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| imrakesh |
 Posted: Tue Apr 24, 2012 1:28 pm Post subject: MAXMSGL for Websphere Queue |
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Novice
Joined: 10 Apr 2012
Posts: 10
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Hi,
I had to change max message size to 20mb in one of my local queue.
Is that enough to test or do we need to change the same interms of QM, log size, dead letter queue (whose name is defined in qmgr attributes)
and channel (SDR, RCVR, and XMITQ)
?
Please advice. |
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| mvic |
| Posted: Tue Apr 24, 2012 2:59 pm Post subject: Re: MAXMSGL for Websphere Queue |
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Jedi
Joined: 09 Mar 2004
Posts: 2080
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| imrakesh wrote: |
| Is that enough to test |
Ask your architects, they should know. |
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| bruce2359 |
| Posted: Tue Apr 24, 2012 7:00 pm Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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The size (length) of messages is determined by application developers.
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I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| imrakesh |
| Posted: Tue Apr 24, 2012 7:03 pm Post subject: |
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Novice
Joined: 10 Apr 2012
Posts: 10
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| Okthanks allot...Just to give u an update. I am creating a new channel so that no inpact to others |
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| exerk |
| Posted: Wed Apr 25, 2012 12:27 am Post subject: Re: MAXMSGL for Websphere Queue |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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| imrakesh wrote: |
| ...I had to change max message size to 20mb in one of my local queue. Is that enough to test or do we need to change the same in terms of QM... |
Yes, the queue manager MAXMSGL attribute needs to be the size of the largest message that will traverse the queue manager.
| imrakesh wrote: |
| ...log size... |
The problem you may have is size, especially if the logs were specified for messages significantly smaller than the 20MB messages you will now be moving. If you're using circular logging you can increase the number of logs, if using linear logging you will cut logs faster than you have been previously, so it may be that you will need to rebuild your queue manager with larger logs.
| imrakesh wrote: |
| ...dead letter queue... |
Should always be sized for the largest message that will traverse a queue manager + plus a small overhead.
| imrakesh wrote: |
| ...and channel (SDR, RCVR)... |
As for above.
| imrakesh wrote: |
| ...and XMITQ... |
One little trick on distributed is to set the MAXMSGL on the queue to 0 (zero) and the queue manager MAXMSGL to the required value. That way the queue will automatically pick up the value from the queue manager.
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It's puzzling, I don't think I've ever seen anything quite like this before...and it's hard to soar like an eagle when you're surrounded by turkeys. |
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| PeterPotkay |
| Posted: Wed Apr 25, 2012 7:17 am Post subject: Re: MAXMSGL for Websphere Queue |
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Poobah
Joined: 15 May 2001
Posts: 7722
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| exerk wrote: |
| imrakesh wrote: |
| ...and XMITQ... |
One little trick on distributed is to set the MAXMSGL on the queue to 0 (zero) and the queue manager MAXMSGL to the required value. That way the queue will automatically pick up the value from the queue manager. |
Can you post a reference to the documentation for this? I looked in the InfoCenter in the MQSC manual and don't see this mentioned.
_________________
Peter Potkay
Keep Calm and MQ On |
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| exerk |
| Posted: Wed Apr 25, 2012 7:31 am Post subject: Re: MAXMSGL for Websphere Queue |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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| PeterPotkay wrote: |
| exerk wrote: |
| imrakesh wrote: |
| ...and XMITQ... |
One little trick on distributed is to set the MAXMSGL on the queue to 0 (zero) and the queue manager MAXMSGL to the required value. That way the queue will automatically pick up the value from the queue manager. |
Can you post a reference to the documentation for this? I looked in the InfoCenter in the MQSC manual and don't see this mentioned. |
Peter, more than happy to. You'll find it HERE in the Info Centre; note 4 is where it's hiding.
Oh, it would be so much easier if it was a pdf 
_________________
It's puzzling, I don't think I've ever seen anything quite like this before...and it's hard to soar like an eagle when you're surrounded by turkeys. |
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| Vitor |
| Posted: Wed Apr 25, 2012 7:39 am Post subject: Re: MAXMSGL for Websphere Queue |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| exerk wrote: |
| Oh, it would be so much easier if it was a pdf |
 
Enough with the troll impression. Don't you have a dungeon to clean?
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Honesty is the best policy.
Insanity is the best defence. |
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| exerk |
| Posted: Wed Apr 25, 2012 7:44 am Post subject: Re: MAXMSGL for Websphere Queue |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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| Vitor wrote: |
| exerk wrote: |
| Oh, it would be so much easier if it was a pdf |
Enough with the troll impression. Don't you have a dungeon to clean? |
Might have, might not. I've installed a few new traps and would be happy for you to visit, mwhahahahaha! 
_________________
It's puzzling, I don't think I've ever seen anything quite like this before...and it's hard to soar like an eagle when you're surrounded by turkeys. |
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| PeterPotkay |
| Posted: Wed Apr 25, 2012 10:58 am Post subject: Re: MAXMSGL for Websphere Queue |
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Poobah
Joined: 15 May 2001
Posts: 7722
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| exerk wrote: |
| PeterPotkay wrote: |
| exerk wrote: |
| imrakesh wrote: |
| ...and XMITQ... |
One little trick on distributed is to set the MAXMSGL on the queue to 0 (zero) and the queue manager MAXMSGL to the required value. That way the queue will automatically pick up the value from the queue manager. |
Can you post a reference to the documentation for this? I looked in the InfoCenter in the MQSC manual and don't see this mentioned. |
Peter, more than happy to. You'll find it HERE in the Info Centre; note 4 is where it's hiding.
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That's for the channel. Your original note was about an XMITQ, which I can't find.
_________________
Peter Potkay
Keep Calm and MQ On |
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| exerk |
| Posted: Wed Apr 25, 2012 12:52 pm Post subject: Re: MAXMSGL for Websphere Queue |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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| PeterPotkay wrote: |
| exerk wrote: |
| PeterPotkay wrote: |
| exerk wrote: |
| imrakesh wrote: |
| ...and XMITQ... |
One little trick on distributed is to set the MAXMSGL on the queue to 0 (zero) and the queue manager MAXMSGL to the required value. That way the queue will automatically pick up the value from the queue manager. |
Can you post a reference to the documentation for this? I looked in the InfoCenter in the MQSC manual and don't see this mentioned. |
Peter, more than happy to. You'll find it HERE in the Info Centre; note 4 is where it's hiding.
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That's for the channel. Your original note was about an XMITQ, which I can't find. |
OK, tail between legs time - that'll teach me to actually read what's there 
Peter, thank you for the correction.
_________________
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