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Triggering

 

A triggered shared queue can generate more than one trigger message for a satisfied trigger condition. There is one trigger message generated for each local initiation queue defined on a queue manager in the queue-sharing group associated with the triggered shared queue.

In the case of distributed queuing, each channel initiator receives a trigger message for a satisfied shared transmission queue trigger condition. However, only one channel initiator will actually process the triggered start, and the others will fail safely. The triggered channel is then started with a load balanced start (see Load-balanced channel start) that will be triggered to start channel QSG.TO.QM2. To create a shared transmission queue, use the WebSphere MQ commands (MQSC) as shown in the following example:

DEFINE QLOCAL(QM2) DESCR('Transmission queue to QM2') +
USAGE(XMITQ) QSGDISP(SHARED) +
CFSTRUCT(APPLICATION1) INITQ(SYSTEM.CHANNEL.INITQ) +
TRIGGER TRIGDATA(QSG.TO.QM2)

 

Parent topic:

Transmission queues and triggering

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