Dispatcher situation

The single predefined situation in this category monitors CICS attempts to dispatch tasks.

Note:
All the attribute names in this group are prefixed with CICSplex_Dispatcher_TCB_Pools, except where stated.
CICSplex_AtMaxTCB_Critical
Critical threshold exceeded for currently attached TCBs in the named dispatcher pool.

This situation compares the number of currently attached TCBs within a dispatcher pool against the defined maximum value. If the situation is true, consider increasing the number of TCBs that can be attached in the pool (check CICS parameters MAXOPENTCBs, MAXSSLTCBs, MAXXPTCBs and MAXJVMTCBs). Also check the transaction analysis reports to ensure that transactions are completing in a timely manner and therefore freeing their allocated TCBs.

Note:
Increasing the number of TCBs that can be attached within a dispatcher pool may have implications for CICS storage use, which can be monitored using the storage analysis reports.

Formula

If the value of Current_TCBs_Attached is greater than or equal to Maximum_TCBs
then situation CICSplex_AtMaxTCB_Critical is true.

See also the CICSplex Dispatcher Summary attribute group.