1.3.1.2 of the Implementation Guides for the HIPAA_5010 schemas.

Note, this change does not address the possibility of implied places for cents because we do not provide validation on maximum value.

DP-421559: [Interoperability] System Default Settings now supports PoolSize, Enabled, TestingEnabled and ActorPoolSize

Category: Interoperability
Platforms: All
Version: 2023.3.0

System Default Settings previously ignored any entries that matched an item's Enabled or PoolSize setting or a production's ActorPoolSize or Testing Enabled setting. With this change, the System Default Settings no longer ignore such entries.

DP-423063: [Interoperability] BPL SQL action to return status error if generated embedded sql reports an error

Category: Interoperability
Platforms: All
Version: 2023.3.0

The BPL SQL action now returns an error status if the generated SQL commands return a SQLCODE error. This allows the use of the BPL error handling mechanisms.

DP-423783: [Interoperability] Business Process %MasterPendingResponses structure change

Category: Interoperability
Platforms: All
Version: 2023.3.0

Business process %MasterPendingResponses list has been converted from a list to a parent/child relationship with Ens.BP.MasterPendingResponse and appropriate indices. Any custom code that iterated over the internal %MasterPendingResponses using GetAt() with sequential number iteration to the count value should be modified to use the parent/child collection methods of the class, such as Previous() and GetNext(). After an upgrade, any incomplete business process thread data must be converted using the Ens.BP.Utils.Upgrade.UpgradePendingResponsesStorage() method.

DP-426490: Honor Business Operation use of overridden OnFailureTimeout setting of ..Retry to 1

Category: Interoperability
Platforms: All
Versions: 2023.1.3, 2024.1.0

If custom Business Operations implemented OnFailureTimeout and that method sets ..Retry to 1, then the operation will not continue to retry beyond the FailureTimeout value.

DP-5315: EnsLib.HTTP.GenericMessage now explicitly defines XMLNAME parameter as well as XMLTYPE

Category: Interoperability
Platforms: All
Versions: 2019.1.1, 2019.2.0

With this change, Ens.StreamContainer and its subclasses can be deserialized from XML. Ens.StreamContainer and subclasses EnsLib.HTTP.GenericMessage,EnsLib.SOAP.GenericMessage,EnsLib.REST.GenericMessage and Ens.MFT.StreamContainer can now be deserialized from XML. This means for example they can be resent from the Message Bank or tested in the DTL editor.

As part of the correction, EnsLib.HTTP.GenericMessage now explicitly defines XMLNAME parameter as well as XMLTYPE. If you have defined any custom subclasses, you need to modify them to account for this change; override the XMLNAME parameter as required for your code.

DP-6920: New X12 validation may impact previously ignored flags

Category: Interoperability
Platforms: All
Versions: 2019.1.1, 2019.3.0

This change adds element-level validation for X12 documents.

The behavior for existing X12 validation flags in routers is unchanged. However, in the unlikely event that you have specified extra validation flags that were not previously valid, the behavior may change. If you specified a nonexistent validation flag, it would have been ignored, but if the flag now matches a new validation flag, the specified validation will be performed.

For a list of the new validation flags, see Validation in Routing X12 Documents in Productions.

DP-8848: Changes in syncresponses array in BPLs

Category: Interoperability
Platforms: All
Version: 2019.4.0

The syncresponses array was not being correctly populated with the callresponses. Instead the process's response object was being used. It is unlikely that custom code will rely on syncresponses containing the response object. However, if this is the case then reworking of the code will be necessary.

DP-8962: Changes to EnsLib.EDI.Segment class

Category: Interoperability
Platforms: All
Version: 2019.4.0

This change removes the RawContent property from the EnsLib.EDI.Segment class.

If you have subclassed EnsLib.EDI.Segment and are making use of the RawContent property (this would require creating the getter method RawContentGet()), then you now have to add RawContent to the list of properties in your custom class since it would no longer be inheriting this property from EnsLib.EDI.Segment.

DP-9152: Changes in HIPAA Schema

Category: Interoperability
Platforms: All
Version: 2019.4.0

This change fixes the name of the ISA:11 field for HIPAA_5010. The old name of Interchange Control Standards Identifier was correct for older versions, but the purpose of this field changed in version 403 to now be the Repetition Separator. If you have used the HIPAA_5010 schema and are getting or setting this field using the property path, ISA:InterchangeControlStandardsIdentifier, you will need to switch to using ISA:RepetitionSeparator or ISA:11.

DP-9264: Changes in X12 acknowledgment documents

Category: Interoperability
Platforms: All
Version: 2019.4.0

This change corrects the values of many fields in X12 Acknowledgement (997 and 999) Documents that are created as a reply to incoming X12 documents.

• GS07 (Responsible Agency Code) is now set to "X" (ASC X12) instead of blank
• GS08 (Version / Release / Industry Identified Code) for 999 replies is now set to 005010X231A1
• ST03 (Implementation Convention Reference) for 999 replies is now set to 005010X231A1 instead of the Implementation Guide of the original document
• IK502 (Implementation Transaction Set Syntax Error Code) is now set only if there is an error code
• AK905 (Functional Group Syntax Error Code) is now set only if there is an error code

This change also moves the X12 Business Service setting 'LocalApplicationID' into the Acknowledgement section to make it more visible, and changes the initial expression to '@:@' because this is much more likely to yield the desired results.

Setting LocalApplicationID to '@:@' results in using the original Document's ISA07 (Interchange ID Qualifier) and ISA08 (Interchange Receiver ID) as the values for the reply Document's ISA05 (Interchange ID Qualifier) and ISA06 (Interchange Sender ID).

DP-9292: Changes in display of host status

Category: Interoperability
Platforms: All
Version: 2019.4.0

The meaning of the running status display in the Production Configuration page has changed because the changes to support source control for productions has involved a slightly different possible state. The status in the production configuration diagram for items that are enabled but not running, either because the item has a schedule and is currently stopped or if the item has been temporarily stopped, has changed. These items now have the status stopped which means that the item dot is shown light green as per the existing legend: Not running, enabled.

Therefore 'Not running' can apply if the production is stopped or if the item is not running but the production is running.

DP-9515: HL7 parser event log warning replaced by TraceCat entry when segment name pattern unexpected

Category: Interoperability
Platforms: All
Version: 2019.4.0

With this change, in order to see information about unexpected HL7 segment names, you must now set ^Ens.Debug("TraceCat","parse") to 1. Previously, the HL7 Parser would create an event log warning for unexpected HL7 segment names.

Note validation of the message is not affected.

DP-9767: Changes for existing applications that will use dynamic gateway in place of legacy gateway

Category: Interoperability
Platforms: All
Version: 2020.1.0

This change allows existing applications that use the legacy gateway to switch to the new Dynamic Gateway by regenerating the proxy classes. Proxy classes generated with this new style are called Recast Gateway. Proxy classes generated with the old style are now called Legacy Gateway.

To generate Recast Gateway proxy classes for a specific namespace, set the following global:

set ^%SYS("Gateway","Remote","Recast",namespace)=1

Or to generate Recast Gateway proxy classes for all namespaces, set the following global:

set ^%SYS("Gateway","Remote","Recast")=1

Then re-import all the proxy classes. The first global governs Recast behavior for one namespace only while the second global governs Recast behavior for all namespaces that don't have their own setting. The import utility will automatically mark all the no-recast generated classes as out-of-date and re-import all the classes in the inheritance hierarchy.

All of the proxy classes have to be regenerated together. The Recast Gateway proxy classes cannot be mixed with Legacy Gateway proxy classes.

The Recast Gateway generated proxy classes have the same generated interface as the Legacy Gateway proxy classes. Runtime behavior is compatible. The only known differences are in the area of fixing erroneous behaviors in Legacy Gateway, Dynamic Gateway enhancements, and in handling of runtime type mismatches. The following are the runtime differences:

• Difference in dispatching overloaded method of the same argument count. Recast Gateway uses a new method overloading resolution algorithm that's in Dynamic Gateway. The detailed behavior is:
  • In Dynamic Gateway, when dispatching a method, first look for the method under the number of runtime parameters. If the number of methods found is unique, gateway has found thetarget.
  • If there are more than one method that match the runtime parameter count, then disambiguate further on parameter types.
  • Only use the $list type for runtime type. don't use runtime values.
  • $list only gives three primitive types, STRING ($list type 01, 02), INTEGER ($list type 04, 05) and DOUBLE ($list type 06, 07, 08) , plus OREF ($list type 25, 26) type.
  • Divide all Java/.NET primitive types (and their boxed types) into 3 type families based on $list types.
  • Check to see if each actual type is a match for the corresponding formal type.
  • In this check, an actual type can match more than one formal type. For example, runtime type INTEGER is a match for formal type short, int, long or boolean.
  • At the end of the process, if there is only one method left that matches with all actual types, then the search is successful. If none is left, search has failed to find an overloaded method. If more than one is left, then there is an unresolvable ambiguity.
  • Same algorithm applies to constructors.
  • Currently, when overloading is not involved, ignore runtime types. Just convert parameters (of any actual type) to their corresponding formal type. In order to have a consistent behavior, logic says, if a particular formal parameter has no type variations, then the actual type check is skipped. In another word, only use actual type to disambiguate if there is any ambiguity to begin with, and this applies on each parameter independently.
  • Any missing or undefined parameter (which results in UNDEFINED in $list) is a match for any formal type.
  • Non-primitive formal types are matched to actual parameter objects (OREF type in $list) using "instanceof" check.
  • At runtime, users can coerce a parameter's $list type in order to influence overloading resolution. Usually, a straight-up literal has the $list type of what it appears, for example m("ABC") is a STRING type, m(123) is an INTEGER type and m(3.14) is a DOUBLE type. To force a particular type on a variable with unknown type, do the following:
    1. m(x_"") forces the parameter to be a STRING.
    2. forces the parameter to be an INTEGER.
    3. m($double(x)) forces the parameter to be a DOUBLE.
  Note, this algorithm is different from how Legacy Gateway works. Legacy Gateway parses the actual value of the parameters in order to guess the runtime type. This guessing is inherently inaccurate. Sometimes, Legacy Gateway failed to dispatch because the guess is wrong, other times, Legacy Gateway dispatches successfully even when clear ambiguities exist.

• Difference in support for pass-by-reference. Recast Gateway uses pass-by-reference support implemented in Dynamic Gateway, which makes it somewhat different from the limited support of pass-by-reference in Legacy Gateway.

  Pass-by-reference works in the Dynamic Gateway and recast Gateway as follows:

  • C# method declares method parameter pass-by-reference with "ref" or "out" keywords
  • At runtime, InterSystems IRIS user calls the corresponding proxy method with .variable syntax (pass-by-reference syntax)
  • Modified values of the C# pass-by-reference parameters will be sent back to InterSystems IRIS and assigned into user's pass-by-reference variable.
  • This is only in .NET as Java doesn't support pass-by-reference.
  • This works for primitive datatypes as well we objects.
  • When the parameter is an object, this support is for "pass-by-reference" in .NET per se, which means when the parameter variable is assigned a new object, that new assignment is passed back to InterSystems IRIS variable.
  The different behavior in the Legacy Gateway is:
  • Legacy pass-by-reference doesn't support datatypes - objects only.
  • Legacy pass-by-reference doesn't support "ref" keyword - "out" keyword only.
  • Legacy pass-by-reference doesn't require .variable syntax
  • At runtime, Legacy pass-by-reference variable must not be null OREF.
  • Callee code cannot change the pass-by-reference parameter to a different type - i.e. cannot change to an object of a subclass.
  With all the difference described above, what works the same is the basic simple case. For example, variable x is a proxy of a Person object in .NET, say with firstName equals to "Isabella". Then call a method in .NET that declares this parameter with "out" keyword and the method changes the parameter assignment to a new Person object with firstName equals to "Mia". InterSystems IRIS user calls the method with (.x), and after the call, x.firstName will equal to "Mia".

  But these gateway work very differently internally. After a pass-by-reference parameter is changed, instead of sending the modified value back to InterSystems IRIS, Legacy Gateway simply changes the oref-registry. This implementation has some unexpected side-effects: Using the above example, if we set y=x before the call. After calling m(.x), not only x.firstName is changed, y.firstName is also changed to "Mia". This side-effect is highly undesirable. Fixing the behavior of this side-effect in Recast is one of difference in behavior.

• Constructor with array arguments are not working properly in Legacy Gateway. It is working properly in Recast Gateway, together with updating array contents just like any other methods.
• Properties with underscore in the name as prefix or suffix are not working properly in Legacy Gateway. It is working properly in Recast Gateway.
• Methods with varargs work mostly the same. In Legacy Gateway, overloaded method with varargs do not work properly. Recast Gateway works properly on all vararg and overload combinations.
• Array of Objects do not work properly in Legacy Gateway, It works properly in Recast Gateway.
• Recast Gateway is more dynamic. In most cases, modification to Java code doesn't require the proxy classes to be regenerated. For example, after generating Recast proxy classes, user can modify the Java class to add methods or change signature of Java methods. The existing Recast proxy classes will work with the new Java classes without being regenerated. In fact, most of the generated methods in Recast Gateway proxy class don't need to be there at all. The proxy class works just fine without them. The methods are there mostly for documentation purposes, as Legacy Gateway users are used to looking at the proxy class to see which methods are there.
• Recast Gateway supports Reverse Proxy which comes with Dynamic Gateway. In Recast Gateway, InterSystems IRIS objects passed to Java/.NET methods will arrive as objects of IRISObject which are reverse proxy objects on which users can access properties and methods on the InterSystems IRIS side. In Legacy Gateway, InterSystems IRIS objects arrive in Java/.NET, sometimes as Strings, ometimes as null, but overall, was not a supported behavior.

DPP-847: Removal of deprecated Java Business Hosts -- use PEX instead

Category: Interoperability
Platforms: All
Version: 2020.4.0

This change removes Java Business Hosts, a feature that was deprecated in release 2019.3. PEX replaces the Java Business Hosts feature. For information on migrating existing Java Business Hosts productions to use PEX, see the community article Migrate from Java Business Host to PEX. For a description of PEX, see PEX: Developing Productions with Java and .NET.

DP-11994+PLUS: API Cleanup

Category: JDBC
Platforms: All
Version: 2020.3.0

Typically, developers use the standard JDBC APIs, which are unchanged in this release, but some proprietary public classes and methods have moved or become more restricted in access permissions. These accessible proprietary classes and methods may have been used by customers in their applications, and will need to be updated.

For example, if your code is accessing directly the members of the ConnectionParameters class, you must update your code and use the getter and setter methods.

DP-12762: Newly supported connection pooling for JDBC

Category: JDBC
Platforms: All
Version: 2020.4.0

Before this change, connection pooling was not a supported feature. This change a major revision to the connection pooling code and API, and this feature is now fully supported. If your code called the previous unsupported version, you should update it to ensure that it reflects the revised implementation.

DP-13164: Change to IRISCallableStatement.getBytes(String)

Category: JDBC
Platforms: All
Version: 2020.4.0

To improve consistency between IRISCallableStatement.getBytes(String) and IRISCallableStatement.getBytes(Int), the behavior has changes. If you are calling IRISCallableStatement.getBytes(parameterName) and depend on the details of the previous behavior, you should replace the method call with a call to outputParameterList.getByteArray(parameters.getListOffset(parameterName)).

DP-13515: If compact double is enabled, all clients must support it

Category: JDBC
Platforms: All
Version: 2021.2.0

Users who enable the Compact Double feature will need to ensure that all clients, such as xDBC and Native, have been upgraded to a version that supports Compact Double; otherwise they will fail to connect. Users who do not enable Compact Double will not be affected. In previous releases, the Compact Double Feature was not available. If you do not enable it, you will be able to connect with all clients that you could in the previous version, but if you do enable it, you may not be able to connect with some of these clients.

DP-286960+DP-291907: SQL.JDBC delete row removes from client and corrects cursor

Category: JDBC
Platforms: All
Version: 2019.1.0

In previous releases, if a row was deleted from updateble ResultSet, it would not be consistently deleted from the client. In this release, the deleted row will be deleted from the client. If your code depended on the previous behavior and assumes that the row would not be deleted, you should update your code. This release also ensures that cursor movements take into account deleted rows so that the client row index matches the server persistent Row ID.

DP-290054: SQL.JDBC may use fast insert for SQLType storage

Category: JDBC
Platforms: All
Version: 2019.1.0

In this release, fast insert is enabled by default if the platform supports it. Using fast insert with the SQLType storage of literal values should not have any compatibility impact for most users.

You can explicitly disable fast insert by setting the ConnectionOption property to 1 or 0, as shown in the following example:

  Class.forName("com.intersystems.jdbc.IRISDriver");
  IRISDriver driver = (IRISDriver) Class.forName("com.intersystems.jdbc.IRISDriver").newInstance();
  String url="jdbc:IRIS://localhost:1972/user/";
  Properties p = new Properties();
  p.setProperty("FeatureOption", "0");
   /* 0 disables fast insert and delete,
      1 enables fast delete but  disables fast insert, 
      2 enables fast Insert but disables fast delete,  
      3 enables both fast insert and fast delete */
  p.setProperty("user", "_SYSTEM");
  p.setProperty("password", "SYS");
  Connection c=driver.connect(url, p);

DP-291669: SQL.JDBC throws error for illegal date/time values

Category: JDBC
Platforms: All
Version: 2019.1.0

The JDBC 4.1 standard does not allow Set/Get Date to Time and Time to Date columns. Although the previous release of InterSystems IRIS server correctly produced an exception on the set, it did not produce an exception on the get, and the client did not validate either. This release validates both get and set and throws an exception 17004 "Invalid column type". If your code explicitly tests for the "Field validation failed" exception text that was formerly returned for the set or relies on the get to not generate an exception and return a dummy value, you should update your code.

DPP-367: Need new drivers for new SQL syntax features

Category: JDBC
Platforms: All
Version: 2021.2.0

Although existing SQL code will continue to work with the previous JDBC and ODBC drivers, if you want to use the new SQL syntax features, such as SQL LOAD, you'll need to update your JDBC or ODBC driver to the one provided with this release. Some applications, such as DBeaver, come with an InterSystems IRIS driver included, but you can still point it to a newer version of the library if you want.

DP-413465: Return meaningful error from ##class(%SYS.Journal.History).GetHeader()

Category: Journaling
Platforms: All
Version: 2022.2.0

In the case where the journal log contains no or bad version info, ##class(%SYS.Journal.History).GetHeader() (and its direct or indirect callers such as ##class(Journal.Restore).CheckJournalIntegrity()) now returns a meaningful error such as "Journal log <path> missing version", which is also compatible with the existing $System.Status facility. The old return value in this case, "0v", is obscure in meanings and incompatible with the existing $System.Status facility.

DP-426382: Ensure proper behavior of ExternalFreeze w.r.t. Write Daemon suspension

Category: Journaling
Platforms: All
Version: 2024.1.0

This change causes two methods to throw errors that they previously did not.

The ExternalFreeze() method now returns the error "ERROR #7338: System is already suspended" if the system is suspended with no request to suspend for over 10 seconds. Previously, ExternalFreeze() simply returned success in this case.

The ExternalThaw() method now returns the error "ERROR #7339: System is not suspended" if the system is not suspended and there is no request to suspend it. Previously, ExternalThaw() simply returned success in this case.

DP-9521+DP-287295+DP-292255: Changes for dejournaling

Category: Journaling
Platforms: All
Version: 2019.4.0

There are several dejournaling changes, which have some impact on system administration:

• On systems configured with a database cache larger than 128GB, a dejournaling task (which applies database updates in the journal to databases during a journal restore or when the backup failover member of a mirror is synchronized with the primary) may employ more updater processes than in previous versions, and therefore use more system resources. If your instance is close to resource limits, this may cause problems.
• Previous versions of Caché or InterSystems IRIS allowed fewer databases to be mounted at one time than the current version. Any journal files created after an instance has passed the old limit are therefore incompatible with previous versions of Caché or InterSystems IRIS. For example, they could not be used to run a journal restore after restoring databases from backup to an instance of a previous version. However, journal files created by previous versions are compatible with this version.
• Parallel Dejournaling has been enhanced to allow multiple jobs to process separate globals within a single database rather than being restricted to processing only separate databases in parallel. This affects the ordering of updates that can be seen when dejournaling has been started but not yet completed. For details, see Restore Globals From Journal Files Using ^JRNRESTO in the description of Data Integrity Journaling and Configuring Parallel Dejournaling in the description of Configuring Mirroring for high availability.

DP-410199: ##class(%DynamicAbstractObject).%FromJSON("") returns "" instead of an error

Category: JSON
Platforms: All
Version: 2022.2.0

A call on ##class(%DynamicAbstractObject).%FromJSON("") will return the empty string, "", instead of throwing an exception for "Premature end of data".   However, %FromJSON(arg) will still throw that error if (1) arg is a %Stream containing no additional characters; if (2) arg is a file name referencing a %File that contains no characters; or if (3) arg is an ObjectScript string containing only white space characters or is otherwise an incomplete JSON string.

Note:  a call on DynamicObject.%ToJSON() that does not signal an error will always return an ObjectScript string containing at least two characters, e.g., [] or {}.

Any code expecting %FromJSON("") to throw an error will need to be modified to special check for "" being passed as an argument to %FromJSON(arg).

DP-10339: Add protection check to modify the keep flag or growth block of a global

Category: Kernel
Platforms: All
Version: 2020.1.0

This change requires write access in order to modify the keep flag or growth block of a global. If your code attempts to modify these characteristics without write access, it will fail with a <PROTECT> error.

DP-10904: Journaling files may be compressed

Category: Kernel
Platforms: All
Version: 2021.2.0

The system can now automatically compress journal files after they are created to reduce the amount of space consumed by older journal files. Compressed files have a 'z' appended to their name. Any code which scans for journal files by name needs to be updated to cater for this change (if compression is enabled).

The size column in the %SYS.Journal.ByTimeReverseOrder query is the size on disk. Previously the size on disk and the amount of journal data in a file were more or less the same but with compressed files this is no longer the case. $$$GetJrnDataSize(%jrnfile) in %syJrninc.inc will return the amount of journal data in a file (from the journal file header) regardless of whether a file is compressed or not.

Compression is enabled by default during an upgrade from a version which did not support it.

DP-12215: GLOSTAT changes

Category: Kernel
Platforms: All
Version: 2020.3.0

As part of a project to improve the performance of counters, certain GLOSTAT statistics have been changed:

• %SYS.ProcessQuery property 'DataBlockWrites' and the equivalent $zu(67,38,pid) now counts any database block queued for writing by this process, whereas it previously counted only blocks internally typed as data blocks. This more accurately reflects the write load induced by this process than before (without adding the unnecessary complication of an additional statistic).
• The undocumented $zu(190,6,0) and $zu(190,6,7) functions to zero system statistics are removed and now throw <FUNCTION>.
• The iris stat -p32 columns formerly labelled 'rfcnt' and 'bfhit' are now labelled 'phyrd' and 'wdqbk' and they reflect, for the process in that row, the number of database reads and database blocks queued for writing respectively.

DP-12307: Asynchronous I/O for database writes on Linux and UNIX®

Category: Kernel
Platforms: UNIX®
Version: 2020.3.0

With this change, the product on Linux uses asynchronous I/O for writes to database files, as it always has on all UNIX® and Windows platforms. This is coupled with automatic use of direct I/O instead of buffered I/O. This change optimizes the disk I/O characteristics for database files, allowing higher scaling on busy systems without compromising application responsiveness. Of course, synchronization still occurs at key points to guarantee data integrity.

This change may require attention in certain configurations as file system buffering may have allowed the product to perform acceptably with an under-configured database cache in previous versions. Check that database cache is sized appropriately on your system.

Additionally, the product on Linux and all UNIX® platforms now uses asynchronous I/O for writing to the write image journal to provide optimal I/O characteristics. This change, however, requires no special attention.

For details, see Buffered I/O vs. Direct I/O.

DP-12577: Memory usage changes for global and routine buffers

Category: Kernel
Platforms: UNIX®,macOS
Version: 2020.3.0

This change improves performance on newly installed systems where the database cache size has not been configured. Under most circumstances, you should carefully configure cache sizes and plan your memory management for optimal system performance. Configuring cache sizes is especially important for live production systems, systems with heavy loads, and systems with multiple instances.

However, when users initially evaluate the product, they typically run it without configuring the database cache size. The new behavior in allocating memory on systems where cache size has not been configured is:

See Memory Management and Scaling for InterSystems IRIS for more information about memory management.

DP-13047: Support FIPS mode for libcrypto.so.1.1 in Red Hat Linux 8.2

Category: Kernel
Platforms: Linux
Versions: 2020.1.1, 2020.3.0

On Red Hat Linux, you can only use libcrypto.so.1.1 FIPS mode on Red Hat Linux version 8.2 and later. You cannot use this mode on earlier versions.

DP-13055: %ETN could change null subscript setting

Category: Kernel
Platforms: All
Version: 2020.3.0

In this release, the $ZREFERENCE variable, which contains the last global referenced, can have a different value after running %ETN error trap utility than it had in the same context in previous releases. If your code is parsing the $ZREFERENCE value to determine where the error information was written, you must modify your code to determine this information using the return value from LOG^%ETN or BACK^%ETN, which is a $LIST of the first two subscripts in the ^ERRORS global.

DP-13195: Remove extern symbol zfedll from include files

Category: Kernel
Platforms: UNIX®
Version: 2020.4.0

There may be an unexpected incompatibility with any DLL that contains a source file that includes any of the following 4 statements:

#include iris-cdzf.h
#include iris-callin.h
#include cdzf.h
#include callin.h

DP-13424: Cannot connect with ECP to older releases by default

Category: Kernel
Platforms: All
Version: 2021.2.0

By default, this release may compress compiled routines to improve efficiency. These compiled routines cannot be handled by previous releases of the product. Consequently, it will not allow ECP connections to instances that don't support this feature; specifically, if you attempt to connect to older instances, the result will be an error.

You may disable this compression feature system-wide with $ZU(69,87,1). If you disable this feature, then this release will be able to connect through ECP with older releases.

DP-13552: Handle string values in $SYSTEM.Event.Wait()

Category: Kernel
Platforms: All
Version: 2020.4.0

In previous releases, a $SYSTEM.Event.Wait() with a string value would cause no timeout. With this change, the string is converted to an integer and that is used as the timeout value. If the string is a nonnumeric string, it is treated as a zero timeout.

DP-13698: Changes to TCP TLS in FIPSMode

Category: Kernel
Platforms: All
Versions: 2020.1.1, 2020.4.0

When FIPS mode is enabled, TCP TLS will use operating system's libraries and the TLS1.1 and earlier protocols won't be supported. This change should not impact existing code but, if your existing TCP TLS code uses FIPSMode, you should test it to ensure that there are no subtle behavior changes.

DP-13931: Minor write daemon changes

Category: Kernel
Platforms: UNIX®
Version: 2021.1.0

These are minor changes unlikely to impact code. In the %SYS.ProcessQuery, $SYSTEM.Process, SYS.Process classes, the property Routine has the value "AUXWD" rather than "SWRTDMN" for the auxiliary write daemons. For the property JobType, which is documented as taking a value from %syPidtab.inc, the definition in that include file is renamed from $$$SLWDTYPE to $$$AUXWDTYPE, and the numeric value is unchanged. In UNIX® systems, process names are changed from SWD1, SWD2, ... to AUXWD1, AUXWD2,...

DP-20621: ^JCONVERT changes

Category: Kernel
Platforms: All
Version: 2021.1.0

^JCONVERT now creates and processes common journal files in the enhanced format, which supports long strings. It has a new prompt to control whether common journal files are created in the enhanced format or in the previous format. If you need to create common journal files that can be read by ^%JREAD or ^JCONVERT from a previous version, you must specify that you do not want the enhanced format.

DP-275329: Task termination change

Category: Kernel
Platforms: All
Version: 2021.1.0

In previous releases, tasks that were terminated by shutdown were marked as suspended. With this change, they are not marked as suspended by default. If you want tasks terminated by shutdown to be marked as suspended, set the new SuspendTerminated property.

DP-290643: System statistics revisions for better scalabililty

Category: Kernel
Platforms: All
Version: 2019.1.0

To improve performance of large-scale systems, the statistics reported by the system utilities have changed. In most cases this will not cause any compatibility issues; however, if your code explicitly examines the statistics output for specific data, you may have to update your code to adjust for these changes. The following minor changes are visible:

• The ^GLOSTAT utility no longer offers detailed block type statistics and no longer asks the question "Should detailed statistics be displayed for each block type? No =>". Additionally a bug is corrected in ^GLOSTAT that caused remote reads and remote cache efficiency to be incorrect (usually zero).
• The Management Portal System Dashboard is enhanced to show private global references and updates and WIJ writes, in the same way that ^GLOSTAT does. The detailed block type statistics page, 'Disk and Buffer Statistics', is no longer available.
• The ability to zero statistics (from ^GLOSTAT and the Management Portal) is not available. This capability is not compatible with the more efficient statistics collection.
• The class SYS.Stats.Disk, which accesses the detailed block type statistics, reports all as zero; the class reference is updated to reflect this. The class SYS.Stats.Global, which accesses the main global statistics, continues to function as before and is enhanced to include write image journal writes as a property called 'WIJWrites'. Additionally, the internal class SYS.Metrics was previously exposed (unintentionally) as a public API; it is now properly marked as internal-only and it no longer reports values for detailed block type statistics.
• The WS-Monitoring and BMC Patrol facilities that report the detailed block type statistics, report them zero or null. BMC Patrol, WMI, and SNMP monitoring facilities lock counts (total, success, and fail) also report as zero.
• The iris stat -g1 is updated to include more fields that were previously only available in ^GLOSTAT displays. Some statistics that were available via the iris stat -c option are no longer available.

Note:%Monitor.Process, MONLBL, PERFMON and similar performance monitoring tools are unaffected by this change and maintain their own counters.

DP-401740: (Windows) Greater precision in $ZNOW and $ZTIMESTAMP

Category: Kernel
Platforms: Windows
Version: 2021.2.0

With this change, on Windows, $ZNOW and $ZTIMESTAMP have more digits of precision than in previous releases.

Also, previous releases included the special functions $ZU(136,21,0), $ZU(136,21,1), and $ZU(136,21) for use on Windows, to work around limitations in how Windows returned time values. Windows now returns more accurate time values and these functions are not needed. If you call these functions, you must update your code.

DP-401894: Improve storage efficiency by performing kills in ascending order

Category: Kernel
Platforms: All
Version: 2021.1.0

This change increases the storage efficiency of the database following a KILL command — especially when purging large quantities of data from a database in ascending order. In the past programmers sometimes did KILLs in descending order when doing large purges of data. To improve storage efficiency, you should change such programs to do kills in ascending order as doing kills in ascending order will now almost always result in better efficiency and better performance. There should be less need to run the GCOMPACT utility to improve storage efficiency following large purges of data.

This change does cause a 128 byte increase in the shared memory allocation per global buffer. If you are using the 8k default buffer size, this is a 1.5% increase.

DP-404334: Quote $ZF() shell commands on Windows

Category: Kernel
Platforms: Windows
Versions: 2021.1.1, 2021.2.0

Windows shell commands must be enclosed in quotes if there are quoted arguments along with a quoted command path. Those quotes will now be added by $ZF(-1), $ZF(-2), and $ZF(-100,"SHELL").

DP-405025: Changes to rounding of ObjectScript decimal floating-point values

Category: Kernel
Platforms: All
Version: 2021.2.0

This release contains a slight improvement in rounding of ObjectScript decimal floating-point. One specific value of the IEEE floating point significand:

-9223372036854775808

-9223372036854775810

This error does not involve IEEE ($DOUBLE) binary floating-point representation. It only involves ObjectScript decimal floating-point representation.

Certain computations using a decimal significand of -2**63 (or -9223372036854775808), especially multiplications by a power of 10, were incorrectly rounded up to -9223372036854775810 when -9223372036854775808 is the exact answer. This has been fixed. Note that the positive valued significand of +9223372036854775808 does not exist so it is always rounded up to 9223372036854775810. This means that -(9223372036854775808) does not equal -9223372036854775808 because the first expression is rounded up before the negation operator is applied.

DP-406134: Change to error signalled by dynamic objects and arrays

Category: Kernel
Platforms: All
Version: 2021.2.0

ObjectScript programs that used to catch <PROPERTY DOES NOT EXIST> error when $GET/$DATA was applied to a %DynamicObject or %DynamicArray element must now instead catch the <ILLEGAL CLASS> error. Since $GET/$DATA always signals an error when applied to existent or nonexistent Dynamic Object elements, it is unlikely that there are any programs that are deliberately generating this error signal and testing for it.

DP-407539: Improvements to purging backup logs

Category: Kernel
Platforms: All
Version: 2022.1.0

In previous releases, only backup logs within the file named "idpbackup.log" (created by running ^BACKUP from terminal) were being purged by the PurgeBackupLog task, and log files generated by running backups from the Management Portal were never purged. This change makes the handling of these logs consistent: purging purges both kinds of logs. In addition, this changes the default number of days to purge logs from 7 to 30.

Changes affecting the different entry points for running backups are as follows:

• Backups run from Management Portal: Backup logs will be created and named the same as they were before (according to the name of the task being run), but they will now be purged by the PurgeBackupLog task (before, they were never purged).
• Backups run from Terminal (^BACKUP): Rather than appending each backup log into the same idpbackup.log file, each backup run will generate a new idpbackup_date_counter.log file. The PurgeBackupLog task will then delete these files individually rather than scanning and trimming the contents of the idpbackup.log file.
• Backups run externally ($$BACKUP^DBACK()): The backup log file specified by the user in the arguments will be created newly or overwritten (rather than appending to it); if there is no file specified, the backup will generate a new idpbackup_date_counter.log file as for TUI backups. The PurgeBackupLog task will work as for TUI backups.

DP-408501: Replace random number generator algorithm in $Random with Splitmix64

Category: Kernel
Platforms: All
Version: 2022.1.0

Before this change, $random used a pseudo random number generator algorithm. With this change, we replace it with Splitmix64, a fast pseudo random number generator algorithm that can pass rigorous statistical tests of its randomness.

In most cases, this does not impact compatibility, but if your application uses $zu(165) to specify a seed and relies on an expected sequence of random numbers, you will have to update your code with the new sequence. For example, the %Populate utilities will produce different results than prior versions with the same seed.

DP-409100: Run object destructors when a .Net application quits

Category: Kernel
Platforms: All
Version: 2022.1.0

Actions performed by an object's %OnClose method, such as unlocking a record in a persistent class, were not being performed in a timely manner for a client/server application using .Net, JDBC, etc.

DP-409401: Increase maximum local array subscript length from 511 to 32767

Category: Kernel
Platforms: All
Version: 2022.2.0

The maximum length of a local variable subscript is increased from 511 encoded bytes to 32767 (the limits are described in detail in the documentation). Attempting to set such a subscript on a prior version would fail with a error.

The maximum length of a global subscript is unchanged at 511 encoded bytes, so when using arbitrarily long subscripts on local variables, it is easier than it was in prior versions to generate a local variable that cannot be merged into a global -- the MERGE command would stop with a error upon encountering such a subscript. Note: this condition was possible in prior versions because differences in local and global encoding rules can result in a differing number of encoded bytes when an identical string is used as either a local or global.

DP-409851: Change to viewing private program data on AIX

Category: Kernel
Platforms: AIX
Version: 2021.2.0

With this change, on AIX, you will receive a <PROTECT> error when you attempt to view private program data that is outside of the instance's partition. You can get this error from the $VIEW function or the VIEW command. You can enable viewing and avoid the error by calling $ZU(69,23,1).

InterSystems strongly discourages users from using the $ZU(69,23,1) feature. This feature leaves Open M/SQL-UNIX open to abnormal termination of M processes and hangs due to programming errors.

DP-410050: Correct a rare bug on class initialization

Category: Kernel
Platforms: All
Version: 2022.1.0

This change corrects a very rare bug that could cause the wrong version of a class to be loaded into memory. This could lead to increased memory usage if class components are not being used. Otherwise, it only changes the time at which they are loaded into memory.

DP-410087: Change in error when dynamic dispatch is not implemented

Category: Kernel
Platforms: All
Version: 2022.1.0

If a class does not implement dynamic dispatch and a method whose name ends with Get or Set is called and the method does not exist, the error is now <METHOD DOES NOT EXIST> instead of <PROPERTY DOES NOT EXIST>.

DP-410225: Add more fields for audit log entry in structured logging

Category: Kernel
Platforms: All
Version: 2022.2.0

Before this change, when the LOGDMN process scanned the audit log, it persisted only the following audit event fields to the log file: EventSource,EventType,GroupName,Namespace

With this change, the LOGDMN process 1) includes all the fields as seen in the details of ^SECURITY for an audit log record and 2) improves audit log scanning process to one pass for better performance.

Log entry parsing, parameter matching, and value extraction might break if your code relies on the previous behavior.

DP-411644: Improve SplitSize^%GSIZE() to more evenly split on SLM mapped global

Category: Kernel
Platforms: All
Version: 2022.2.0

Improve SplitSize^%GSIZE() to more evenly split on subscript-level mapped global.

For a global mapped to remote database through ECP, the data server needs to have this new feature in order to process the request from app server with this new feature.

DP-412202: Changes to $zversion String and GetPlatform() for Linux

Category: Kernel
Platforms: Linux
Version: 2022.1.0

The $zv string will now include the Linux distribution version. If your code parses this string, you may have to modify it to handle this change. This string is also returned by the GetPlatform() method of %SYSTEM.Version class.

DP-413544: Change ZBREAK so %Destruct stepping is ON by default

Category: Kernel
Platforms: All
Version: 2022.2.0

When debug stepping is enabled and an object reference is closed, the debugger will now step into the %Destruct and %OnClose methods. Previously this stepping was disabled by default. This stepping may be turned off with the command ZBREAK /NOSTEP:DESTRUCT.

DP-417351: Change internal repressention of JSON literals; require recompile

Category: Kernel
Platforms: All
Version: 2024.1.0

This change modifies the internal representation of JSON literals.

ObjectScript routines/methods compiled before InterSystems IRIS 2022.1 and using numeric values in JSON constructors must either be recompiled in the more up-to-date InterSystems IRIS version or must be executed on an InterSystems IRIS version that includes this change.

DP-6736: Maximum frame depth reduced on 32-bit Unicode

Category: Kernel
Platforms: UNIX®
Versions: 2019.1.1, 2019.2.0

This change fixes a problem caused if a second <FRAMESTACK> error is encountered when TRY/CATCH catches a <FRAMESTACK> and tries to create the error object. This condition lead to the process terminating. This was an issue only on non-Windows 32-bit Unicode platforms.

This change is unlikely to cause problems unless your code created conditions that were very close to the previously allowed frame depth.

This was an issue only on non-Windows 32-bit Unicode platforms.

DP-417320: Enforce SOAP/REST licensing

Category: Licensing
Platforms: All
Version: 2024.1.0

In previous versions, the product did not enforce the SOAP/REST licensing rules.

With this version, we are now enforcing those licensing rules. Each authenticated request will be licensed as a concurrent user (with multiple connections allowed) only when providing both SOAP and REST services. Unauthenticated requests (i.e. $Username = "UnknownUser") will be counted as independent user connections and subject to a 10-second minimum connection time.

DP-427878: disable TRAP_LICENSE SNMP trap for MONITOR

Category: Licensing
Platforms: All
Version: 2024.1.0

This change removes "license request exceeded available allocation" messages generated by various license failues, which were largley duplicates of the "license limit exceeded" messages.

DP-401580: New External Language Servers page replaces gateway pages

Category: Management Portal
Platforms: All
Version: 2021.1.0

In the management portal, the new External Language Servers page replaces the following pages:

• Object Gateways
• JDBC Gateways
• XSLT Gateways

To access the new page, click System Administration > Configuration > Connectivity > External Language Servers. For details on the new page, see Managing External Server Connections.

MIRMONTASK-2021: Removal of Mirror Monitor Launch Task

Category: Management Portal
Platforms: All
Version: 2021.1.0

In the Task Manager, the Mirror Monitor Launch Task task has been removed. This task is applicable only for HealthShare installations and is not needed for InterSystems IRIS for Health.

HSIEO-3382: Require HS_Services to be enabled on mirror members

Category: Mirroring
Platforms: All
Version: 2024.1.0

This change requires that HS_Services username is enabled on each mirror member.   Note that typically the HS_Services user is not enabled on an IRIS for Health / HealthConnect instance.

DP-13951: New metrics in %Monitor.Process

Category: Monitoring
Platforms: All
Version: 2021.1.0

This change adds new metrics from %Monitor.Process, and the counter index numbers have changed. The new metrics are MONBLKWAIT, MONBLKWAKE, MONMEMALLOC, and MONMEMFREE.

DP-291587: Remove WMI and Patrol monitoring

Category: Monitoring
Platforms: All
Version: 2019.1.0

This change removes support for using the BMC Patrol monitoring tool and the Windows Management Integration (WMI) monitoring.

DP-405941: %Monitor.Process now uses same metric names as ^PERFMON and &MONLBL

Category: Monitoring
Platforms: All
Version: 2021.2.0

Modified %Monitor.Process to use the same list of metric names that the ^PERFMON and ^MONLBL routines use. If your code identifies metrics by name, you should modify it to use the new set of names.

DP-412620: Reduce memory contention in ^PERFMON and add options

Category: Monitoring
Platforms: All
Version: 2024.1.0

This change reduces overhead of using ^PERFMON on larger systems. It also adds options to memory usage to reduce contention:

• Use multiple 'tables' for the Global, Routine, and Database tables. This should help with general counter 'contention' issues on a very busy system.
• Disable counting of MONLINES. Addresses a specific contention issue for this counter which can get updated a lot for routines.
• Disable counting of 'other' slot for the Process table. This reduces contention when all Process slots are full and new Processes would all get assigned to 'other'.

Internally, the recording of stats is now automatically distributed among multiple tables, and then the reporting of the stats aggregates the multiple tables. This change can use a lot more shared memory now, so there is a prompt to the regular ^PERFMON startup that shows you how much of gmheap would be used, and asks if you want to continue. 

There are options to disable the counting of MONLINES (aka RtnLine) in the PERFMON startup, the $$Start^PERFMON API, and the class API in %Monitor.Manager.

Also added parameters to $$Collect^PERFMON() for routines and globals so that you can collect for larger numbers of routines/globals. Modified defaults for table sizes to be consistent.

DP-413960: Limit PERFMON collection (index) numbers

Category: Monitoring
Platforms: All
Versions: 2022.1.2, 2022.2.0

Limit all PERFMON collections to 64k. Before this change, use of collections >65535 would silently fail; now an error is returned.

DP-13514: Replace legacy terminology

Category: NLP
Platforms: All
Version: 2020.4.0

This release adopts new terminology replacing master/slave with head/tail and BlackLists with SkipLists. In most cases, existing API calls will continue to work though you can update to the new terminology, but, if your code is explicitly checking for specific names in column heads or class reference entries or if you are using the Web Service projections of the %iKnow query APIs, you will need to adjust your code to account for these changes.

DP-401903: Update of the Japanese language model

Category: NLP
Platforms: All
Version: 2021.1.0

For Japanese text, parentheses () and their content may get indexed differently from previous versions, depending on the use of Katakana and number of characters within. While doing so is not strictly required, users are recommended to reindex their NLP domains with Japanese text to ensure uniformity of the output.

DP-8357: Improve %FromJSON() error checking

Category: Object
Platforms: All
Version: 2022.1.0

The %FromJSON() method would accept numeric input with an illegal format (a few example arrays [0e] and [-].) In the past this very deviant numeric syntax did not generate an error. However, some illegal numeric syntax is accepted by some third party JSON decoders by making minor corrections to illegally numeric syntax. Example arrays that will be accepted and corrected by the %FromJSON(....) method are: (1) [-5.] will become [-5.0] and (2) [-.5] will become [-0.5].  Also, the maximum input length for a JSON numeric string has been increased to 1022 characters.

DP-423075: BUILD INDEX: Changes for Map Selectability

Category: Object Compiler
Platforms: All
Version: 2024.1.0

This change adds a new parameters, pKeepSelectability, to the %BuildIndices and %BuildIndicesAsync methods. See the Class Reference for more information.

It also adds support for a KEEP SELECTABILITY option to the BUILD INDEX SQL command. If this option is specified, after a successful index build, the map remains not selectable if it had been not selectable before the index build.

This is a change in the behavior of the BUILD INDEX command. When KEEP SELECTABILITY is not specified and the build is selectable, the index map is set as selectable. If you need an index map to remain not selectable aftter a successful index build, you must specify KEEP SELECTABILITY in the SQL statement.

DP-10209: JSON adapter %Status value changes

Category: Object Library
Platforms: All
Version: 2020.1.0

For some conditions the value returned in %Status has changed. Under some circumstances, where the JSON adapter previously set the %status value to the <METHOD DOES NOT EXIST> system error returned by the %JSONExport method, it now sets %status to

ERROR #9411: A class referenced by a %JSONENABLED class must be a subclass of %JSON.Adaptor"

DP-10482: Improve error handling for %File.TempFilename

Category: Object Library
Platforms: All
Version: 2020.1.0

The ##class(%File).TempFilename method now returns an empty string instead of a negative return code when there is an error. The new third argument receives the error code in case of an error. If your code is checking the return value for a negative error code, you must change it to check for an empty string and use the third argument to report the error code.

DP-20958: %Net.SMTP no longer sends email if server doesn't support authentication

Category: Object Library
Platforms: All
Version: 2021.2.0

Before this release, if you used %Net.SMTP to try to authenticate to an SMTP server that did not support authentication, %Net.SMTP would send the email. Now in the same scenario, %Net.SMTP will return the following error and will not send the email:

ERROR #6166: Server does not support authentication

Users who prefer the old behavior and want to continue the exchange unauthenticated after a failed authentication attempt can set the new IgnoreFailedAuth property of %Net.SMTP to true. Users who do not use authentication with SMTP as well as users who do not want to continue with an unauthenticated exchange if authentication fails don't need to do anything.

DP-282230: Streams locked for longer period of time

Category: Object Library
Platforms: All
Version: 2019.1.0

In this release, InterSystems IRIS locks streams earlier in the process of reading them. This ensures that the stream does not change after reading information about the stream, such as the size of the stream. This change may cause concurrency issues when multiple jobs are reading the same stream. In most cases, the stream will only be locked for a slightly longer time and this will be handled by your code that handles lock timeouts. However, if your code opens a stream and then delays before reading the stream or never reads the stream, this change can significantly increase the lockout time. This increases the chances of deadlock when multiple jobs are reading the same stream.

DP-283137: Stream clones no longer created in temporary directory

Category: Object Library
Platforms: All
Version: 2019.1.0

In this release the %FileCharacterStream %ConstructClone method creates the clone file in the same directory as the original file. In previous releases, it would incorrectly create the clone in a temporary directory. If you have code that assumes the file will be created in the temporary directory, you should update your code.

DP-285619: Change class names for storage classes

Category: Object Library
Platforms: All
Versions: 2018.1.1, 2019.1.0

When upgrading from to InterSystems IRIS, this change updates the following storage class names:

%CacheStorage -> %Storage.Persistent
%CacheSQLStorage -> %Storage.SQL
%CacheSerialState -> %Storage.Serial
%CacheShardStorage -> %Storage.Shard
%Compiler.Storage.Cache -> %Compiler.Storage.Persistent
%Compiler.Storage.CacheExtent -> %Compiler.Storage.Extent
%Compiler.Storage.CacheSerial -> %Compiler.Storage.Serial
%Compiler.Storage.CacheSQL -> %Compiler.Storage.SQL
%Compiler.Storage.Extent -> %Compiler.Storage.CustomExtent
%Compiler.Storage.Serial -> %Compiler.Storage.CustomSerial
%Compiler.Storage.Generator.Cache -> %Compiler.Storage.Generator.Persistent

Added conversion of the old to the new name in the class dictionary upgrade. This is performed automatically in %Dictionary class save, and logic for UDL import now also performs this dictionary upgrade.

The original names have been removed. If customer classes subclass these old names they should update to the new names.

DP-286395: Change in Location of temporary files

Category: Object Library
Platforms: All
Version: 2019.1.0

This release changes the way %Library.File.TempFileName() creates temporary files. Before this change, the method just returned the filename and, typically, the file would later be created in the InterSystems IRIS temporary directory. With this change, the TempFileName() method creates the temporary file on disk and uses the operating system temporary directory rather than the InterSystems IRIS temporary directory.

DP-287329: Remove server side MSM-Activate support

Category: Object Library
Platforms: All
Version: 2019.1.0

This change removes support of MSM-Activate. If your code uses MSM-Activate, it will not be able to connect to an InterSystems IRIS server. You must replace the MSM-Activate code with other code to connect to the server.

DP-290939: Unit test: Autoload resources are deleted on test termination

Category: Object Library
Platforms: All
Version: 2019.1.0

In previous releases, if multiple autoload nested directories were created for a test, not all the levels of directories would be deleted when the unit test completed. In this release all autoload resources will be deleted. If you developed code that assumed that the directories would be retained, you should update your code.

DP-291411: ReadLineIntoStream() returns different value at end

Category: Object Library
Platforms: All
Version: 2019.1.0

If you call the %Stream ReadLineIntoStream() method on a stream with AtEnd set, it now returns an empty string "" at the end. In previous releases, it returned a newly created %Stream.TmpCharacter stream that contains no characters. If your code relied on the previous behavior, you must update it.

DP-291883: Attempting to round %Integer in %xsd package now causes error

Category: Object Library
Platforms: All
Version: 2019.1.0

In previous releases, if you attempted to assign a non-integer value to an integer in the %xsd package, it would not consider it an error but would silently truncate the value to an integer. This is not the expected behavior. In this release, InterSystems IRIS treats this as an error. If your code relies on the previous behavior, you should update it to avoid this error condition.

DP-292449: In %Net.Http, GetJson() replaces getJSON()

Category: Object Library
Platforms: All
Version: 2021.2.0

In %Net.Http, the new GetJson() replaces the getJSON() method. The new method has the following signature:

classmethod GetJson(requestURL As %RawString = "", request As %String(MAXLEN="")="") 
            as %DynamicAbstractObject

DP-402085: OAuth — change to AddOct method

Category: Object Library
Platforms: All
Version: 2021.1.0

The rarely used method %OAuth2.JWKS.AddOct() no longer base64url decodes client secrets. If you make use of this method but still need to base64url decode the secrets they pass in, you should base64url decode it before calling the method.

DP-405034: %Net.SMTP checks server identities by default

Category: Object Library
Platforms: All
Versions: 2019.1.2, 2020.1.2, 2021.1.1, 2021.2.0

This change fixes a bug where the SSLCheckServerIdentity property in %Net.SMTP defaulted to false, but was documented as defaulting to true. The property now defaults to true and is in alignment with documentation. This means that, when connecting to an SSL/TLS secured web server, %Net.SMTP will check that the certificate server name matches the DNS name used to connect to the server and fail if they don't match. This is the behavior specified in RFC 2818 section 3.1.

As a result, when connecting to an SSL/TLS secured web server, the default behavior of %Net.SMTP will now be to fail if the certificate server name does not match the DNS name used to connect to the server.

This change is unlikely to cause compatibility issues, but it is possible that when using %Net.SMTP to send messages you might have issues connecting to an SSL/TLS enabled server. If this happens, and you understand the security trade-offs, you can set SSLCheckServerIdentity to 0 to restore the previous behavior.

DP-410183: Fix XML generation when a class extends another class in a different XML namespace

Category: Object Library
Platforms: All
Version: 2022.2.0

This change corrects a problem with XML generation when a class extends a class in a different XML namespace. Specifically, if a class A in namespace N1 with ELEMENTQUALIFIED=0 extends a class B in namespace N2 also with ELEMENTQUALIFIED=0, and class B contains a property of type C in namespace N2, when you generate XML for an instance of class A, previously the element for Class C would be qualified with namespace N2, when it should in fact be unqualified.

For example:

Class dp.ActualType Extends dp.n1.BaseType
{
Parameter ELEMENTQUALIFIED = 0;
Parameter NAMESPACE = "urn:sdk-test/n2";
Parameter XMLNAME = "ActualType";
Property ActualProp As %String(MAXLEN = "", XMLNAME = "ActualProp") [ Required ];
}

Class dp.n1.BaseType Extends (%RegisteredObject, %XML.Adaptor)
{
Parameter ELEMENTQUALIFIED = 0;
Parameter NAMESPACE = "urn:sdk-test/n1";
Parameter XMLNAME = "BaseType";
Parameter XMLSEQUENCE = 1;
Property BaseProp As dp.n1.BasePropType(XMLNAME = "BaseProp") [ Required ];
}

Class dp.n1.BasePropType Extends (%RegisteredObject, %XML.Adaptor)
{
Parameter ELEMENTQUALIFIED = 0;
Parameter NAMESPACE = "urn:sdk-test/n1";
Parameter XMLNAME = "BasePropType";
Parameter XMLSEQUENCE = 1;
Property Tag As %String(MAXLEN = "", XMLNAME = "Tag") [ Required ];
}

<?xml version="1.0" encoding="UTF-8"?>
<s01:ActualType xmlns:s01="urn:sdk-test/n2">
    <s02:BaseProp xmlns:s02="urn:sdk-test/n1">
        <Tag></Tag>
    </s02:BaseProp>
    <ActualProp>myvalue</ActualProp>
</s01:ActualType>

<?xml version="1.0" encoding="UTF-8"?>
<s01:ActualType xmlns:s01="urn:sdk-test/n2">
    <BaseProp xmlns:s02="urn:sdk-test/n1">
        <Tag></Tag>
    </BaseProp>
    <ActualProp>myvalue</ActualProp>
</s01:ActualType>

DP-412389: New ^mtemp format for ^%STACK; new way to extract local variable values

Category: Object Library
Platforms: All
Version: 2024.1.0

Some of the internal data formats used in a ^mtemp(%msub) stack dump and used in a ^ERRORS(date,index) stack dump have changed. See the class reference documentation of ExamStackByPid() method of the %SYS.ProcessQuery class.

Also, there is some change to output (especially output of objects) in the ^%ERN and ^%STACK displays of stack dumps. The same data is still there but the data formatting is different in some cases. This debugging display is generated interactively to the programmer who should not have problems with the modified formats.

New routines $$VGetn^%STACK(index,level,variable) and $$VGetn^%ERN(date,index,level,variable) provide a supported way to extract local variable values out of stack dumps in the ^mtemp and ^ERRORS globals. These new routines work with both the old and new format stack dumps.

DP-412418: In %RoutineMgr:StudioOpenDialog query for /mapped=0 use the data database for globals not the routine database

Category: Object Library
Platforms: All
Version: 2022.2.0

The %RoutineMgr:StudioOpenDialog query, which is used by a large number of interfaces, turns patterns into lists of items in the InterSystems IRIS system. One of the pattern extensions it supports is '.gbl' to reference globals. When you called this with for example '\*.gbl' and the qualifier /mapped=0 (which is normally the default) it would search for globals in the routine database but it should have been searching the default data database as well for globals as routines/classes are found from patterns like '\*.mac' or '\*.cls'.

With this change, the query will result in *.gbl finding globals in the data database for /mapped=0 where as before it would only find ones in the routine database. It is unlikely customers are relying on this behavior.

DP-412853: Add %FromJSONFile(); do not load files in %FromJSON()

Category: Object Library
Platforms: All
Version: 2022.2.0

Previously ##class(%DynamicAbstractObject).%FromJSON() would accept three types of inputs:

• a stream object
• a JSON formatted string
• a filename on the server containing JSON

This has been fixed by creating a new method that expects an input string containing a filename:

ClassMethod %FromJSONFile(str) As %DynamicAbstractObject

The %FromJSON() method no longer loads a file. If the input is a stream, the method works as before.

DP-402912: Fix problem where errors within ZWRITE command are not raised to caller's error trap

Category: ObjectScript
Platforms: All
Versions: 2021.1.1, 2021.2.0

This change fixes a problem where errors within ZWRITE command are not raised to caller's error trap.

Now ZWRITE throws some errors that were ignored before, but they are serious show-stopper errors that should not happen in a normal environment.

DP-404892: Changes to how ZWRITE displays IEEE doubles

Category: ObjectScript
Platforms: All
Version: 2021.2.0

There are minor changes in the way ZWRITE displays IEEE double-precision floating-point values. The new formatting is more readable and provides better cutting and pasting output values. This should not impact most code, but if your code is looking for specific text in ZWRITE output, you may have to modify it to handle these changes.

DP-410011: ZWRITE preserves $ZR unless a global arg is given

Category: ObjectScript
Platforms: All
Version: 2022.1.0

In this release, ZWRITE has the following new behavior:

• If you ZWRITE a local variable (defined or not): ZWRITE will always preserve the original $ZR value. In previous releases, $ZR could be set to an unexpected value overwriting the previous $ZR value.
• If you ZWRITE a global with or without a subscript, it will always set $ZR to be that global reference, defined or not. In previous releases ZWRITE a global would vary how it set $ZR depending on whether the global was defined with or without a subscript.

DP-424951: $ZHOROLOG to use montonic clock

Category: ObjectScript
Platforms: All
Version: 2023.3.0

The change makes $ZHOROLOG use a monotonic clock, meaning the utility does not go backward due to NTP or daylight savings time. The time elapsed according to $ZHOROLOG may diverge from time elapsed as seen by taking changes of the real time as reported by $h, $ztimestamp, or $now; any code that expects those changes to be equivalent may need to be updated.

DP-428798: Fixed copy file errors on Unix systems

Category: ObjectScript
Platforms: UNIX®
Versions: 2022.1.5, 2023.1.4, 2024.1.0

This change fixes an issues that resulted in a failed copy (using the Library.File.CopyFile() method) on Unix systems when the destination does not exist.

It also adjusts the return codes for multiple failure cases when using Library.File.CopyFile().

DP-11014+PLUS: Remove ability to connect to Caché from .NET Provider or ODBC

Category: ODBC
Platforms: All
Version: 2020.3.0

In order to enable new features, neither the .NET Provider nor ODBC supports connections to Caché instances in this release. The .NET Provider can only connect to InterSystems IRIS instances version 2019.1 and later.

DP-11827: 32-bit ODBC driver removed on UNIX®

Category: ODBC
Platforms: UNIX®
Version: 2020.3.0

With this change release, the 32-bit ODBC drivers libirisodbcu35.so and odbcgatewayu.so have been removed on UNIX® systems. If you have used these drivers, you should use the 64-bit equivalents libirisodbcur6435.so and odbcgatewayur64.so.

If you are switching over to the 64-bit unixODBC client driver (libirisodbcu6435.so), you should also make sure you are using the 64-bit unixODBC driver manager and that your applications are built against 64-bit unixODBC. If your app or driver manager is 32-bit and is trying to use the 64-bit driver, this could cause unexpected problems. This change only impacts the 32-bit ODBC drivers built against the unixODBC driver manager. The 32-bit iODBC-based drivers are still included in the installation.

DP-408254: Do not allow insert SQL_CHAR or SQL_WCHAR values into BINARY field

Category: ODBC
Platforms: All
Version: 2022.1.0

If your code uses SQL_CHAR or SQL_WCHAR for binding into a BINARY field, you need to change it to SQL_BINARY. This combination is unlikely to be used in code.

DP-409303: Convert TIME_STRUCT to POSIX

Category: ODBC
Platforms: All
Version: 2022.2.0

On insert TIME_STRUCT into POSIX field (1093), the ODBC driver will convert TIME_STRUCT to POSIX with default date 1-1-1900.

DP-413402: SYSTEM: correct some Security.Datatype.* ClientDataType and OdbcType settings

Category: ODBC
Platforms: All
Version: 2022.2.0

The OdbcType for the following system datatype classes has been updated to be VARCHAR, where before it was an Integer: * Security.Datatype.Authentication * Security.Datatype.BooleanYN * Security.Datatype.LDAPFlags * Security.Datatype.Permission * Security.Datatype.PrivateKeyType * Security.Datatype.Protocol * Security.Datatype.ResourceType * Security.Datatype.SSLType * Security.Datatype.ServiceCapabilities * Security.Datatype.TLSVersion

DP-422960: ODBC. Do not convert data from BINARY to WCHAR

Category: ODBC
Platforms: All
Version: 2023.2.0

Previously, when converting BINARY data to the ASCII representation, it was initially converted into WCHAR. This has been changed, such that the ODBC driver now converted BINARY data directly to the ASCII representation.

DP-427540: ODBC. Do not accept TRANSACTION_SERIALIZABLE for SQL_ATTR_TXN_ISOLATION

Category: ODBC
Platforms: All
Version: 2024.1.0

When setting the connection attribution for SQL_ATTR_TXN_ISOLATION, the server now only accepts two values, SQL_TXN_READ_UNCOMMITED and SQL_TXN_READ_COMMITTED. Previously the system accepted SQL_TXN_SERIALIZABLE and internally converted it to SQL_TXN_READ_COMMITTED, but this conversion has been removed.

DP-412390: Require minor OS version in installs on Red Hat and SUSE

Category: Platforms
Platforms: UNIX®
Versions: 2022.1.1, 2022.2.0

Installation on Red Hat 7 x64 will require minor version 9 or above.

Installation on Red Hat 8 x64 and ARM64 will require minor version 2 or above.

Installation on SUSE 15 x64 will require minor version 3 or above.

PLATFORMS-CENTOS-7: Centos 7 no longer supported as a developer platform

Category: Platforms
Platforms: All
Version: 2022.2.0

In this release, Centos 7 is no longer supported as a developer platform.

PLATFORMS-ICU-691: ICU 69.1 & Xerces 3.2

Category: Platforms
Platforms: All
Versions: 2022.1.1, 2022.2.0

In this release, ICU has been updated to version 69.1. Also the current Xerces version is now 3.2.

PLATFORMS-POWERPC: PowerPC chip sets no longer supported

Category: Platforms
Platforms: AIX
Version: 2022.2.0

This release drops support for the older PowerPC chip sets. For IBM AIX, the product is now supported only on POWER Systems (POWER 7 and higher).

PLATFORMS-RH7: Remove RH7 support

Category: Platforms
Platforms: UNIX®
Version: 2022.2.0

This release removes support for Red Hat 7.x.

PLATFORMS-UBUNTU-1804: Remove Ubuntu 18.04 support

Category: Platforms
Platforms: UNIX®
Version: 2022.2.0

This release removes support for Ubuntu 18.04.

DP-11245: Passwords now use SHA-2 hashes

Category: Security
Platforms: All
Version: 2020.4.0

With this change, the product uses SHA-2 hashes for passwords instead of SHA-1; consequently, you cannot export a user with an SHA-2 password hash and import it into an earlier version of the product that does not use SHA-2 hashes for passwords. You can import a user with an SHA-1 password hash into this release or any release that supports SHA-2 hashes.

DP-11677: Rename IAM_API role to %IAM_API

Category: Security
Platforms: All
Version: 2020.1.0

The IAM_API role has been renamed to %IAM_API.

DP-12141: Cannot use old versions of cvendian and cvencrypt

Category: Security
Platforms: All
Version: 2020.2.0

The maximum length of encryption ID is now increased from 63 to 64, and the encryption ID should not contain wide characters.

As a result, you cannot use cvendian and cvencrypt utilities from previous versions on encrypted databases. Use the versions of cvendian and cvencrypt provided with this release.

DP-12897: Method signature changes in OAuth2.Server.Session

Category: Security
Platforms: All
Version: 2020.4.0

This change includes a change to the signatures of the GetUser() and Login() methods of the OAuth2.Server.Session class. If you have manually subclassed this class and overloaded these methods, you should be aware that the system may attempt to pass them one additional (string) parameter when dispatching to user code from the core methods GetUser and Login (respectively) of OAuth2/Server/Auth

DP-13887: FIPS mode must match operating system FIPS mode

Category: Security
Platforms: All
Version: 2021.1.0

If you attempt to start InterSystems IRIS in FIPS mode, the operating system must support FIPS mode and have been booted with FIPS mode enabled. Otherwise, InterSystems IRIS will not start and you must either enable FIPS mode in the operating system or not enable it in InterSystems IRIS.

DP-276687: ^EncryptionKey routine menu changes

Category: Security
Platforms: All
Version: 2019.1.0

The ^EncryptionKey routine has new menu choices that may require changes to scripts for previous versions. The changes in the menus are primarily associated with support for storing keys on a KMIP (key management interoperability protocol) server and support for modifying the encryption status of a database. Changes include:

• If you have configured a connection to a KMIP server, there is an additional choice (5) in the main menu, Manage KMIP server.
• If you have configured a connection to a KMIP server, then, in the Database encryption > Activate database encryption keys menu, the options differ from the menus in previous versions; there are multiple numbered options instead of only the prompt for the key file.
• If you have configured a connection to a KMIP server, then, in the Database encryption > Configure InterSystems IRIS startup options menu, there is a Unattended key activation with a KMIP server choice and submenu.
• In the Database encryption menu, there is a Modify encrypted status of existing database choice and submenu.
• If you have configured a connection to a KMIP server, then, in the Data element encryption > Activate data element encryption keys menu, the options differ from the menus in previous versions; there are multiple numbered options instead of only the prompt for the key file.

DP-402686: Changes to Security.Events:ListAll query arguments

Category: Security
Platforms: All
Version: 2021.2.0

The Security.Events:ListAll query is a public API though it is mostly used internally. If you are using it, you may need to update your code to handle the changes in the arguments. It has been changed to now only accept three arguments (Filter, OwnerFlag, Flags) instead of five (EventSources, EventTypes, Events, OwnerFlag, Flags). Therefore, after upgrading, you will have to make changes everywhere you call ListAll if you specify more multiple arguments.

Instead of searching EventSources, EventTypes, and Events separately, ListAll now combines the Source, Type, and Name of each event into one forward slash-delineated string and searches just that string. This means that the Filter argument essentially combines EventSources, EventTypes, and Events into one.

If you are only using one of EventSources, EventTypes, or Events, you can pass that value into the new ListAll as the Filter parameter and the query's behavior shouldn't change.

If you are using more than one of EventSources, EventTypes, and Events, you will have to make changes. The simplest thing to do is to combine the previous fields into one by putting a forward slash in between each field. For example, if you have EventSources="%System" and EventTypes="%Login" you can now use Filter="%System/%Login". Unfortunately, the new ListAll can't combine EventSources and Events without also having an EventType. So to specify EventSources="%System" and Events="Logout" you need to also have an EventType, for example: Filter="%System/%Login/Logout".

DP-403547: OAuth server now returns 401 for invalid credentials instead of 200

Category: Security
Platforms: All
Version: 2021.1.0

Prior to this change, InterSystems IRIS returned a status of 200 whether or not the user login to authorize OAuth was successful. If the login wasn't successful, the login page was displayed again with status of 200. If the login was successful, the permissions page was displayed with status of 200.

InterSystems IRIS now returns a status of 401 when the user login was unsuccessful. Customers working with OAuth, especially those who implement custom OAuth login pages, should be aware of this change.

DP-403594: Use OpenSSL MD5 Implementation

Category: Security
Platforms: All
Version: 2021.2.0

This change removes the ability to use the MD5 hashing algorithm on when in FIPS mode. Refer to the class reference for %SYSTEM.Encryption, which enumerates the limitations of encryption methods in FIPS mode, for more information.

DP-404283: Changes to enabling %ZEN.Dialog classes

Category: Security
Platforms: All
Versions: 2019.1.2, 2020.1.2, 2021.1.1, 2021.2.0

In this release, %ZEN.Dialog.* classes cannot be run in web applications unless the web application is enabled for analytics, the namespace is enabled for interoperability productions, or it is explicitly enabled for the web application. To explicitly enable %ZEN.Dialog.* classes, enter the following:

Set ^SYS("Security","CSP","AllowPrefix",application-name,"%ZEN.Dialog.")=1

Also, with this change, any web application that is enabled for analytics or interoperability will have %ZEN.Dialog.* classes enabled by default.

DP-405720: Return Intelligent Auth Challenges with "WWW-Authenticate" Header

Category: Security
Platforms: All
Versions: 2022.1.5, 2022.2.0

With this change, by default InterSystems IRIS REST applications set the "WWW-Authenticate" header to "Basic" on a 401 response.

DP-406389+DP-406711: Add versions to security tables

Category: Security
Platforms: All
Version: 2021.2.0

In previous releases, you could only export and import security tables between instances with the same major version. Now the security tables have an embedded version number, which allows finer access over allowable imports. You can export security tables from versions 2021.1 and 2021.2 and then import them to this version, 2022.1.

DP-408241: Change in permissions needed to run Task Manager tasks

Category: Security
Platforms: All
Version: 2022.1.0

Now %SYS.TaskSuper requires %Admin_Manage:Use in order to modify the ExecuteCode field of %SYS.Task.RunLegacyTask. Previously this check was only done in the Management Portal page.

The Management Portal page now checks for %Admin_Secure:Use in order to set the RunAsUser to a user other than the current user. Previously it incorrectly checked for %Admin_Manage:Use (TaskSuper checks %Admin_Secure).

DP-408293: Web Gateway now uses PBKDF2 to hash passwords

Category: Security
Platforms: All
Version: 2022.1.0

The Web Gateway provides a feature where if a plain-text password is written to CSP.ini directly, the Web Gateway encodes the password at startup. This feature will no longer work if the plain-text password starts with the string "PBKDF2|".

The CSPpwd utility is recommended if you want to avoid this limitation.

DP-412937: Audit log improvements

Category: Security
Platforms: All
Version: 2022.2.0

The audit log has been corrected as follows, for better usability:

• Background tasks started in the Portal are now audited with a TaskStart and TaskEnd audit record. Previously there was just a JobStart and JobEnd logged, but it did not specify what task was being run.
• Started and stopping of %SYS.WorkQueue jobs are excluded from the audit log.
• Starting and stopping of %Service_WebGateway jobs are excluded from the audit log.

DP-413405: Revert Security.Events:ListAll() to preserve backwards compatibility

Category: Security
Platforms: All
Version: 2022.1.0

Previously, DP-402686 added a new query called ListByFilter() to the Security.Events class and then reconfigured the ListAll() query to call this new query. In doing so, it changed the signature of ListAll(), which broke backwards compatibility.

This change reverts Security.Events:ListAll() to what it was before DP-402686. Then, to maintain the SMP fix that DP-402686 introduced, it changes the SystemEvents and UserEvents SMP pages to call the ListByFilter() query instead of ListAll().

As a result, the backwards compatibility of Security.Events:ListAll() has been restored.

DP-414613: SECURITY: Require new %Secure_Native Resource:USE for Native API calls

Category: Security
Platforms: All
Version: 2022.2.0

There is a new system Resource called %Service_Native.  The system-defined roles %Developer and %Manager have the USE permission on this resource by default.

%Service_Native controls whether the user can issue Native API calls via Java, .NET, Python, and Node.js.  In order to use the Native API, the user must have the %Service_Native:USE permission.

DP-414811: Add JWTAudience field to OAuth2 clients

Category: Security
Platforms: All
Versions: 2022.1.4, 2022.2.0

This change adds the ability for an InterSystems IRIS OAuth2 client to manually configure the value to use in the "aud" header when using the private_key_jwt and client_secret_jwt authentication methods, as well as for the JWT Authorization grant type. 

This can be done with the new JWTAudience property in the OAuth2.Client class. This can be configured via the "Audience" field in the OAuth2 Client Configuration page in the Management Portal.

For new OAuth2 client configurations, this will default to use the Authorization server's token endpoint. If it is not defined (e.g., for existing configurations) it will continue to use the Authorization server's issuer endpoint. 

NOTE: InterSystems IRIS Authorization servers prior to DP-414485 require clients to use the issuer endpoint. This means that in order to for newly created InterSystems IRIS OAuth2 clients running on a system with this change to authenticate with an InterSystems IRIS OAuth2 Server without DP-414485, the user will need to manually configure the JWT Audience.

DP-422560: HTML encode REST error messages

Category: Security
Platforms: All
Versions: 2022.1.4, 2023.1.1, 2023.2.0

Previously, error messages returned from REST APIs were not HTML encoded. This issue has been corrected.

DP-423672: web gateway secret management for cloud

Category: Security
Platforms: UNIX®
Version: 2023.3.0

Unix® users with passwords that start with { and end with } for Web Gateway server configurations will need to change them, or the will be interpreted as commands. Other platforms are not affected.

DP-424657: Add %Admin_OAuth2_Client permission

Category: Security
Platforms: All
Version: 2023.3.0

This change adds the %Admin_OAuth2_Client permission, which gives minimum permissions to a system that uses InterSystems IRIS as a client to an OAuth2 authorization server.

Any custom roles that had %Admin_Secure and fit this use case need to be updated to contain this resource.

DP-424919: Add %Admin_OAuth2_Server and %Admin_OAuth2_Registration resources

Category: Security
Platforms: All
Version: 2024.1.0

This change introduces two new resources OAuth 2.0 access. The %Admin_OAuth_Server resource controls the management of configurations that use InterSystems IRIS as an authentication server. The %Admin_OAuth2_Registration resource controls the management of clients when InterSystems IRIS is the authorization server.

DP-425110: Tighten OAuth2 JWT security requirements

Category: Security
Platforms: All
Version: 2023.3.0

This change makes "RS256" the default value for the SigningAlgorithm field in the OAuth2.Configuration class. Additionally, %OAuth2.Server.JWT now returns an error if no signing algorithm is defined for a JWT access token. the JWTToObject() method of the %OAuth2.JWT class no longer considers unsigned an unencrypted JWTs to be valid. However, this behavior can be overridden by using the new AcceptUnsecured parameter.

DP-427034: SQL: kill INTO Array when SQLCODE'=0

Category: Security
Platforms: All
Version: 2024.1.0

With this change, an output array created by an Embedded SQL statement reverts to its initial state if SQLCODE '= 0. Any pre-existing nodes that contained data still have that data, but no new data is added.

DP-8893: Cannot delete %SYS.PhoneProvider that is in use

Category: Security
Platforms: All
Version: 2019.4.0

In this release, you cannot delete a %SYS.PhoneProvider if it is in use. Some deleted operations that previously succeeded will now fail. This is an intentional feature but could cause some unexpected behavior in unusual cases.

TLS-2021: Removal of TLS 1.3

Category: Security
Platforms: All
Version: 2021.1.0

InterSystems IRIS 2020.2 through 2020.4 contained the new TLS 1.3 security libraries. On some platforms, we discovered that there were conflicts with older versions of the libraries installed by the operating system or other applications. Consequently, we have removed TLS 1.3 from this release. We will include TLS 1.3 support in a future release in a way that will not conflict with older versions of the library that are installed on the system.

DP-10106: Sybase TSQL dialect variable names are now case sensitive

Category: SQL
Platforms: All
Version: 2020.1.0

Sybase TSQL dialect now properly supports case sensitive variable names in procedure code. For example, the following declares two different variables:

declare @myvariable varchar(255)
declare @MyVariable varchar(255)

Before this change, in TSQL Sybase dialect, if you declared a variable in one case, and referenced it in another, it would work. For example, the following did work but no longer works in the Sybase dialect:

@declare @A int select @a = 1

NOTE: When using MSSQL dialect, variable names are case insensitive. The code defining myvariable and MyVariable will produce an error if compiled with MSSQL dialect, but the code declaring variable A and referencing variable a will work in MSSQL dialect.

DP-10720: Remove unused environment variables

Category: SQL
Platforms: All
Version: 2020.3.0

Some environment variables that were not used by SQL or the class compiler have been removed. These were not used by the product, but if you have referenced them, you should remove them from your application. As of this change, the following variables are no longer defined:

envRoutineSizeGet
envUseOldJavaGeneratorGet
envUseJavaGenerator1Get
envUseJavaGenerator2Get
envUseJavaGenerator3Get
envUseSortGet
envTimeChangedGet

envDefaultOHandleClassNameGet
envDefaultSerialStateClassNameGet
envDefaultStorageClassNameGet

DP-11269: Changes to TuneTable and TuneSchema defaults

Category: SQL
Platforms: All
Version: 2020.3.0

With this change, the second argument of $SYSTEM.SQL.TuneTable and $SYSTEM.SQL.TuneSchema (update) now has a default=1.

Before this change, the default was 0 for update. Calling $SYSTEM.SQL.TuneTable(tablename) and $SYSTEM.SQL.TuneSchema(schemaname) without specifying a value for the second argument will result in a change of behavior from previous versions.

DP-11573: SQL Import/Export wizard now restricts file extensions

Category: SQL
Platforms: All
Versions: 2019.1.2, 2020.1.1, 2020.2.0

With this change, the SQL Import/Export wizard ([System Explorer] -> [SQL] -> [Wizards] -> [Data Import/Export]) will only allow the user to import from or export to files on the server with an allowed extension. Allowed extensions are: .txt, .csv. Previously any file on the system could be used. When importing from or exporting to a file on the client system, filenames are not restricted.

DP-12017: SELECT with INTO clause changes

Category: SQL
Platforms: All
Version: 2020.3.0

This change modifies the behavior of an embedded SELECT statement with an INTO clause. If the execution of the SELECT statement results in SQLCODE=100, or in the case of a FETCH that results in SQLCODE=100, any INTO variables in the statement will be set to null ("") if they are defined. If the INTO variable was undefined prior to the execution of the SELECT, and the SELECT does not set the variable (or any previous FETCH does not set the variable for cursor selects), the variable will remain undefined. If the variable was defined prior to the SELECT, or the SQL SELECT or FETCH sets the variable, the variable will be set to "" when SQLCODE=100 or SQLCODE<0 is returned.

This change might result in some applications requiring updating in order to avoid application errors, or incorrect results returned.

DP-12603: Corrections to datetime functions to disallow invalid input

Category: SQL
Platforms: All
Version: 2020.4.0

Before this change, some invalid inputs to datetime functions would not cause an error but would return a value. Now these errors are caught and returned as errors. If your code does not handle errors in these functions, you should add error handling.

DP-13700: $SYSTEM.SQL not using SQLCODE in some contexts

Category: SQL
Platforms: All
Version: 2020.4.0

The error information formerly provided in SQLCODE from $SYSTEM.SQL.Statement ClearAll(), ClearRelation(), ClearSchema(), ClearStatement(), FreezeAll(), FreezeSchema(), FreezeRelation(), FreezeStatement(), UnfreezeAll(), UnfreezeSchema(), UnfreezeRelation(), and UnfreezeStatement() is now included in the return status. The error information provided by SQLCODE from $SYSTEM.SQL FreezePlans() and ClearStatistics() can be found in the Errors parameter. SQLCODE has been removed from the PublicList in these contexts.

DP-13850: Map selectability changes for mapped tables

Category: SQL
Platforms: All
Version: 2020.4.0

Before this change, if you set map selectability for a table definition that was mapped into another namespace, the map selectability setting was changed for the table definition in all namespaces. With this change, you only set the map selectivity for a single namespace.

DP-13937: Remove truncation to 150 characters on INFORMATION.SCHEMA.STATEMENTS:Statement column

Category: SQL
Platforms: All
Version: 2020.4.0

In previous releases, an ORDER BY STATEMENT on INFORMATION.SCHEMA.STATEMENTS:Statement column was automatically truncated to 150 characters. This automatic truncation has been removed to allow you to use more characters. However, in some cases having no truncation can cause a subscript error. To avoid this you should explicitly specify a truncation that will catch significant data, but will not be unlimited.

DP-14007: SELECT with INTO clause changes when SQLCODE'=0

Category: SQL
Platforms: All
Version: 2021.1.0

This release contains a change to the behavior of an embedded SELECT statement with an INTO clause. If the execution of the SELECT statement results in SQLCODE=100, or in the case of a FETCH that results in SQLCODE=100, any INTO variables in the statement will be set to null (""). The variable will be set to "" when SQLCODE=100 or SQLCODE<0 is returned.

DP-286376: SQL default precedence changed (new installs)

Category: SQL
Platforms: All
Version: 2019.1.0

In this release the default SQL precedence is set to ANSI operator precedence on new installs. If your code is depending on strict left-to-right precedence and you are running on an install upgraded from an earlier system, there is no problem. But, if you transfer your code to a system with a new install, you can set the precedence to strict left-to-right by calling $system.SQL.SetANSIPrecedence(0). If you want to change an upgraded system to use ANSI precedence, call $system.SQL.SetANSIPrecedence(1).

DP-286844: New default for parallel queries can change order of results

Category: SQL
Platforms: All
Version: 2019.1.0

With this change, the default is to enable automatic parallel execution of queries (where supported) in new installs. Consequently, queries without an ORDER BY clause may return results in a different order than the same query would in previous versions. To guarantee the order of results for any query, include an appropriate ORDER BY clause. If your code assumes the order of results of a query without an ORDER BY clause, you may run into this problem. If you are using an instance upgraded from before this change, you will not run into this problem because the upgrade retains the previous setting of not using automatic parallel queries. But if you transfer your code to a system with a new install, you could run into this problem.

DP-289304: Preserve data types in dynamic SQL arguments

Category: SQL
Platforms: All
Version: 2019.1.0

In processing dynamic SQL, the previous versions replaced literal with parameters but lost data type information. This caused some conversion errors. This release corrects this problem by preserving the data type information, but consequently, the data type of the resultset may be different in this release from the previous release. If your code assumes the data type of the resultset, you may have to update it to accommodate this change.

DP-289316: IDENTITY column datatype change

Category: SQL
Platforms: All
Version: 2019.1.0

In this release an identity column created via DDL that does not explicitly specify a data type defaults to a BIGINT data type. In previous releases, it defaulted to an INTEGER data type. If you have code that relies on this default, you should update it.

DP-289996: SQL efficiency improvements change internal storage

Category: SQL
Platforms: All
Version: 2019.1.0

In this release, InterSystems IRIS stores empty values in lists more efficiently. In previous releases, it stored empty values as a null string, but in this release, it stores it as a null. From SQL access, there is no compatibility issue, but if you access the underlying global storage structure and expect to find a null string, you may get a <NULL VALUE> error.

DP-291519: TRUNCATE TABLE command %ROWCOUNT change

Category: SQL
Platforms: All
Version: 2019.1.0

For better performance, the TRUNCATE TABLE command has been enhanced to delete the entire extent of the target table at once instead of row-by-row. In these cases, the resulting %ROWCOUNT value will be -1 rather than a count of rows that were deleted.

DP-402901: SQL PURGE QUERIES BY AGE and FREEZE BY ID changes

Category: SQL
Platforms: All
Version: 2021.2.0

If you use any of the following PURGE or FREEZE constructs, you must ensure that you specify the value with a literal, not with an identifier:

• PURGE [CACHED] QUERIES BY AGE value
• [UN]FREEZE BY ID value

DP-405610+DP-408694: (New installs) default DDL type mapping for TIMESTAMP is %Library.PosixTime

Category: SQL
Platforms: All
Version: 2021.2.0

In new installations, the default DDL Mapping for type TIMESTAMP has been changed from %Library.TimeStamp to %Library.PosixTime. This does not affect instances which were upgraded from a previous release. If you port code from a previous release to a new installation of this release, you may need to modify code to handle this change.

If a field has a datatype of %Library.DateTime, the fastinsert optimization will not be used and execution will be slower. You can resolve this issue by updating the datatype to use PosixTime, which is recommended over DateTime.

DP-406218: Runtime Plan Choice (RTPC) is now enabled by default

Category: SQL
Platforms: All
Version: 2021.2.0

The default value for the RTPC parameter has changed from 0 to 1. When RTPC is enabled (=1), InterSystems SQL queries can perform optimization based on outlier information. For further details on outlier selectivity, refer to Tune Table in the InterSystems SQL Optimization Guide.

Note that for some queries, this may not be the best choice. See Adaptive SQL Optimizer for details on RTPC and review whether you wish to use this optimization.

DP-406452: For READ UNCOMMITTED, build and run separate queries

Category: SQL
Platforms: All
Version: 2022.2.0

Improve the generated code for embedded SQL and %SQL.Statement dynamic SQL by building separate queries based on the partition's isolation mode. If the partition is in READ UNCOMMITTED, we can build parallel queries which can be a major performance improvement. We also do not need to generate runtime logic checking the isolation mode and then re-reading data for READ COMMITTED in the default READ UNCOMMITTED queries.

As part of this change, we added logic so we can find frozen plans for these queries if they were frozen before the partition isolation mode was added to the query.

The isolation mode is added with a SQL comment option that looks like this:

/*#OPTIONS { "IsolationLevel":0 } */

Two compatibility issues should be noted:

1) This change may cause queries to be run in parallel automatically based on the auto-parallel heuristics. If a query does not specify a strict ordering of results (no ORDER BY, for example) then SQL is allowed to return results in any order it wishes and in this case running a query in parallel will cause the order of results to be different on each run of the query. If the user needs the results in a specific order they should include an ORDER BY clause in the query or add the %NOPARALLEL keyword to the query.

2) For %SQL.Statement with this change, the process isolation level will be determined when we prepare the query and not when we execute. This is different from the previous behavior where the process isolation level was taken from the query execution time. Customers do not normally change process isolation level with queries already prepared so it is unlikely this will cause problems, but it is a change in behavior.

DP-407729: FIX: NOT %INLIST and NOT IN disparity when there is a NULL in the list

Category: SQL
Platforms: All
Version: 2022.1.3

This change makes the behavior of NOT %INLIST $listbuild(x,NULL,:z) consistent with the behavior of NOT IN (x, NULL, :z).

DP-408808: When FETCH call has two sets of INTO variables, fetch results into both sets of variables

Category: SQL
Platforms: All
Version: 2022.1.0

This change restore behavior of embedded SQL when DECLARE <name> CURSOR has INTO variables and the FETCH also has INTO variables. A previous change unintentionally modified the behavior so that the code updated only the DECLARE <name> CURSOR variables.

This change restores the previous behavior of updating both sets of variables.

DP-411232: New %DROP_UNOWNED SQL admin privilege

Category: SQL
Platforms: All
Version: 2022.2.0

In previous releases, if a user held the %DROP_TABLE or %DROP_VIEW administrative privilege, the user would be able to drop a table or view that the user did not own. In this release, in order to drop a table or view, the user must either be the owner of the table or view or must hold the %DROP_UNOWNED administrative privilege (which is new in this release).

DP-412103: SQL STRING(...) function now correctly handles nulls and empty strings

Category: SQL
Platforms: All
Versions: 2022.1.4, 2022.2.0

This change modifies the SQL STRING(...) function code generator to work correctly for any number of parameter values, including NULL and the empty string (which is represented internally as $char(0)), and to generate more efficient code.

Prior to this change, the SQL STRING(...) function would return a NULL value ("") if ANY of the parameters are NULL, which was incorrect. In this scenario, the NULL value is meant to be treated as an empty-string ('') if other parameters are present. 

Now the logic of SQL STRING(...) is in line with the Sybase SQL Anywhere definition, and will return the concatenation of all parameters, treating NULL parameters as the empty-string ('') as in the following example:

SELECT STRING('This', ' ', NULL, 'now', ' ', 'works!') INTO :testdata
SELECT STRING('This', ' ', '', 'now', ' ', 'works!') INTO :testdata

With this change, each of these SQL statements set the testdata variable equal to "This now works!"

DP-412300: Add %NOJOURN SQL Admin priv & disable transactions with %NOJOURN SQL keyword

Category: SQL
Platforms: All
Version: 2022.2.0

With this change, users must now hold the %NOJOURN SQL Admin privilege in order to use the %NOJOURN keyword in INSERT [ OR UPDATE ], UPDATE, DELETE, BUILD INDEX, or fast insert statements. Also, the %NOJOURN flag for INSERT [ OR UPDATE ], UPDATE, DELETE, and fast insert statements now explicitly turns off transactions. Transactions are implicitly skipped when journaling is disabled, but this change optimizes mirrored environments because mirrors must keep journalling enabled so that data can be propagated to backups. Also, this change fixes a bug where %NOLOCK SQL Admin priv was not checked when %NOLOCK is used in BUILD INDEX statements.

DP-413011: Prevent some datatype combinations in CASE value expressions

Category: SQL
Platforms: All
Version: 2024.1.0

With this change, certain combinations of data types in CASE statements are no longer permitted and will throw errors instead of yielding potentially unexpected behavior. CASE statements may still combine ODBC numeric types (BIGINT, INTEGER, DOUBLE, NUMERIC, SMALLINT, TINYINT, BIT). Statements may also combine only GUID and VARBINARY with each other. An example of an invalid combination would be TIME with a numeric value, as in:

CASEWHEN case1 THEN MyTimeFieldWHEN case2 THEN MyIntegerFieldEND

CASEWHEN case1 THEN CAST(MyTimeField AS INT)WHEN case2 THEN MyIntegerFieldEND

DP-413023: Require double quotes around delimited identifiers

Category: SQL
Platforms: All
Version: 2024.1.0

This change prevents the parser from accepting a non-quoted delimited identifier of the form <number><simpleidentifier> as <number>  <simpleidentifier>. Before this change, the parser would accept this as a constant field with identifier <simpleidentifier> and value <number>. With this change, the parser will now throw an error.

DP-413732: Modify %UnitTest.Common.INC to replace PTools-specific macros with symmetric general-purpose macros

Category: SQL
Platforms: All
Version: 2024.1.0

This change deprecates all PTools-specific macros in the %UnitTest.Common.INC file. The file still contains the macros (to facilitate any transition), but the macros will be removed in a future release. If you have used the PTools-specific macros, update your code to use the general-purpose ones.

It's also important to note that there are two macros that have the same name between the  PTools-specific macros and the general-purpose macros, so this change renames the following PTools-specific macros:

FROM:
  /// Duplicate MACRO name changed to help transition from DEPRECATED MACROs
  #DEFINE UTDevLog $$$getCurrentUTPToolsDevLog
  #DEFINE UTDevLogQ $$$getCurrentUTPToolsDevLogQ


TO:
  /// 'UTDevLog' & 'UTDevLogQ' replaced by 'UTPToolsDevLog' & 'UTPToolsDevLogQ'
  /// to help transition from the Duplicate & DEPRECATED MACROs
  #DEFINE UTPToolsDevLog $$$getCurrentUTPToolsDevLog
  #DEFINE UTPToolsDevLogQ $$$getCurrentUTPToolsDevLogQ

DP-413836: Correct %Next() of %SQL.ClassQueryResultSet to set %SQLCODE and %Message properties

Category: SQL
Platforms: All
Version: 2024.1.0

Before this change, the %Next() method of %SQL.ClassQueryResultSet would not set %SQLCODE and %Message. Now, when the %Next() method receives a bad status code from the Fetch() method of a class query, it will accurately set the %SQLCODE and %Message properties.

In some cases, a class query's Fetch may now result in %SQLCODE being set to reflect a failure whereas it may have previously failed silently.

DP-414622: Require %Development:USE privilege for DDL statements that invoke external language code

Category: SQL
Platforms: All
Version: 2022.2.0

There are a number of DDL statements in which a user can call ObjectScript or Python (and in some cases Java and DotNet) code. The following shows an example:

CREATE TABLE Test.MyTable(MyField VARCHAR(100), MyOtherField INT COMPUTECODE OBJECTSCRIPT \{set {MyOtherField} = +$h / 2})

Before this code, there was no check that the user executing such DDL statements had %Development:USE privileges.

With this change, a user who does not have %Development:USE permissions will encounter a privilege violation (SQLCODE -99) error and the DDL will fail. The DDL statements affected are CREATE METHOD/PROCEDURE/FUNCTION/QUERY/TRIGGER, and CREATE/ALTER TABLE where the user specifies ObjectScript DEFAULT or COMPUTECODE for a column.

The only scenarios in which a user without proper permissions can still execute such DDL statements are as follows:

• The DDL is executed via embedded SQL (embedded SQL does not do privilege checks)
• The code being run explicitly specifies no privilege checking, for example, a %SQL.Statement prepared with nocheck-priv or run with %ExecDirectNoPriv().

DP-414666: Check for %Service_SQL/%Service_Object/%Service_Native resources in the server

Category: SQL
Platforms: All
Version: 2024.1.0

There is a new system Resource called %Service_Native. The system-defined roles %Developer and %Manager have the USE permission on this resource by default. %Service_Native controls whether the user can issue Native API calls via Java, .NET, Python, and Node.js. In order to use the Native API, the user must have the %Service_Native:USE permission.

This change also categorizes server functions into three groups:  SQL, Object, and Native. A user that connects to the InterSystems IRIS Server requires:

• The %Service_SQL resource in order to execute SQL functions with a database driver
• The %Service_Object resource in order to execute Object functions
• The %Service_Native resource in order to execute Native/SYSIO functions

DP-414670: Update PTools/SQLStats to report number of commands rather than number of lines

Category: SQL
Platforms: All
Version: 2024.1.0

This change updates PTools/SQLStats to report the number of commands executed, rather than the number of lines executed. The number of commands is a better reflection of the amount of work that is being performed via InterSystems IRIS routine invocations.

DP-415695: Make %PosixTime default display value same as ODBC

Category: SQL
Platforms: All
Version: 2024.1.0

Before this change, the Display value for %PosixTime values defaulted to the default date and time formats for the InterSystems IRIS system.  Now the default date format is 3 and the default time format is 1, which matches the ODBC format and matches the Display format of %TimeStamp. 

You can always revert to the previous behavior by setting the DATEFORMAT=-1 and TIMEFORMAT=-1 in the type parameters of the %PosixTime property definition.

DP-418706: Update some CONVERT style code behaviors to match MS SQL Server

Category: SQL
Platforms: All
Version: 2022.1.2

This change will correct the behavior of CONVERT in InterSystems IRIS to output dates in the format as prescribed by MS SQL server, in order to ensure our function is compatible with MS SQL as stated in the documentation.

Similarly, for code 126, the CONVERT() function now generates output in the format yyyy-mm-ddThh:mi:ss.mmm.

DP-419630: Make INSERT OR UPDATE fail if the unique value belongs to a super class

Category: SQL
Platforms: All
Version: 2023.2.0

When users that have a class structure where there is a unique constraint in a super class attempt to INSERT OR UPDATE in the subclass, the command will now fail. Previously, this behavior did not throw an error, although an UPDATE would silently have been ignored.

DP-421723: Fix, refactor and optimize SQL <explain statement> error processing

Category: SQL
Platforms: All
Version: 2023.3.0

This change causes errors that arise from EXPLAIN statements to occur during query runtime, rather than compilation.

DP-422284: Allow predicate pushdown for foreign tables with QUERY clauses

Category: SQL
Platforms: All
Version: 2023.3.0

Useres must explicity ensure that column names provided for a QUERY-based foreign table are the same as the names in the QUERY clause of the CREATE FOREIGN TABLE commands or must provide a VALUES clause which specifies the names of the columns returned by the QUERY clause.

DP-424443: Remove quote/quoteall from %occUtility

Category: SQL
Platforms: All
Version: 2023.3.0

This change removes the internal $$quote and $$quoteall functions, which were included as internal-only utilities that were never intended for use in user-written code. Any user-written code that relied on these functions must be modified.

DP-424489: Update Native resource checks in CheckBindingsAccess()

Category: SQL
Platforms: All
Version: 2024.1.0

This change updates Native resource checks performed by the system to ensure the user has proper access.

DP-424924: SQL LOAD DATA changes for %NOINDEX and BULK

Category: SQL
Platforms: All
Version: 2024.1.0

Prior to this change, a LOAD DATA statement that specified %NOINDEX would build the indexes for the table automatically at the end of the run. This is no longer the case.

If LOAD %NOINDEX DATA or LOAD BULKT %NOINDEX DATA is executed, it is up to the caller to explicitly run BUILD INDEX on the table at a later time to populate in indexes.

Indexes for the table are built after all records are loaded when the %NOINDEX option is omitted.

DP-426466: Refactor and optimize the '$SYSTEM.SQL.Explain(...)' API/method

Category: SQL
Platforms: All
Version: 2024.1.0

This change alters the return type of $SYSTEM.SQL.Explain(); it now returns a refactored string, instead of an array.

To get the query plan as an array, use either $SYSTEM.SQL.ShowPlan(), $SYSTEM.SQL.ShowPlanAlt(), or specify the "PRINT-ARRAY" value for the format term of the qualifier parameter of the $SYSTEM.SQL.Explain() method to return the plan parameter as an array.

DP-427583: Treat canonical numbers better for GREATEST/LEAST

Category: SQL
Platforms: All
Version: 2024.1.0

It is possible that results returned from GREATEST and LEAST over JDBC would previously compare NUMERIC values incorrectly because they were treated as strings.

For example, GREATEST(?,1000), where ? is bound with a NUMERIC that is padded with zeroes to the right in order to attain the correct scale. In this case, the bound parameter may be less that 1000, but would have returned as greater than 1000.

DP-6859: Queries from Management Portal run in background

Category: SQL
Platforms: All
Version: 2019.3.0

Starting with this release, if you issue a query from the SQL Explorer page in the Management Portal, the query is executed in the background. While this enables query cancellation and avoids web request timeouts, it also means certain legacy stored procedures that depend on foreground execution and write to the current device may no longer display this logging information properly.

DP-8539: Universal cached queries for SQL

Category: SQL
Platforms: All
Version: 2020.1.0

This release improves SQL performance by caching all SQL queries. To achieve this, queries are compiled when they are first used, not when the class or routine containing the query is compiled. The environment at runtime when the SQL query is compiled can be slightly different from the class or routine compile-time environment. The compiler stores information when the class or routine is compiled that allows it to compile the SQL query in most cases without error.

In rare cases, SQL queries can contain macros defined in include files. If the class or routine was compiled in one namespace and the SQL query is compiled in a second namespace and the second does not contain the include file, the compilation will encounter an error. If this occurs, then you must add the include file to the second namespace.

DP-9412: Changes in TRUNCATE TABLE transactions

Category: SQL
Platforms: All
Version: 2019.4.0

TRUNCATE TABLE no longer initiates transactions when executed in AUTOCOMMIT_ON or AUTOCOMMIT_OFF mode. If you need the ability to rollback a TRUNCATE TABLE command, you must start your own transaction prior to executing the truncate table.

This change allows TRUNCATE TABLE to work much faster when the table contains millions of rows and the killing of the globals for the table no longer needs to be journaled.

DP-9570: TSQL parser changes

Category: SQL
Platforms: All
Version: 2019.4.0

Prior to this change, if you had defined:

^%SYS("tsql","SET","ANSI_NULLS")="OFF"

^%SYS("tsql","SET","QUOTED_IDENTIFIER")="OFF"

The TSQL parser would have behaved as if these settings were ON. Now that this has been corrected, if your code was really relying on either of these settings being ON, and if those settings are OFF, the run-time behavior of your procedure may be different.

SDK048: SQL Import/Export wizard now restricts file extensions

Category: SQL
Platforms: All
Versions: 2019.1.2, 2020.1.1, 2020.2.0

With this change, the SQL Import/Export wizard ([System Explorer] -> [SQL] -> [Wizards] -> [Data Import/Export]) will only allow the user to import from or export to files on the server with an allowed extension. Allowed extensions are: .txt, .csv. Previously any file on the system could be used. When importing from or exporting to a file on the client system, filenames are not restricted.

MAK5205: Changes to when SQL statement indexes are Removed

Category: SQL.Query Processing
Platforms: All
Versions: 2020.1.1, 2020.2.0

Previously when all routines/classes that contained a SQL statement were removed, the statement index entry was also removed. This meant that all lightweight SQL statistics were also removed when the routine/class that contained the SQL statement was removed. It is often very useful to have access to this historic information and in addition if the statement was frozen it was not removed, so this change modifies the behavior to always keep the SQL statement index entry (and lightweight SQL statistics) when the containing routine/class is deleted.

A new button has also been added to SQL statement index page in the system management portal called 'Clean stale' which will run a task to remove all statement index entries that are not frozen where the containing routine/class is no longer present or no longer contains this SQL statement.

This change does not impact how your code is executed, but in order to remove the index entries, you have to use the Management Portal.

TRW1706: Collation changes that can impact query processing

Category: SQL.Query Processing
Platforms: All
Versions: 2020.1.1, 2020.4.0

Concatenations of expressions that are coercible to a common collation (for example, string constants or parameters concatenated with commonly collated fields) will now be collated as the common collation. This change could lead to conditions that previously evaluated to false for certain values now evaluate to true. For example, the following condition will evaluate to true:

' ' || field LIKE 'A'

where field has a value 'a'. It is unlikely that any code is dependent on having a false value for this condition.

DP-404256: CSP pages not backed up by internal routine versioning

Category: System
Platforms: All
Version: 2021.1.0

This is a change to an undocumented feature, routine versioning, that some customers may be using. If you are using routine versioning, with this change CSP pages will not be backed up to the ^rBACKUP global.

DP-407254: Update interaction between delegated and password authentication

Category: System
Platforms: All
Versions: 2021.1.1, 2021.2.0

This fixes an issue with authentication ordering when delegated and password authentication are enabled. If your user authentication includes both delegated authentication and password authentication, you can choose either to call or not call ZAUTHENTICATE for password users. Typically, ZAUTHENTICATE is only used for delegated users and not for password users.

But if you want your ZAUTHENTICATE routine to also be called for password users, you should check the <b>Always try Delegated Authentication</b> in the <b>System Administration > Security > System Security > Authentication/Web Sessions Options</b> page in the Management Portal or by using the ^SECURITY utility (System Parameter Setup, Edit authentication options).

The default for <b>Always try Delegated Authentication</b> is No and ZAUTHENTICATE is not called for password users.

DP-408802: Remove experimental database compression from CreateDatabase() method

Category: System
Platforms: All
Version: 2021.2.0

This release removes an experimental feature, database compression, because the minor savings in storage did not justify the increased compute load. This removal should not impact any existing code unless you called ##class(SYS.Database).CreateDatabase() and included the compression engine parameter. If you did, you must remove this parameter or you will get a <PARAMETER> error.

Please note this experimental feature is independent of the journal compression and stream compression features, which are unaffected by this change.

DP-412345: New Super Server

Category: System
Platforms: All
Version: 2024.1.0

The SSLSuperServer Property in the Security.System class has been removed. If you manipulate or change this property via class methods, you will need to update that code to refer to the Security.Servers class instead.

DP-417383: Better defaults for shared memory heap and lock table

Category: System
Platforms: All
Version: 2023.1.0

Two parameters in the [config] section of the Configuration Parameter File (CPF) have changed:   gmheap=0 is the new default and is appropriate for most systems (including production systems) where no specific need for a specialized setting has been identified.  A setting of 0 allows the system to make inferences about overall system size and pick a reasonable value, between 300MB and 2GB. Non-zero values are strictly honored and can be set lower than 300MB or higher than 2GB.    locksiz=0 is the new default.  It is limited only by the size of the shared memory heap given by the gmheap parameter.  On upgrade, the current locksiz parameter is automatically set to 0.  If a non-zero value is specified, it specifies the exact number of bytes to serve as an upper limit on lock table memory within the gmheap.

DP-425794: Increase lock hash buckets by 4 times.

Category: System
Platforms: All
Version: 2024.1.0

This change improves the performance and scalability of the LOCK command, especially on large systems. However, the time to service an unsubscripted lock request increases; note that unsubscripted locks should be avoided in high-frequency usage pattens.

This change also increases the size of shared memory allocated at startup by approximately 3 MB.

DP-426106: Show correct variable name in %STACK and ^ERRORS when passed by reference

Category: System
Platforms: All
Version: 2024.1.0

Previously, the incorrect variable name could be displayed for NEW commands and DO arguments when the execution stack includes variables passed by reference. The issue has been resolved.

DP-426460: Clear naked indicator after a subscript error

Category: System
Platforms: All
Version: 2024.1.0

The naked indicator is now cleared after a global SUBSCRIPT error. Such a naked reference that may have worked previously will now get a NAKED error.

DP-427700: Add -mavx flag to intel/amd platforms

Category: System
Platforms: All
Version: 2024.1.0

This change makes it possible to generate AVX in the Intel platform.

DP-9437: Changes to TCP /BINDTO behavior

Category: System
Platforms: All
Version: 2019.4.0

If your application uses TCP device with /BINDTO option for outgoing connection, you may find the OPEN will fail if the IP does not exist in the local system.

DP-12771: Configuration API changes

Category: Tools
Platforms: All
Version: 2021.1.0

If you are using the %Net.Remote.Object gateway APIs to configure Object gateways, you must now use the Config.Gateways APIs. The properties associated with the old values LineRecallEntries and LineRecallBuffer in the Config.config class have been removed. If you were setting these properties via the Config.Config APIs, you will now need to update the "history" property rather than these.

DP-290726: With named pipes, the Bulk Loader does not report line count

Category: Tools
Platforms: All
Version: 2019.1.0

To improve the handling of named pipes, the Bulk Loader does not attempt to count the number of lines in the file. This decreases the accuracy of the progress report but improves the performance of the utility.

DP-423225: [Interoperability] XML VDoc to pass back error encountered creating output from use of internal stream

Category: VDoc - XML
Platforms: All
Version: 2023.3.0

Previously, errors encountered when generating out using internal stream were suppressed. This behavior has been changed so that such errors are now reported. These errors must be handled appropriately, either through code changes or production configurations.

DP-11838: No longer modify existing CSP.ini for external web server

Category: Web Gateway
Platforms: All
Version: 2020.2.0

Before this change, in environments where a third party web server is running remotely, the Web Gateway installer tried to modify some settings in CSP.ini which could result in unwanted changes in terms of service accessibility. A review of the configuration after each upgrade was always recommended.

With this change, the Web Gateway installer will not modify an existing CSP.ini in any way.

DP-11979: Web sockets with SharedConnection=1 can now time out

Category: Web Gateway
Platforms: All
Versions: 2019.1.2, 2020.1.1, 2020.2.0

In previous releases, a web socket connection with SharedConnection=1 would never time out. With this change, this connection will time out if it is inactive for the CSP session timeout.

DP-12747: SSLCC_Protocol parameter changes for TLS 1.3

Category: Web Gateway
Platforms: All
Versions: 2020.1.1, 2020.3.0

To allow for TLS 1.3, there are changes to the way you access the SSLCC_Protocol parameter. If you are using an external script or the Web Gateway registry methods (particularly %CSP.Mgr.GatewayMgr.GetServerParams or %CSP.Mgr.GatewayMgr.SetServerParams) to read/write the SSLCC_Protocol parameter in CSP.ini, you must adapt your code to use the SSLCC_Protocol_Min and SSLCC_Protocol_Max parameters instead.

DP-13182: Sites using Nginx must rebuild and reconfigure

Category: Web Gateway
Platforms: UNIX®
Version: 2020.4.0

If you use Nginx with the Web Gateway you must follow these steps to rebuild Nginx. If you do not use Nginx with the Web Gateway, you can ignore this issue.

If you are using Nginx with the default dynamic modules configuration (using CSPx.so and CSPxSys.so), note that we are now deprecating this configuration. The dynamic modules configuration will still function as before, but if you use the Web Gateway with Nginx you should rebuild and reconfigure Nginx to work with the Network Service Daemon (NSD) build of the Web Gateway instead. The NSD now supports WebSockets when used with Nginx, you can now migrate to the NSD even if you have a WebSocket application.

If you are already using Nginx with the NSD, you must still rebuild Nginx and edit its configuration to apply this change.

The steps you must follow are different if you are already using NSD or if you are migrating from dynamic module configuration.

If you are already using NSD:

1. Install an updated version of the Web Gateway.
2. Rebuild Nginx using the updated version of ngx_http_csp_module.c. See Nginx Web Servers for instructions on how to do this.
3. Add the CSPNSD_pass directive to the Nginx configuration file to indicate the hostname/IP and port where the NSD is listening. For example, if your configuration file contains:

   location /csp {
       CSP On;
   }
   

   and the NSD is listening at 127.0.0.1:7038 (the default), then change the configuration block to:

   location /csp {
       CSP On;
       CSPNSD_pass 127.0.0.1:7038;
   } 
   

4. Start up Nginx and the NSD.

If you are migrating to using Nginx with NSD from using Nginx with dynamic modules (CSPx.so, CSPxSys.so):

1. Install an updated version of the Web Gateway.
2. Rebuild Nginx using ngx_http_csp_module.c instead of ngx_http_csp_module_sa.c. See Nginx Web Servers for instructions on how to do this.
3. Remove the CSPModulePath directive from the Nginx configuration.
4. Add the CSPNSD_pass directive to the Nginx configuration file to indicate the hostname/IP and port where the NSD is listening. For example, if your configuration file contains:

   location /csp {
       CSP On;
   }
   

   and the NSD is listening at 127.0.0.1:7038 (the default), then change the configuration block to:

   location /csp {
       CSP On;
       CSPNSD_pass 127.0.0.1:7038;
   } 
   

5. Start up Nginx and the NSD. See Using the Network Service Daemon (NSD) and Using the NSD on UNIX, Linux, macOS for more information on how to manage the NSD.

This change also adds a few additional Nginx configuration directives that you should be aware of when migrating, and you should review whether their default values are acceptable for your workloads. If the default values are not acceptable, then specify your own value in the proper location{} block in the Nginx configuration file. These directives are:

• CSPNSD_response_headers_maxsize -- The maximum size of the HTTP headers in a response. An error is returned to the web client if a response header exceeds this size.
  • Syntax: CSPNSD_response_headers_maxsize size;
  • Default value: 8k
  • Context: location, if in location
• CSPNSD_connect_timeout -- Timeout for connecting to the NSD when a request is received from the web client.
  • Syntax: CSPNSD_connect_timeout time;
  • Default value: 300s
  • Context: location, if in location
• CSPNSD_send_timeout -- Timeout for a single send operation to the NSD when sending a request. The timeout is set only between two successive write operations, not for the transmission of the whole request.
  • Syntax: CSPNSD_send_timeout time;
  • Default value: 300s
  • Context: location, if in location
• CSPNSD_read_timeout -- Timeout for a single read operation from the NSD when reading a response. The timeout is set only between two successive read operations, ot for the transmission of the whole response.
  • Syntax: CSPNSD_read_timeout time;
  • Default value: 300s
  • Context: location, if in location

An example configuration that uses all the new directives is the following:

location /csp {
    CSP On;
    CSPNSD_pass 127.0.0.1:7038;
    CSPNSD_response_headers_maxsize 8k;
    CSPNSD_connect_timeout 300s;
    CSPNSD_send_timeout 300s;
    CSPNSD_read_timeout 300s;
}

DP-13734: Handle gateway timeout correctly

Category: Web Gateway
Platforms: All
Version: 2020.4.0

When the Gateway times out, the associated InterSystems IRIS processes should terminate. In some cases, this would not happen and the processes would continue. With this change, these processes are terminated correctly. If your application depends on this behavior to continue past this timeout, you should adapt your code to handle this situation.

DP-13874: Return HTTP error codes for redirects to custom error pages

Category: Web Gateway
Platforms: All
Version: 2020.4.0

This changes the status code returned when Web Gateway redirects to a custom error page. If your web application expects HTTP status 200 for these custom error redirections, you need to update it to handle 5xx codes.

DP-405460: Modify InterSystems IRIS to use the hash of the CPF in place of the timestamp

Category: Web Gateway
Platforms: All
Version: 2021.2.0

InterSystems IRIS now sends a hashcode instead of a timestamp to indicate whether the server configuration has been changed, and the Web Gateway now accommodates these hashcodes in addition to timestamps from older servers.

A newer standalone Web Gateway connecting to older InterSystems IRIS instances functions as before. An old Web Gateway connecting to newer InterSystems IRIS instances is not and has historically not been supported, but with this change it's particularly important for customers to keep their Web Gateway up to date. Old Gateways don't handle the hash from newer InterSystems IRIS instances and thus will not update their server configurations.

DP-410079: Make Maximum_Server_Connections a flat limit

Category: Web Gateway
Platforms: All
Version: 2022.2.0

This change makes Maximum Server Connections a flat limit instead of a per-process limit. The strategy is to implement a throttle in cspTCPIPOpenSession, tallying connections on the same server in addition to the session-ID-based tally. This change also makes it so that the Maximum Server Connections configuration field is displayed and used even in the non-threaded/multi-process case. Additionally, processes with status Server and Private now count toward the total server connection tally.

Customers who have multi-process web server architectures (e.g., Apache Prefork MPM) may need to adjust their Maximum Server Connection settings to accommodate more connections. The Web Gateway does not take responsibility for the underlying web server configuration. To support the same number of InterSystems IRIS server connections as before, simply multiply the original maximum connection limit by the web server's maximum number of processes. (In Web Gateway Management, see Server Configuration -> Maximum Server Connections.)

DP-7204: Fix a number of WebSocket thread-safety issues

Category: Web Gateway
Platforms: All
Versions: 2019.1.2, 2019.4.0

Fix a number of WebSocket thread-safety issues that resulted in occasional lost messages and dropped connections.

If you are using Nginx with the default dynamic modules configuration (using CSPx.so and CSPxSys.so), note that we are now deprecating this configuration. The dynamic modules configuration will still function as before, but everyone using the Web Gateway with Nginx is urged to rebuild and reconfigure Nginx to work with the Network Service Daemon (NSD) build of the Web Gateway instead. The NSD now supports WebSockets when used with Nginx, so migration to the NSD is now doable if you have a WebSocket application.

If you are already using Nginx with the NSD, you must still rebuild Nginx and edit its configuration to apply this change.

Migration instructions if you are already using Nginx with the NSD

1. Install an updated version of the Web Gateway.
2. Rebuild Nginx using the updated version of ngx_http_csp_module.c. See https://docs.intersystems.com/irislatest/csp/docbook/Doc.View.cls?KEY=GCGI_ux#GCGI_nginx_unnsd for instructions on how to do this.
3. Add the CSPNSD_pass directive to the Nginx configuration file to indicate the hostname/IP and port where the NSD is listening. For example, if your configuration file contains

   location /csp
   { CSP On; }
   

   and the NSD is listening at 127.0.0.1:7038 (the default), then change the configuration block to

   location /csp { CSP On; CSPNSD_pass 127.0.0.1:7038; }
   

5. Start up Nginx and the NSD.

1. Install an updated version of the Web Gateway.
2. Rebuild Nginx using ngx_http_csp_module.c instead of ngx_http_csp_module_sa.c. See https://docs.intersystems.com/irislatest/csp/docbook/Doc.View.cls?KEY=GCGI_ux#GCGI_nginx_unnsd for instructions on how to do this.
3. Remove the CSPModulePath directive from the Nginx configuration.
4. Add the CSPNSD_pass directive to the Nginx configuration file to indicate the hostname/IP and port where the NSD is listening. For example, if your configuration file contains location /csp { CSP On; } and the NSD is listening at 127.0.0.1:7038 (the default), then change the configuration block to

   location /csp

   { CSP On; CSPNSD_pass 127.0.0.1:7038; }

5. Start up Nginx and the NSD. See https://docs.intersystems.com/irislatest/csp/docbook/Doc.View.cls?KEY=GCGI_atypical_windows#GCGI_usingnsd and https://docs.intersystems.com/irislatest/csp/docbook/Doc.View.cls?KEY=GCGI_atypical_unix#GCGI_usingnsdunix for more information on how to manage the NSD.

This change also adds a few additional Nginx configuration directives that you should be aware of when migrating, and you should review whether their default values are acceptable for your workloads. If the default values are not acceptable, then specify your own value in the proper location{} block in the Nginx configuration file.

Syntax: CSPNSD_response_headers_maxsize size;
Default: CSPNSD_response_headers_maxsize 8k;
Context: location, if in location
Description: The maximum size of the HTTP headers in a response. An error is returned to the web client if a response header exceeds this size.


Syntax: CSPNSD_connect_timeout time;
Default: CSPNSD_connect_timeout 300s;
Context: location, if in location
Description: Timeout for connecting to the NSD when a request is received from the web client.


Syntax: CSPNSD_send_timeout time;
Default: CSPNSD_send_timeout 300s;
Context: location, if in location
Description: Timeout for a single send operation to the NSD when sending a request. The timeout is set only between two successive write operations, not for the transmission of the whole request.


Syntax: CSPNSD_read_timeout time;
Default: CSPNSD_read_timeout 300s;
Context: location, if in location
Description: Timeout for a single read operation from the NSD when reading a response. The timeout is set only between two successive read operations, not for the transmission of the whole response.

An example configuration that uses all the new directives is the following.

location /csp


{ CSP On; CSPNSD_pass 127.0.0.1:7038; CSPNSD_response_headers_maxsize 8k; CSPNSD_connect_timeout 300s; CSPNSD_send_timeout 300s; CSPNSD_read_timeout 300s; }

DP-13358: Re-implement UNIX XDEVshm

Category: xDBC
Platforms: UNIX®
Version: 2020.4.0

In order to fix problems in the previous implementation, the UNIX XDEVshm code has been rewritten. Although the basic functionality is unchanged, there may be minor changes in behavior. Consequently, if you use XDEVshm on the UNIX platform, you should test your code to ensure that it is not sensitive to these minor changes.

DP-408030: xDBC rejects connections when server ListFormat is not supported

Category: xDBC Server
Platforms: All
Version: 2022.1.0

This change corrects a connection error with an illegal ListFormat setting that was ignored by previous releases. If the server was configured with ListFormat 2 or 3, the connection will now be rejected. This setting was never supported by the clients and could result in inconsistent behavior or data loss if the connection was allowed.

DP-414746: SQL SERVER: Remove obsolete and deprecated functions from DBSRV

Category: xDBC Server
Platforms: All
Version: 2024.1.0

With this change, early InterSystems IRIS XEP client versions may no longer work. XEP customers will have to upgrade to the newer XEP client version.

Specifically, this change removes support for the following obsolete and deprecated functions from %SYS.DBSRV:

• All XEP functions have been removed except XW (Bulk Fetch). All other functions have been replaced with SYSIO function calls.
• RS - Retrieve stream (ODBC old implementation)
• CV - Compare TImestamp