CICSCACHE should normally be set in the TSS PARMFILE. The defaults for this facility option are:
CICSCACHE(TASKLIFE,NOAUDIT,512)
This is adequate for most purposes and provides the maximum resource security with minimum-security file access for most small applications with a small number of secured resources. Should you wish to adjust the cache size, this must be done before starting the CICS region. Although the task size in the facility display will show your altered value, the new cache value will not be implemented until the region is restarted. The options TASKLIFE/SESSLIFE and NOAUDIT/AUDIT may be altered dynamically and take effect immediately.
Note: OPTIONS(28) no longer has any effect on session life and will be overridden by the associated facility CICSCACHE values.
If you need to troubleshoot a problem with support, and you use SESSLIFE caching, be sure to let support know that this is the case. For the purposes of troubleshooting, you may wish to alter CICSCACHE to AUDIT, and to flag your test user with the AUDIT flag, in order to obtain detailed information about the activities of a problem transaction.
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