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| Correlation ID |
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| carolhara |
 Posted: Tue Feb 03, 2009 10:03 am Post subject: Correlation ID |
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Acolyte
Joined: 02 Oct 2007
Posts: 56
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Hello there!
My question is: when does an application get the correlation ID - on the MQput of a message or on its commit/syncpoint?
Thankss |
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| mqjeff |
| Posted: Tue Feb 03, 2009 10:13 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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The MQMD field is an INOUT parameter of MQPUT.
If you have indicated that you want the qmgr to generate a correlation ID when you do a PUT, then the MQMD that you pass in will be updated. |
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| carolhara |
| Posted: Tue Feb 03, 2009 10:55 am Post subject: |
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Acolyte
Joined: 02 Oct 2007
Posts: 56
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Does the CorrelID guarantee that a message was put into a queue?
Thanks. |
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| mqjeff |
| Posted: Tue Feb 03, 2009 11:08 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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The MQRC from the MQPUT assures you that MQ has accepted the message.
The MQRC from MQCOMMIT assures you that any global units of work have been completed successfully. |
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| bruce2359 |
| Posted: Tue Feb 03, 2009 12:17 pm Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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Like MsgId, CorrelId is an MQMD field. MQMD is the message descriptor that accompanies your application data when MQPUT to a queue or MQGET from a queue.
The MQMD fields contain information about your application data (like format, CCSID, encoding. Refer to the WMQ Application Programming Reference and WMQ Application Programming Guide.
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