Stopping and restarting management of a CICS system

You can stop and restart management of a MAS in an active CICS® system. You can also check that MAS shutdown processing is properly installed.

Stopping management of a CICS system

You can stop the MAS agent code in an active CICS system in several ways:
  • From the WUI main menu, click CICSPlex SM operations > MASs known to CICSplex, select the CICS systems, and click Stop.
  • Run transaction COSH in the MAS. You start COSH at a 3270 terminal, at a console, or using ATI.

When you stop the MAS agent, CICSPlex® SM cannot access the MAS until either the CICS system is restarted (see Preparing to start a MAS) or the COLM or CORM transaction is issued.

When a MAS is active as a CICSPlex SM workload management routing region, and the dynamic routing program is set to EYU9XLOP, the STOP command is not run. In this situation, before you issue the STOP command, you must use the WUI CICS regions operations view to change the dynamic routing program from EYU9XLOP to the CICS default dynamic routing program, DFHDYP, or another valid dynamic routing program.

Note: 6.2 and later If PERFORM SHUTDOWN or PERFORM SHUTDOWN IMMEDIATE is issued against a MAS, CICS stops the MAS agent code as part of the shutdown process.

Verifying MAS shutdown

To verify that the CICSPlex SM SM MAS shutdown processing is properly installed, you can end the CICS system and check the log for the following shutdown message.
  EYUXL0016I  MAS shutdown complete
To end a CICS system running the MAS agent code, follow these steps:
  1. From the WUI main menu, click CICS regions.
  2. Select one or more CICS systems.
  3. Click Shutdown.

Restarting management of a CICS system

To reactivate a running CICS system as a MAS, issue the CICS COLM transaction.

If you want a local MAS to be recognized as a workload management routing region when CICSPlex SM resumes managing the system, set the dynamic routing program to EYU9XLOP. To change the dynamic routing program, use the CICS CEMT transaction before you reactivate the local MAS.