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MQSeries.net Forum Index » IBM MQ Installation/Configuration Support » Message segmentation in clustered environment

Message segmentation in clustered environment

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sac

Posted: Tue Jan 04, 2005 10:35 pm Post subject: Message segmentation in clustered environment

Apprentice

Joined: 10 Feb 2003
Posts: 44

Hi,
Am not much aware of MQ clustering concepts. I was having a doubt that in case of segmentation of message in a clustered environment, isn't there a possiblity that message might get distributed to different instance of a same shared queue in cluster. If that is the case, then how do we group the complete message together?

-Thanks

Nigelg

Posted: Wed Jan 05, 2005 12:37 am Post subject:

Grand Master

Joined: 02 Aug 2004
Posts: 1046

If a message put to a cluster queue is segmented by the qmgr into several physical msgs, all these msgs will be sent to the same instance of the queue in the cluster so that they can later be retrieved as a single msg from the queue.

Note that this is NOT the case where msgs are put in a group. It is the repsonsibility of the app to ensure that a group of msgs are all sent to the same instance of a cluster queue, for example by specifying BIND_ON_OPEN when opening the cluster queue, or be specifying the ObjectQMgrName in the MQOD.

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