z/OS: Queue sharing group coexistence

A queue-sharing group can contain queue managers running on IBM® WebSphere® MQ 7.0.1, and on later releases. The queue managers can access the same shared queues and other shared objects. Queue managers running earlier versions of the product must have the coexistence PTF applied for the latest release.

Note: After the coexistence PTF has been applied, the earlier version queue managers must be started at least once.

A queue-sharing group containing a latest version queue manager, can contain queue managers only at one other, earlier version. You can not start a latest version queue manager in a queue-sharing group that contains other queue managers at more than one other version.

Only run queue managers in a mixed-version queue-sharing group for the time it takes to migrate all queue managers to the later version. If the queue-sharing group contains queue managers with a mixture of versions, new functions on the latest version, that are restricted by OPMODE, will not be available.