CICS transaction manager: Performance and tuning

The CICS® Transaction Manager domain provides transaction-related services.

The services provided by the domain are used to:
  • Create tasks
  • Terminate tasks
  • Purge tasks
  • Inquire on tasks
  • Manage transaction definitions
  • Manage transplants definitions
The transaction manager domain also provides a transaction environment to enable other CICS components to implement transaction-related services.

Optimizing transaction-related services involves setting appropriate limits for concurrent running tasks, controlling task dispatches, for example, through the TRANCLASS mechanism, and monitoring the Transaction Manager domain.

Transaction statistics help you monitor the CICS Transaction Manager domain.