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 views 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 might have implications for CICS storage use, which can be monitored using the storage analysis views.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.