How to remove entries from MQLIST display panel?

Products

• SYSVIEW Performance Management

Issue/Introduction

We have several old started tasks that are no longer running on our systems but they still show up on the MQLIST screen in SYSVIEW. How do we get this out of the list? 

Resolution

The MQLIST command gets the MQ subsystems from the SubSystem Vector Table (SSVT). In order to not see an old MQ Subsystem in the list returned by MQLIST, the MQ subsystem should not be in the SSVT.

If you want to delete the old MQ Subsystem, delete it from SSVT using the SYSVIEW command:  SUBSYS.  This command can be used to display information about subsystems, and from the list use the DELETE sub-command to delete subsystems.

Note that the deleted entries will not show, until the next  IPL. Once the system is IPL’d the entry will be back.

In order to delete it permanently, if it is truly no longer used, the proper and permanent place to delete it from is the MVS parmlib member IEFSSNxx.  This is the member where the MVS subsystems are defined.