Recovery from media images

WebSphere MQ automatically recovers some objects from their media image if it is found that they are corrupt or damaged. In particular, this applies to the special *MQM and *CTLG objects as part of the normal queue manager startup. If any syncpoint transaction was incomplete at the time of the last shutdown of the queue manager, any queue affected is also recovered automatically, in order to complete the startup operation.

You must recover other objects manually, using the WebSphere MQ command

RCRMQMOBJ. This command replays the entries in the journal to recreate the WebSphere MQ object. Should a WebSphere MQ object become damaged, the only valid actions are to delete it or recreate it by this method. Note, however, that nonpersistent messages cannot be recovered in this fashion.