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| No message larger than 1k? |
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| tessmonsta |
 Posted: Mon Mar 06, 2006 6:33 am Post subject: No message larger than 1k? |
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Apprentice
Joined: 06 Mar 2006
Posts: 29
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I have a client that's using WebSphere MQ Express 5.3. His company is trying to send messages to one of their clients across a secure channel. The problem is, their messages keep getting truncated to 1024 bytes.
We've already changed the MAXMSGL of the queues and channels to the allowed limit for MQ Express, this did not have an effect. I began to suspect the application they were using to post messages (written in .NET so the BufferSize shouldn't be an issue). So I had them construct a local queue, and use the MMC put test message utility to but a message larger than 1k. Again, the messages were trunctated to 1024 bytes.
We're about to run out of ideas, can anyone help?
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| wschutz |
| Posted: Mon Mar 06, 2006 6:55 am Post subject: |
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Jedi Knight
Joined: 02 Jun 2005
Posts: 3316
Location: IBM (retired)
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Well. MQ will not truncate the message ever on the "mqput" side ... it will either put the entire message or return a code saying the message is to big (or put the message to the DLQ if its larger than the channel can handle (not for client though) )....
How do you know how big the message is? Is it possible your "getting" program is truncating the message (ACCEPT_TRUNCATED_MSG) ?
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| tessmonsta |
| Posted: Mon Mar 06, 2006 6:56 am Post subject: |
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Apprentice
Joined: 06 Mar 2006
Posts: 29
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We were using the MMC to read the size of the messages while they were still on the queue. We also performed a browse using the amqsbcg utility. I don't see how the messages could be truncated with either of those.
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"If you meet the Buddha, kill the Buddha." - Lin Chi |
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| wschutz |
| Posted: Mon Mar 06, 2006 7:28 am Post subject: |
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Jedi Knight
Joined: 02 Jun 2005
Posts: 3316
Location: IBM (retired)
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| Quote: |
| So I had them construct a local queue, and use the MMC put test message utility to but a message larger than 1k |
So you used the MMC to generate a message > 1024 bytes and it was still truncated?
I don't use MMC much, so I know know about any limitations there, but I'd suggest using amqsblst to put a large message to your queue and then see what happens:
| Code: |
amqsblst -b 2096 -c 1 QUEUE QMGR
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-wayne |
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| EddieA |
| Posted: Mon Mar 06, 2006 11:00 am Post subject: |
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Jedi
Joined: 28 Jun 2001
Posts: 2453
Location: Los Angeles
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| Quote: |
| I don't see how the messages could be truncated with either of those. |
Very easily. If the code is written to accept Truncated messages.
From memory, amqsbcg doesn't do that, but you can easily check, as the source code is provided.
As far as the MMC snap-in goes, that definitely will truncate data when it gets to a certain size when viewing.
Cheers,
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Eddie Atherton
IBM Certified Solution Developer - WebSphere Message Broker V6.1
IBM Certified Solution Developer - WebSphere Message Broker V7.0 |
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