Updating the policy data set

To add the XBM structure entries to your CFRM policy, you submit JCL that runs the administrative data utility that updates your policy data set.

You include the syntax for the XBM entries in this JCL. The following figures show examples of these XBM entries. Ensure that your structure names match those shown in the examples.

Important

Specify the structure size in 1-KB blocks.

Related topic

Adding-required-structures-to-the-CFRM-policy


Sample XBM structure entries for CFRM Policy (without INITSIZE parameter)

STRUCTURE NAME(XBMGROUP_CACHE1)
SIZE(204800)
PREFLIST(CFNAME1,CFNAME2)

STRUCTURE NAME(XBMGROUP_LIST1)
SIZE(34816)
PREFLIST(CFNAME1,CFNAME2)

XBMGROUP is the name of the cross-system coupling facility (XCF) group that XBM joins upon initialization. You specify this name on the PSS Options subpanel.

The following figure shows an example of the XBM structure entries. The example uses the INITSIZE parameter. Using the INITSIZE parameter in your CFRM policy will cause dynamic expansion. Using XBM with dynamic expansion can cause a delay to the Db2 write, which in turn might cause the Db2 buffer pools to back up.

Sample XBM structure entries for CFRM policy (with INITSIZE parameter)

STRUCTURE NAME(XBMGROUP_CACHE1)
INITSIZE(104448)
SIZE(204800)
PREFLIST(CFNAME1,CFNAME2)

STRUCTURE NAME(XBMGROUP_LIST1)
INITSIZE(5120)
SIZE(34816)
PREFLIST(CFNAME1,CFNAME2)

Important

We recommend that you do not use the INITSIZE parameter.

For detailed information about the syntax of policy entries and the procedure to use when submitting JCL for policy updates, see the IBM MVS/ESA Setting Up a Sysplex document.


 

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