Addressing information

 

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Overview

In a single-queue-manager environment, the address of a destination queue is established when an application opens a queue for putting messages to. Because the destination queue is on the same queue manager, there is no need for any addressing information.

In a distributed environment the queue manager needs to know not only the destination queue name, but also the location of that queue (that is, the queue manager name), and the route to that remote location (that is, the transmission queue). When an application puts messages that are destined for a remote queue manager, the local queue manager adds a transmission header to them before placing them on the transmission queue. The transmission header contains the name of the destination queue and queue manager, that is, the addressing information. The receiving channel removes the transmission header and uses the information in it to locate the destination queue.

You can avoid the need for your applications to specify the name of the destination queue manager if you use a remote queue definition. This definition specifies the name of the remote queue, the name of the remote queue manager to which messages are destined, and the name of the transmission queue used to transport the messages