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MQSeries.net Forum Index » IBM MQ API Support » Segmentation In MQ

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ajaykumar
PostPosted: Wed Oct 22, 2008 9:08 pm    Post subject: Segmentation In MQ Reply with quote

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Joined: 20 Sep 2008
Posts: 10
Hi All,
In our project we are using the concept of segmentation if the message exceeds a specified length and set the flag "MQC.MQMF_SEGMENT" for every segment and "MQC.MQMF_LAST_SEGMENT" for the last segment. We even set the flag "MQC.MQMF_LAST_SEGMENT" for messages which are not segmented while putting in the queue. Now the application(installed on HP-UNIX) which picks these messages from the queue was able to get the message which was not segmented but had the flag "MQC.MQMF_LAST_SEGMENT" set. All went on fine but after sometime the application was installed on LINUX and could not pick the messages. We though it my be because the messages in the queue were uncommitted but later we realised that those messages are being picked up applications on UNIX or any other utility. So by hit and trial we though of setting the flags only for messages which are segmented and not for all messages and it worked fine.
Can anyone throw somemore light on this like is it something to do with the OS or there is something more to it.
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zboy
PostPosted: Wed Oct 22, 2008 11:19 pm    Post subject: Reply with quote

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Joined: 01 Oct 2008
Posts: 13
unless you have thoroughly read and understood the section in the APR about the use of the segmentation flags, and from the above it does not appear that you have, you should let the qmgr do the segmenting for you by setting segmentation allowed when putting the complete msg
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