Issue the REFRESH CLUSTER command from a queue manager to discard all locally held information about a cluster. You are unlikely to need to use this command, except in exceptional circumstances.

There are three forms of this command:

The default. The queue manager retains knowledge of all locally defined cluster queue manager and cluster queues and all cluster queue managers that are full repositories. In addition, if the queue manager is a full repository for the cluster it also retains knowledge of the other cluster queue managers in the cluster. Everything else is removed from the local copy of the repository and rebuilt from the other full repositories in the cluster. Cluster channels are not stopped if REPOS(NO) is used. A full repository uses its CLUSSDR channels to inform the rest of the cluster that it has completed its refresh.
In addition to the default behavior, objects representing full repository cluster queue managers are also refreshed. It is not valid to use this option if the queue manager is a full repository, if used the command will fail with an error AMQ9406/CSQX406E logged. If it is a full repository, you must first alter it so that it is not a full repository for the cluster in question. The full repository location is recovered from the manually defined CLUSSDR definitions. After refreshing with REPOS(YES) has been issued the queue manager can be altered so that it is once again a full repository, if required.
Refreshes the queue manager in all the clusters it is a member of. If used with REPOS(YES) REFRESH CLUSTER(*) has the additional effect of forcing the queue manager to restart its search for full repositories from the information in the local CLUSSDR definitions. The search takes place even if the CLUSSDR channel connects the queue manager to several clusters.
Note: Use of the REFRESH CLUSTER command can be disruptive to the cluster while it is in progress, for example by creating a sudden increase in work for the full repositories as they process the repropagation of a queue manager cluster resources. For such reasons it is best to avoid use of the command in day-to-day work if possible and use alternative methods to correct specific inconsistencies.