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REFRESH CLUSTER

 

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

There are two forms of this command using the REPOS parameter.

Using REFRESH CLUSTER(clustername) REPOS(NO) provides the default behavior. The queue manager will retain knowledge of all cluster queue manager and cluster queues marked as locally defined and all cluster queue managers that are marked as full repositories. In addition, if the queue manager is a full repository for the cluster it will also retain knowledge of the other cluster queue managers in the cluster. Everything else will be removed from the local copy of the repository and rebuilt from the other full repositories in the cluster. Cluster channels will not be stopped if REPOS(NO) is used, a full repository will use its CLUSSDR channels to inform the rest of the cluster that it has completed its refresh.

Using REFRESH CLUSTER(clustername) REPOS(YES) specifies that in addition to the default behavior, objects representing full repository cluster queue managers are also refreshed. This option may not be used if the queue manager is itself a full repository. If it is a full repository, first alter it so that it is not a full repository for the cluster in question. The full repository location will be recovered from the manually defined CLUSSDR definitions. After the refresh with REPOS(YES) has been issued the queue manager can be altered so that it is once again a full repository, if required.

We can issue REFRESH CLUSTER(*). This refreshes the queue manager in all of the clusters it is a member of. If used with REPOS(YES) this has the additional effect of forcing the queue manager to restart its search for full repositories from the information in the local CLUSSDR definitions, even if the CLUSSDR connects the queue manager to several clusters.

 

Parent topic:

WebSphere MQ commands for work with clusters

qc11180_

 

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