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MQSeries.net Forum Index » IBM MQ API Support » Issue with MQ CorrelationID

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indrakshi
PostPosted: Tue Aug 31, 2010 8:32 pm    Post subject: Issue with MQ CorrelationID Reply with quote

Newbie

Joined: 11 Dec 2002
Posts: 4
Location: Virginia
We have a weird issue with correlationID. Our application sends a request with mq generated correlID to the client system. A response is sent bank with same correlID. App process the response based on correlID. This suddenly stopped working. Upon tracing we see that the correlID as seen at the app is different from the correlID seen on MQ Queue. And its consistenly off by 1 in hex. App doesn't pick up the response which comes back with correlID that was seen on MQ.

For example: App shows request's correl ID as 414D5120514D4E5058554154202020204C622E1429EE260E

On MQ queue, we see request's correl ID as
414D5120514D4E5058554154202020204C622E1429EE260D

Response from client's system comes back with a correlID of
414D5120514D4E5058554154202020204C622E1429EE260D

Tried a few things but can't get this to work. Any help here is much appreciated.
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fjb_saper
PostPosted: Tue Aug 31, 2010 8:50 pm    Post subject: Reply with quote

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
If you are setting the correlation Id or having MQ set it, make sure you retrieve it from the message after the send method or put call.

If this does not match what you see in the queue (use MO71 or RFHUtil) open a PMR and let us know.

Have fun
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Vitor
PostPosted: Wed Sep 01, 2010 4:15 am    Post subject: Re: Issue with MQ CorrelationID Reply with quote

Grand High Poobah

Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
indrakshi wrote:
Tried a few things but can't get this to work. Any help here is much appreciated.


Did this ever work? If it's just stopped what changed?

Is whatever's sending the reply using the correl id you're supplying or (as is common practice) using your request's message id as the reply correl id?
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Insanity is the best defence.
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indrakshi
PostPosted: Wed Sep 01, 2010 6:17 am    Post subject: Reply with quote

Newbie

Joined: 11 Dec 2002
Posts: 4
Location: Virginia
It worked before. Trying to figure out what changed.

Responding application is copying the correlID we supplied and sending back. Not using request's messageID as the correlID
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