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| exception in trace |
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| saram1920 |
 Posted: Thu Jan 08, 2004 7:02 am Post subject: exception in trace |
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Novice
Joined: 23 Sep 2003
Posts: 12
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hi everybody....
I have a doubt in trace node!!!
in the message flow, I have connected the the failure terminal and catch terminal to a trace node and followed with a failure queue.
*** I am trying capture ...Root & ExceptionList in Trace ****
now, my question is ....would there be any exception raised such that....it cannot write it to the trace node. I mean messasge failing in the trace node...and the message get thrown away or so. if so, what sort of exception it would be.
or...at any case, any exception...it will pass through the trace node.
thanx in advance.
saram |
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| kirani |
| Posted: Thu Jan 08, 2004 11:26 am Post subject: |
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Jedi Knight
Joined: 05 Sep 2001
Posts: 3779
Location: Torrance, CA, USA
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saram,
If you print ${Root} in the trace node, WMQI will try to parse the message, and if the message is not correct, WMQI will throw an Exception and the message will roll-back.
It depends on your message flow design to indicate where your message will go in case of failure. Avoid printing ${Root} in your message flow, instead print ${ExceptionList} only. Also, it's a good idea to write failed messages to some queue.
_________________
Kiran
IBM Cert. Solution Designer & System Administrator - WBIMB V5
IBM Cert. Solutions Expert - WMQI
IBM Cert. Specialist - WMQI, MQSeries
IBM Cert. Developer - MQSeries
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| saram1920 |
| Posted: Thu Jan 08, 2004 4:09 pm Post subject: |
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Novice
Joined: 23 Sep 2003
Posts: 12
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Kiran..
Thanks for your reply...
I did'nt get the full answer as such...probably I didnt phrase my question!! properly...
when we write....${ExceptionList} in the trace node, ...it writes the ExceptionList,
so, I was wondering....will there can be any chance that the message fails in trace node....and doesnt write ExceptionList and message gets thrown away!!....
or there cannot be message failed in the trace....no matter what exception, it writes the ExceptionList
do please correct me if I wrong!..
thanks in advance
-saram |
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| kirani |
| Posted: Thu Jan 08, 2004 4:36 pm Post subject: |
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Jedi Knight
Joined: 05 Sep 2001
Posts: 3779
Location: Torrance, CA, USA
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Well, again it depends on what code you have in your Trace node.
| Quote: |
when we write....${ExceptionList} in the trace node, ...it writes the ExceptionList, so, I was wondering....will there can be any chance that the message fails in trace node....and doesnt write ExceptionList and message gets thrown away!!....
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Consider you only have ${ExceptionList} in your trace node. WMQI will never fail when writing this to a file. IF the trace path is invalid, it will log that as a warning message and continue further. If your disk space if full, then I think you have a bigger problem!! Specially if the drive is same as your broker drive (where WMQI is installed).
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or there cannot be message failed in the trace....no matter what exception, it writes the ExceptionList
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That's correct. But, remember that the Trace node is capable of throwing an Exception. Like parsing error (example in my previous post), runtime error, etc.
I hope you got your answer this time!
_________________
Kiran
IBM Cert. Solution Designer & System Administrator - WBIMB V5
IBM Cert. Solutions Expert - WMQI
IBM Cert. Specialist - WMQI, MQSeries
IBM Cert. Developer - MQSeries
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| saram1920 |
| Posted: Thu Jan 08, 2004 8:46 pm Post subject: |
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Novice
Joined: 23 Sep 2003
Posts: 12
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thanks..kiran..
got the answer......now, I'm cleared
-saram |
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