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| guest468 |
 Posted: Thu Nov 01, 2007 2:50 am Post subject: Messages disappeared from the queue |
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Centurion
Joined: 30 May 2006
Posts: 146
Location: NY
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We have a high influx of messages to a QMGR hosting couple of queues in it. The incoming message rate is about 500/sec at QMGR level. Yesterday we stopped the applications since we had some issues with d/b. But today morning when I checked there are only a couple hundred messages sitting in the queue (last midnight when I checked each queue was having almost a million messages). These are all non-persistent messages. The filesize limit is set to unlimited and we have more than 200GB filesystem space available. I am not sure how these messages disappeared from the queues. Does the QMGR cleans up the non-persistent messages when the queue file size reaches certain size?
Thanks. |
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| fjb_saper |
| Posted: Thu Nov 01, 2007 2:52 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Were the messages set to expire after a period of time? 
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MQ & Broker admin |
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| guest468 |
| Posted: Thu Nov 01, 2007 2:56 am Post subject: |
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Centurion
Joined: 30 May 2006
Posts: 146
Location: NY
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Hi
All messages are having expiry parameter set to unlimited (-1)
Thanks. |
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| fjb_saper |
| Posted: Thu Nov 01, 2007 3:00 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Did the app get restarted and consume the messages?
What is the value of ipprocs?
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MQ & Broker admin |
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| guest468 |
| Posted: Thu Nov 01, 2007 3:08 am Post subject: |
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Centurion
Joined: 30 May 2006
Posts: 146
Location: NY
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| IPPROCS is zero for all the queues. Applications were never started,I checked the was system logs. |
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| fjb_saper |
| Posted: Thu Nov 01, 2007 3:19 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Was the qmgr bounced ?
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MQ & Broker admin |
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| guest468 |
| Posted: Thu Nov 01, 2007 3:26 am Post subject: |
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Centurion
Joined: 30 May 2006
Posts: 146
Location: NY
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Nope it wasn't. There are couple of people having access but I highly doubt anyone cleaned the queues accidentaly.
Is there any possibility of QMGR cleaning up the messages from the q queue under some circumstances(other than boune)?
This is linux (2.4.21-47.0.1) running 32 bit HW/OS/MQ. I assume there is no limit on q file size? |
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| bower5932 |
| Posted: Thu Nov 01, 2007 3:59 am Post subject: |
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Jedi Knight
Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA
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| I don't know of any situations where messages just disappear. I'd be suspicious of somebody running a program that 'accidentally' removed the messages when it shouldn't have. |
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| jefflowrey |
| Posted: Thu Nov 01, 2007 4:48 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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Someone did something to cause these messages to be removed.
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I am *not* the model of the modern major general. |
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| SAFraser |
| Posted: Thu Nov 01, 2007 9:26 am Post subject: |
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Shaman
Joined: 22 Oct 2003
Posts: 742
Location: Austin, Texas, USA
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| Forgive if this is obvious and you've done it already..... But what entries do you see in the queue manager log from midnight until the morning? |
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