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| Correlation Id |
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| JUMPINJACK |
 Posted: Wed Nov 05, 2003 4:13 am Post subject: Correlation Id |
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Newbie
Joined: 15 Oct 2003
Posts: 3
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| Hello again...many thanks for your reply on my previous query (we have lift off) things are moving on now...the query I have now is how to prevent a Correlation Id being returned in the Reports for COA, COD and EXP..regards JJ |
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| vmcgloin |
| Posted: Wed Nov 05, 2003 4:38 am Post subject: |
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Knight
Joined: 04 Apr 2002
Posts: 560
Location: Scotland
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| I don't think you can. I would expect the CorrelId in these cases to be the MessageId of the original message. Why do you want to prevent it? |
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| JUMPINJACK |
| Posted: Wed Nov 05, 2003 6:17 am Post subject: |
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Newbie
Joined: 15 Oct 2003
Posts: 3
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At my current place of employment they do not use any report feedback and this is what I am trying to implement into the existing infrastructure. As far as I can gather the existing stuff seems not to be able to handle correlation Id just message Id's (do's that make any sense!)...also I need to read the messages using keys and at present looking around (manuals) to discover how this can also be done....
I know the above may seem back to basic stuff but I have been set this task and treating this as a challenge to become fimilair and more confident in using MQ(since I am relatively new to MQ).
In general: I am trying to create more resilence to the system and implement something that when a definition of a failure as occurred to re-direct all traffic to another Q manager.
The overall picture is that I am trying (as stated previously) implement the various report feedbacks. If the reports result in an error i.e COA fails. COD fails and EXP report (indicating an error has occurred) then I will treat this as a my definition of a failure (along with a time out). I will then need to modify the existing code as to transfer all proceesing to another queue manager (which will mirror the exisiting setup).
Hope the above makes a little bit of sense and look forward to hearing from yourselves...once again many thanks JJ |
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| PeterPotkay |
| Posted: Wed Nov 05, 2003 8:49 am Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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Jack I'm still not clear exactly why you are trying to do what your are trying, but no matter.
In the MQMD, their is a field called Report Options. In that field, along with asking for COAs and CODs and etc, you can tell the other side (the receiving QM in this case) how you want the Message IDs and CorrelIDs handled.
http://publibfp.boulder.ibm.com/epubs/html/csqzak09/csqzak09tfrm.htm
Go to Chapter 10 and look for the Report field.
If you set the option MQRO_PASS_CORREL_ID, and have a nulls correl ID on the request message, your report message will have the same (nulls).
If you want the original Message ID of the Request in the Report (not recomended, but possible), then also set MQRO_PASS_MSG_ID.
_________________
Peter Potkay
Keep Calm and MQ On |
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