RCL-INTERNAL-MAINTENANCE version entry

IBM i operating system makes use of registered version information entries to enable enhancements to Db2 Mirror for i that require coordination of specific features or functions across both nodes. A version information entry that contains MRDB for its version group and RCL-INTERNAL-MAINTENANCE for its version name is used to enable features related to the Replication Criteria List (RCL).

Use the following SQL to display the highest registered version value that is available on both nodes for the RCL-INTERNAL-MAINTENANCE version information entry:

SELECT ACTIVE_VERSION, ENTRY_SOURCE, 
       VERSION_GROUP, VERSION_NAME, 
       PRIMARY_VERSION, SECONDARY_VERSION
    FROM QSYS2.MIRROR_VERSION_LIST
    WHERE STATE         = 'ACTIVE' AND
          VERSION_GROUP = 'MRDB' AND
          VERSION_NAME  = 'RCL-INTERNAL-MAINTENANCE';

For complete details on viewing registered version information entries stored in the Mirror Version List (MVL), view the IBM Documentation page: MIRROR_VERSION_LIST view.

NOTE:  A PTF of Base indicates that the version for the enhancement is enabled in the base release. Base Enhanced indicates that the version for the enhancement was enabled in the base release without any additional PTFs.

• Active version:  1.1
• Version group:  MRDB
• Version name:  RCL-INTERNAL-MAINTENANCE

Version 1.1 introduces support to improve performance while Db2 Mirror is attempting to make use of the Replication Criteria List (RCL) to determine when an object is included in replication. The enhancement includes caching of active rules within the RCL in an attempt to improve performance while checking the replication inclusion state for an object. For complete details on how RCL rules are used to determine an objects replication inclusion state, view the IBM Documentation page: CHECK_REPLICATION_CRITERIA scalar function.

The enhancements for this version are enabled after the following Db2 Mirror for i and Db2 for i PTF Groups are loaded and applied:

• IBM i 7.5 - [SF99951 Level 6 and SF99950 Level 7]
• IBM i 7.4 - [SF99668 Level 24 and SF99704 Level 28]

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