Duplicate cluster members


Warning icon Cluster membership lists show queue manager <queue manager name> twice in the same cluster <cluster name>

The queue manager might have been deleted, then re-created, and redefined, or it might have been cold started on z/OS.

The cluster functions correctly. It ignores the older version of the queue manager until the cluster membership of the older version of the queue manager expires after about 90 days. To remove the queue manager immediately, use the RESET CLUSTER command from a full repository queue manager to remove the older unwanted queue manager and its queues from the cluster. Use the RESET CLUSTER command only in exceptional circumstances.

IBM MQ Queue Manager Clusters provides further information about the RESET CLUSTER command, and about troubleshooting cluster problems.