Caché Data Integrity Guide
Contents
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Preface : 
 
 
Chapter 1: 
  1.1 Fundamental Data Integrity Protection
1.2 Integrity Verification and Recovery Mechanisms
1.3 Verifying Structural Integrity
1.3.1 Integrity Check False Positives
1.3.2 Integrity Check Output
1.3.3 Checking Database Integrity Using the Management Portal
1.3.4 Checking Database Integrity Using the ^Integrity Utility
Chapter 2: 
  2.1 Write Image Journaling
2.1.1 Write Image Journal (WIJ)
2.1.2 Two-Phase Write Protocol
2.2 Recovery
2.2.1 WIJ Restore
2.2.2 WIJ Block Comparison
2.3 Limitations of Write Image Journaling
Chapter 3: 
  3.1 Backup Integrity and Recoverability
3.2 Importance of Journals
3.3 Backup Strategies
3.3.1 External Backup
3.3.2 Caché Online Backup
3.3.3 Cold Backup
3.3.4 Legacy Concurrent External Backup
3.4 Restoring from a Backup
3.4.1 Backup Restore Scenarios
3.4.2 Starting Caché for Maintenance
3.4.3 Journal Restore Following Backup Restore
3.4.4 Starting Caché Without Automatic WIJ and Journal Recovery
3.5 Configuring Caché Online Backup Settings
3.5.1 Define Database Backup List
3.5.2 Configure Backup Tasks
3.5.3 Schedule Backup Tasks
3.6 Managing Caché Online Backups
3.6.1 Run Backup Tasks
3.6.2 View Backup Status
3.6.3 Abort a Running Backup
3.6.4 View Backup History
3.7 Caché Online Backup Utilities
3.7.1 Estimate Backup Size Using ^DBSIZE
3.7.2 Perform Backup and Restore Tasks Using ^BACKUP
3.7.3 Back Up Databases Using ^DBACK
3.7.4 Edit/Display List of Directories for Backup Using ^BACKUP
3.7.5 Abort a Running Backup Using ^BACKUP
3.7.6 Display Information About a Backup Volume Using ^BACKUP
3.7.7 Monitor Backup or Restore Progress Using ^BACKUP
3.8 Caché Online Backup Restore Utility
3.8.1 Restore All Databases Using ^DBREST
3.8.2 Restore Selected or Renamed Databases Using ^DBREST
3.8.3 Restoring Databases Using the Backup History
3.8.4 Unattended Restore Using ^DBREST
3.8.5 Mirrored Database Considerations
Chapter 4: 
  4.1 Journaling Overview
4.1.1 Differences Between Journaling and Write Image Journaling
4.1.2 Protecting Database Integrity
4.1.3 Automatic Journaling of Transactions
4.1.4 Rolling Back Incomplete Transactions
4.1.5 Consequences of Not Journaling Databases
4.1.6 The Journal Write Cycle
4.1.7 Journal Files and Journal History Log
4.1.8 Using Temporary Globals and CACHETEMP
4.1.9 Journal Management Classes and Globals
4.2 Configuring Journaling
4.2.1 Enabling Journaling
4.2.2 Journal File Naming
4.2.3 Journaling Best Practices
4.2.4 Configuring Journal Settings
4.3 Journaling Operation Tasks
4.3.1 Start Journaling
4.3.2 Stop Journaling
4.3.3 View Journal Files
4.3.4 Switch Journal Files
4.3.5 Switch Journal Directories
4.3.6 Display Journal File Profiles
4.3.7 Check Journal File Integrity
4.3.8 View Journal File Summaries
4.3.9 Purge Journal Files
4.3.10 Purging Mirror Journal Files
4.3.11 Restore Journal Files
4.4 Journaling Utilities
4.4.1 Perform Journaling Tasks Using ^JOURNAL
4.4.2 Recover from Startup Errors Using ^STURECOV
4.4.3 Convert Journal Files Using ^JCONVERT and ^%JREAD
4.4.4 Set Journal Markers Using ^JRNMARK
4.4.5 Manipulate Journal Files Using ^JRNUTIL
4.4.6 Manage Journaling at the Process Level Using %NOJRN
4.5 Journal I/O Errors
4.5.1 Journal Freeze on Error Setting is No
4.5.2 Journal Freeze on Error Setting is Yes
4.5.3 Impact of Journal Freeze on Error Setting on Transaction Rollback with TROLLBACK
4.6 Special Considerations for Journaling
4.6.1 Performance
4.6.2 UNIX® File System Recommendations
4.6.3 System Clock Recommendations
4.6.4 Disabling Journaling for Filing Operations
Chapter 5: 
  5.1 Shadowing Overview
5.2 Configuring Shadowing
5.2.1 Configuring the Source Database Server
5.2.2 Configuring the Destination Shadow
5.3 Managing and Monitoring Shadowing
5.3.1 Shadow States and Actions
5.3.2 Shadow Processing Considerations
5.3.3 Shadow Checkpoints
5.3.4 Shadow Administration Tasks
5.3.5 Shadow Operations Tasks
5.4 Using Shadowing for Disaster Recovery
5.4.1 Planned Production Transfer to the Shadow Destination
5.4.2 Disaster Recovery Using the Shadow Destination
Chapter 6: 
  6.1 Journaling on Clusters
6.1.1 Cluster Journal Log
6.1.2 Cluster Journal Sequence Numbers
6.2 Cluster Failover
6.2.1 Cluster Recovery
6.2.2 Cluster Restore
6.2.3 Failover Error Conditions
6.3 Cluster Shadowing
6.3.1 Configuring a Cluster Shadow
6.3.2 Cluster Shadowing Limitations
6.4 Tools and Utilities
6.5 Cluster Journal Restore
6.5.1 Perform a Cluster Journal Restore
6.5.2 Generate a Common Journal File
6.5.3 Perform a Cluster Journal Restore after a Backup Restore
6.5.4 Perform a Cluster Journal Restore Based on Caché Backups
6.6 Journal Dump Utility
6.7 Startup Recovery Routine
6.8 Setting Journal Markers on a Clustered System
6.9 Cluster Journal Information Global
6.10 Shadow Information Global and Utilities
Chapter 7: 
  7.1 DataCheck Overview
7.1.1 DataCheck Queries
7.1.2 DataCheck Jobs
7.1.3 DataCheck Results
7.1.4 DataCheck Workflow
7.2 DataCheck for Mirror Configurations
7.2.1 Planning DataCheck within the Mirror
7.2.2 Selecting Globals to Check
7.3 DataCheck Setup Procedure
7.3.1 Enabling the DataCheck Service
7.3.2 Specifying Globals and Subscript Ranges to Check
7.4 ^DATACHECK Routine
7.4.1 Create New Configuration
7.4.2 Edit Configuration
7.4.3 View Details
7.4.4 Incoming Connections to this System as a DataCheck Source
7.5 Special Considerations for Data Checking
7.5.1 Performance Considerations
7.5.2 Security Considerations