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| Monk |
 Posted: Wed Dec 19, 2007 11:29 pm Post subject: Queue manager runs out of log space |
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Master
Joined: 21 Apr 2007
Posts: 282
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Hi All,
I m having a issue with Log space running out.
I m running WMQ v5.3 CSD 12 on aix
First thing is i do not make my message persistence in any way . In any way I mean Not in MQMD or my message flows(yes i m using MB also).
queues are configured to be non-persistence.
and I do not use syncpoints or anything of that sort.
I have enabled circular logging
Even after all this. I get out of log space error.
I cannot decide on logfile size or the number because my message sizes vary from 1KB to 100 GB( i knw its ridiculous, but its true).
How do I make the QM to handle a situation like this.?
Thanks a lot in advance.
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Thimk |
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| AkankshA |
| Posted: Thu Dec 20, 2007 1:13 am Post subject: |
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Grand Master
Joined: 12 Jan 2006
Posts: 1494
Location: Singapore
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| Quote: |
| (yes i m using MB also). |
How big is your bar file??? large bar files or heavy flows also contribute for this error
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| Monk |
| Posted: Thu Dec 20, 2007 1:37 am Post subject: |
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Master
Joined: 21 Apr 2007
Posts: 282
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my bar files are jsut few 100 KBs
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Thimk |
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| Nigelg |
| Posted: Thu Dec 20, 2007 3:29 am Post subject: |
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Grand Master
Joined: 02 Aug 2004
Posts: 1046
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| Quote: |
| How do I make the QM to handle a situation like this.? |
I do not quite see what this has to do with the qmgr.
Do you mean to ask
| Quote: |
How do I make my apps/system/architecture handle a situation like this? |
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MQSeries.net helps those who help themselves.. |
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| jefflowrey |
| Posted: Thu Dec 20, 2007 4:01 am Post subject: Re: Queue manager runs out of log space |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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| Monk wrote: |
| I cannot decide on logfile size or the number because my message sizes vary from 1KB to 100 GB( i knw its ridiculous, but its true). |
The common wisdom says "make the log files *as big as possible*, so that you never run out of space". This follows from the principle "disk space is cheaper than downtime".
One single badly acting application, however, can use up any amount of log space. So the common wisdom is good, and correct, but not foolproof.
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| PeterPotkay |
| Posted: Thu Dec 20, 2007 5:32 pm Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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Monk, MQ Log Files are used for things other than housing Persistent messages. Like keeping track of transactions (Syncpoint = Yes). And if those transactions are left open for a very long time, while other transactions come and go, that long running transaction keeps the original log from being overwritten until the transaction finishes. Or you run out of log space.
Make your logs bigger.
Make your units of work smaller in size and shorter in duration.
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Peter Potkay
Keep Calm and MQ On |
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