Viewing Messages from Multiple Productions
In some cases an overall business process spans multiple productions. Although a namespace can have only a single production, you can have multiple productions running using any of the following configurations or any combination of them:
Multiple namespaces running on a single instance of InterSystems IRIS™, each with its own production.
Multiple instances of InterSystems IRIS running on a single system.
Multiple systems each running an instance of InterSystems IRIS.
If you are running and monitoring multiple productions, we recommend that you define a separate namespace for each production, even if they are running on separate InterSystems IRIS instances or on separate systems.
There are two features that allow you to search for messages from multiple productions:
The Enterprise Message Viewer allows you to search for and view messages from multiple productions, without the need to store the messages centrally. The Enterprise Message Bank stores messages from multiple productions into a central repository, where they can be stored, analyzed and processed in other ways. This reduces the need to store data on the individual InterSystems IRIS systems.
The Enterprise Message Viewer allows you to search for messages across multiple productions. The Enterprise Message Viewer sends your query to the interoperability-enabled namespaces running the business productions, and the productions return the messages that match the query to the Enterprise Message Viewer. You do not have to modify the production to access its messages in an Enterprise Message Viewer.
The Enterprise Message Bank allows you to store messages from one or more productions into a central repository, where they can be stored, analyzed and processed in other ways. The productions send their messages to the Enterprise Message Bank. To enable this, you must add a Message Bank Operation to each production and configure it to connect to the Message Bank. The Message Bank operation forwards the messages to the Enterprise Message Bank. The Enterprise Message Bank creates a separate copy of each message in a special Message Bank production. The Enterprise Message Bank is a central repository and can require substantial resources to store and retain messages. Since you can retain messages in the Enterprise Message bank, you may be able to purge them in the originating productions.
The Enterprise Message Viewer and the Enterprise Message Bank have the following differences:
The Enterprise Message Viewer can only query messages which are currently accessible in the namespace message store. If the message has been purged, it is not accessible to the Enterprise Message Viewer. The Enterprise Message Bank contains an independent copy of each message, and the Enterprise Message Bank has retention policies that are independent of the policies on the systems running the business productions. Consequently, even if the original message is purged, the copy can still be available on the Enterprise Message Bank. Maintaining the copies of the messages consumes storage resources.
The Enterprise Message Viewer displays basic information about the message as well as the values in columns specified in the query. You cannot view the complete message or resend a message from the Enterprise Message Viewer. In order to access the message, you can follow a link in the Enterprise Message Viewer and open a Message viewer on the InterSystems IRIS instance running the production. In contrast, the Enterprise Message Bank provides access to the complete message. It is possible to resend a message directly from the Enterprise Message Bank. You cannot resend a message from the Enterprise Message Viewer but can resend a message after following the link to the system running the production.
On the Enterprise Message Viewer system, you must identify and specify credentials for each production that you will be querying for messages. For each production, you provide a name, Web IP address (including port number), namespace, SOAP credentials, and SSL configuration. For details, see Identifying Enterprise Systems for Viewing and Monitoring
. This information enables the Enterprise Message Viewer to find and access the namespace running the production. On the Enterprise Message Bank, you should provide the same information. Although the Enterprise Message Bank can receive messages without knowing the credentials, it cannot resend messages without them.