DISPLAY CLUSQMGR displays a queue manager twice

Use the RESET CLUSTER command to remove all traces of an old instance of a queue manager. 

1 : display clusqmgr(QM1) qmid
AMQ8441: Display Cluster Queue Manager details.
CLUSQMGR(QM1)                           CLUSTER(DEMO)
CHANNEL(DEMO.QM1)                       QMID(QM1_2002-03-04_11.07.01)
AMQ8441: Display Cluster Queue Manager details.
CLUSQMGR(QM1)                           CLUSTER(DEMO)
CHANNEL(DEMO.QM1)                       QMID(QM1_2002-03-04_11.04.19)
The cluster functions correctly with the older version of the queue manager being ignored. After about 90 days, the cluster's knowledge of the older version of the queue manager expires, and is deleted automatically. However you might prefer to delete this information manually.


Cause

  1. The queue manager might have been deleted and then re-created and redefined.
  2. It might have been cold-started on z/OS, without first following the procedure to remove a queue manager from a cluster.


Solution

To remove all trace of the queue manager immediately use the RESET CLUSTER command from a full repository queue manager. The command removes the older unwanted queue manager and its queues from the cluster. 
2 : reset cluster(DEMO) qmid('QM1_2002-03-04_11.04.19') action(FORCEREMOVE) queues(yes)
AMQ8559: RESET CLUSTER accepted.

Use the RESET CLUSTER command stops auto-defined cluster sender channels for the affected queue manager. We must manually restart any cluster sender channels that are stopped, after completing the RESET CLUSTER command.

Parent topic: Queue manager clusters troubleshooting