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MQSeries.net Forum Index » WebSphere Message Broker (ACE) Support » Suggestions on how to debug zero byte message output

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KIT_INC
PostPosted: Fri May 21, 2010 7:00 am    Post subject: Suggestions on how to debug zero byte message output Reply with quote

Knight

Joined: 25 Aug 2006
Posts: 589

I am running WMB V61 CSD 7 on WINXP. My message flow is outputing a zero byte message with no error indication anywhere. I attached a trace node in front of the MQOutput node. In the trace node, I can see the properties folder, the MQMD folder and the MRM folder. The MRM fields defined in the message definition are all there. All fileds are either integer or character. Character fields are all fixed length. Everything seems OK except that some character fields has length shorter than the fixed length specified. But the message defintion has padding character specified for every character field. Should I expect the padding to happen at the time when the message is written ? or should I expect the padding already done and can be seen in the trace node ?
I am not sure what and where else I should look for other hints.
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smdavies99
PostPosted: Fri May 21, 2010 9:07 am    Post subject: Reply with quote

Jedi Council

Joined: 10 Feb 2003
Posts: 6076
Location: Somewhere over the Rainbow this side of Never-never land.

I'd enable usertrace and then grep the output for NULL as a starting point.
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Every time you reinvent the wheel the more square it gets (anon). If in doubt think and investigate before you ask silly questions.
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mqjeff
PostPosted: Fri May 21, 2010 9:51 am    Post subject: Reply with quote

Grand Master

Joined: 25 Jun 2008
Posts: 17447

I'd confirm that the field type values on the tracenode output are the correct field types for an MRM message.

I'd confirm that the last child of Root is actually the MRM tree.

Then I'd look at the user trace.
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