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| ggulati2 |
 Posted: Tue Sep 25, 2007 3:00 am Post subject: Large q files |
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Apprentice
Joined: 08 May 2006
Posts: 36
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One of the Queue Manager went down due to FS usage 100 %.I got the disk space increased and started the QMGR.
now,there are soem large "q" files under queues directory but there are NO messages on respective queues.
Could you please tell me how to reduce the size of those q files ? |
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| Vitor |
| Posted: Tue Sep 25, 2007 3:02 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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Are there no messages on the queues, or no committed messages showing in the queue depth?
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| ggulati2 |
| Posted: Tue Sep 25, 2007 3:03 am Post subject: |
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Apprentice
Joined: 08 May 2006
Posts: 36
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| No..CURDEPTH of all related queues is 0. |
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| Vitor |
| Posted: Tue Sep 25, 2007 3:06 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| ggulati2 wrote: |
| No..CURDEPTH of all related queues is 0. |
My question exactly. 
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| ggulati2 |
| Posted: Tue Sep 25, 2007 3:10 am Post subject: |
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Apprentice
Joined: 08 May 2006
Posts: 36
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| CURDEPTH it is showing is 0 for all messages and they all were non-persistant messages.Now I need to reduce the FS usage which is geeting used by respective "q" files of these queues. |
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| Vitor |
| Posted: Tue Sep 25, 2007 3:17 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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Ok, re-reading your post I may be talking rubbish anyway. The point I was making is that uncommitted messages don't always show on the queue depth, so you can in theory have a queue depth of 0 with 5000 messages on it.
But if the messages are non-persistant all bets are off anyway - they shouldn't have survived the crash of the queue manager when the file system filled!
What platform & level of MQ?
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| ggulati2 |
| Posted: Tue Sep 25, 2007 3:27 am Post subject: |
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Apprentice
Joined: 08 May 2006
Posts: 36
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Platform is AIX
MQ version is 6.0.1.1 |
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| Vitor |
| Posted: Tue Sep 25, 2007 3:30 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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Any unusual messages in the queue manager log, or at start up? It should just have bulldozed them flat.... 
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| ggulati2 |
| Posted: Tue Sep 25, 2007 3:39 am Post subject: |
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Apprentice
Joined: 08 May 2006
Posts: 36
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There are few entries in log file like :
1.Queue damaged
2.log records accessed on queue manager 'QMDTSSYS' during the log
replay phase.
3.The Queue Manager task 'STATISTICS' has started |
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| Vitor |
| Posted: Tue Sep 25, 2007 3:41 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| ggulati2 wrote: |
There are few entries in log file like :
1.Queue damaged
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That sounds like the cause of your woes. Check the affected queues for damage, repair if possible, delete & recreate if necessary
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| bbburson |
| Posted: Tue Sep 25, 2007 5:37 am Post subject: |
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Partisan
Joined: 06 Jan 2004
Posts: 378
Location: Nowhere near a queue manager
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| Vitor wrote: |
| . . . uncommitted messages don't always show on the queue depth, so you can in theory have a queue depth of 0 with 5000 messages on it. |
Huh? From the MQSC reference manual:
| Code: |
CURDEPTH
The current depth of the queue, that is, the number of messages on the queue. This includes both committed messages and uncommitted messages. |
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| Vitor |
| Posted: Tue Sep 25, 2007 6:07 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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Not if the UOW is still in flight, you can't rely on it. Also if a channel is indoubt it's a bit funky. But in this case it wasn't a particulally likely scenario in hindsight.
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| Nigelg |
| Posted: Tue Sep 25, 2007 6:44 pm Post subject: |
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Grand Master
Joined: 02 Aug 2004
Posts: 1046
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Stop and restart the qmgr. Queue files are truncated at the checkpoint taken at qmgr shutdown.
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