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| Maximum message length vs the message length |
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| jainvik7 |
 Posted: Thu Apr 13, 2006 12:29 am Post subject: Maximum message length vs the message length |
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Apprentice
Joined: 19 Feb 2006
Posts: 38
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Hello All,
This question might sound a bit trivial but i just thought of posting it to clarify my doubt.
When we define the maximum message length of a queue, does that mean --->
application message length (data) + message descriptor. What I mean to ask is do we have to take into account the length of the message descriptor before defining the maxmsglength.
This is what I tried. I defined a queue called TEST (naming convention not followed) and set his maxmslength property to just 4 bytes. I tried putting 4 bytes of data in the queue and it was successfull. I can also see the message descriptor of the message (right click -- > message properties on windows ).
Would appreciate if someone can throw some more light on this or send me some pointers.
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| mvic |
| Posted: Thu Apr 13, 2006 1:18 am Post subject: Re: Maximum message length vs the message length |
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Jedi
Joined: 09 Mar 2004
Posts: 2080
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| wschutz |
| Posted: Thu Apr 13, 2006 1:51 am Post subject: |
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Jedi Knight
Joined: 02 Jun 2005
Posts: 3316
Location: IBM (retired)
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Correct, the maxmsgl parameter doesn't include the MQMD..and..interestingly enough, if you cause a MQMDE to be generated (by using message grouping as an example), the MQMDE that MQ actually puts at the beginning of the message doesn't count either. (At least on my V6.0.0.1 Linux qmgr).
But as the doc says that mvic points to, if there is a chance for a MQDH or MQDLH being placed in the message, you'd be in trouble.
_________________
-wayne |
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| jainvik7 |
| Posted: Thu Apr 13, 2006 3:05 am Post subject: |
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Apprentice
Joined: 19 Feb 2006
Posts: 38
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Thanks mvic/wschutz for your inputs.  |
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