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| why messages sent to xmtq go to dead letter queue ? |
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| pepgrifell |
 Posted: Wed Apr 07, 2004 12:41 am Post subject: why messages sent to xmtq go to dead letter queue ? |
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Novice
Joined: 13 Nov 2003
Posts: 14
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hello,
I have an application that access mqseries via jms and MDB´s. My application runs in jboss 3.2.3. I found a document to allow MDB´s access mqseries queues (http://sourceforge.net/tracker/index.php?func=detail&aid=753022&group_id=22866&atid=376687).
In integration, my application is in linux. The app. sends a message to a xmitq queue (mqseries 5.1 in AIX) The message is transfered to a remote queue (MQSeries in Windows 2000). Everything goes ok.
The silly thing is that in production, with the same photo (application in linux, my mqseries in AIX and remote mqseries in win 2000) when I send a message (TextMessage with and xml string inside) to the xmitq queue, the message is sent to the dead letter queue. If I check the message in the dead letter queue, the error code attached to the message is a 2110 (Message format not valid).
Has anyone know the reason ? Why in integration environment I can send the message and I cannot do it in production environment if I have exactly the same photo as in itegration environment ?
Thanks ! |
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| jefflowrey |
| Posted: Wed Apr 07, 2004 4:16 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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You never never never write messages directly to a transmit queue. Messages on transmit queues require a custom header that it is a complete waste of time to build yourself. There's just no good reason for writing to a transmit queue directly - unless you're working for IBM.
If you think it is functioning in your integration environment, and you're using JMS, then you aren't writing to a real transmit queue. JMS doesn't provide facilities for building the custom header needed.
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I am *not* the model of the modern major general. |
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| pepgrifell |
| Posted: Wed Apr 07, 2004 5:24 am Post subject: |
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Novice
Joined: 13 Nov 2003
Posts: 14
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Sorry, I was wrong. I have defined a remote queue :
DEFINE QREMOTE(Q.0001.FRONTEND.R) RNAME(ENTEST2.FRONT.ASYNC.RECEPCION) XMITQ(ENTEST2) +
DEFPSIST(YES) RQMNAME(ENTEST2)
DEFINE QALIAS(Q.0001.R) TARGQ(Q.0001.FRONTEND.R)
and I send the messages to this queue. |
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| pepgrifell |
| Posted: Wed Apr 07, 2004 7:23 am Post subject: solved |
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Novice
Joined: 13 Nov 2003
Posts: 14
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The "expert" in MQSeries (the guy who creates the queues and channels) told me that all the queues and channels were defined exactly equal in integration and production, but now has seen that he forgot to put a CONVERT(YES) when defining the channels in production !!!!! And I have lost one day crashing my head to the wall just thinking about which could be the problem !!!
Anyway, thanks for all ! |
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| jefflowrey |
| Posted: Wed Apr 07, 2004 7:26 am Post subject: Re: solved |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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| pepgrifell wrote: |
| The "expert" in MQSeries (the guy who creates the queues and channels) told me that all the queues and channels were defined exactly equal in integration and production, but now has seen that he forgot to put a CONVERT(YES) when defining the channels in production !!!!! And I have lost one day crashing my head to the wall just thinking about which could be the problem !!! |
You might look into recoding your applications so that they all specify the Convert option on the Get (which I think if you read in TextMessages will happen automatically).
Then your MQAdmin will not have to specify Convert(YES) on his channels, and you won't run into data conversion issues if a message takes multiple hops across different platforms before it gets where it's supposed to go. (You might, for example, lose certain characters if your message goes from Unix to EBCDIC to Unicode)
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