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Queue name resolution

 

Queue name resolution occurs at every queue manager each time a queue is opened. Its purpose is to identify the target queue, the target queue manager (which may be local), and the route to that queue manager (which may be null). The resolved name has three parts: the queue manager name, the queue name, and, if the queue manager is remote, the transmission queue.

When a remote queue definition exists, no alias definitions are referenced. The queue name supplied by the application is resolved to the name of the destination queue, the remote queue manager, and the transmission queue specified in the remote queue definition. For more detailed information about queue name resolution, see Queue name resolution.

If there is no remote queue definition and a queue manager name is specified, or resolved by the name service, the queue manager looks to see if there is a queue manager alias definition that matches the supplied queue manager name. If there is, the information in it is used to resolve the queue manager name to the name of the destination queue manager. The queue manager alias definition can also be used to determine the transmission queue to the destination queue manager.

If the resolved queue name is not a local queue, both the queue manager name and the queue name are included in the transmission header of each message put by the application to the transmission queue.

The transmission queue used usually has the same name as the resolved queue manager, unless changed by a remote queue definition or a queue manager alias definition. If you have not defined such a transmission queue but you have defined a default transmission queue, then this is used.

Names of queue managers running on z/OS are limited to four characters.

 

Parent topic:

What are aliases?

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