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MQSeries.net Forum Index » General IBM MQ Support » Active log is full (AIX)

Active log is full (AIX)

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xujinq

Posted: Mon Mar 11, 2013 4:35 am Post subject: Active log is full (AIX)

Newbie

Joined: 10 Mar 2013
Posts: 5

hi , one of qmgr active log used 14GB's space , it cased the whole file system /var/mqm/log reach 100% used . I checked all the log being in use , and less message stay in queues . how can i remove these active logs ?

Thanks a lot .

zpat

Posted: Mon Mar 11, 2013 4:46 am Post subject:

Jedi Council

Joined: 19 May 2001
Posts: 5866
Location: UK

Circular logs?

Look for long running open transactions.

bruce2359

Posted: Mon Mar 11, 2013 5:57 am Post subject:

Poobah

Joined: 05 Jan 2008
Posts: 9472
Location: US: west coast, almost. Otherwise, enroute.

Look for new or recently modified applications. One of 'em might be in an endless loop.
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xujinq

Posted: Mon Mar 11, 2013 7:11 am Post subject:

Newbie

Joined: 10 Mar 2013
Posts: 5

thank you all .
I am not sure if they are circular logs . but even if i found out which app modified , how can i release the logs ?

Vitor

Posted: Mon Mar 11, 2013 7:18 am Post subject:

Grand High Poobah

Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA

xujinq wrote:

even if i found out which app modified , how can i release the logs ?

Stop the app and force a rollback.
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Honesty is the best policy.
Insanity is the best defence.

xujinq

Posted: Mon Mar 11, 2013 7:33 am Post subject:

Newbie

Joined: 10 Mar 2013
Posts: 5

Vitor wrote:

xujinq wrote:

even if i found out which app modified , how can i release the logs ?

Stop the app and force a rollback.

Yes, i can stop App and all the channel also can be stop , but i have no idea about force rollback , could you pls list me the commands or something more details ? thank you so much ...

Vitor

Posted: Mon Mar 11, 2013 7:39 am Post subject:

Grand High Poobah

Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA

xujinq wrote:

Vitor wrote:

xujinq wrote:

even if i found out which app modified , how can i release the logs ?

Stop the app and force a rollback.

Yes, i can stop App and all the channel also can be stop , but i have no idea about force rollback , could you pls list me the commands or something more details ? thank you so much ...

I meant stop the app to make the app do a rollback.
_________________
Honesty is the best policy.
Insanity is the best defence.

gbaddeley

Posted: Mon Mar 11, 2013 2:32 pm Post subject:

Jedi Knight

Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia

xujinq wrote:

thank you all .
I am not sure if they are circular logs . but even if i found out which app modified , how can i release the logs ?

One of the first things to determine in the case of logs filling a file system is are they linear or circular. Linear is the most likely culprit, and an automated linear log clean up script is not running.

Its unlikely that a single UOW is consuming anywhere near 14GB. If the logs fill MQ will probably roll back large UOWs anyway.
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xujinq

Posted: Tue Mar 12, 2013 6:12 pm Post subject:

Newbie

Joined: 10 Mar 2013
Posts: 5

-------------------------------------------
LogDefaults:
LogPrimaryFiles=5
LogSecondaryFiles=2
LogFilePages=4096
LogType=LINEAR
LogBufferPages=512
LogDefaultPath=/var/mqm/log
-------------------------------------------
It's LINERAR logs , now it's difficult to do application roll back , coz this is testing environment , and i do not have the contacts for application team, the msg in the active log should be unwanted , is there any other options to clean all of them ?

xujinq

Posted: Tue Mar 12, 2013 7:40 pm Post subject: Problem resolved , Thank you all.

Newbie

Joined: 10 Mar 2013
Posts: 5

---------------------------------------------
rcdmqimg -m <QMGR> -l -t all \*
---------------------------------------------
I found this command can realse the unwanted active logs.

Thanks for all of you .

zpat

Posted: Tue Mar 12, 2013 10:43 pm Post subject:

Jedi Council

Joined: 19 May 2001
Posts: 5866
Location: UK

The LogFilePages default of 4096 is too small, I set mine at 16384.

exerk

Posted: Wed Mar 13, 2013 2:01 am Post subject:

Jedi Council

Joined: 02 Nov 2006
Posts: 6339

xujinq wrote:

Allocate more disk if possible, just to give yourself breathing room, then manage redundant logs - there are at least two Support Pacs that will do it for you.
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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.

exerk

Posted: Wed Mar 13, 2013 2:03 am Post subject: Re: Problem resolved , Thank you all.

Jedi Council

Joined: 02 Nov 2006
Posts: 6339

xujinq wrote:

And if the log space (disk) is full how do you expect the queue manager to cut additional logs to write all that information to?
_________________
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.

fjb_saper

Posted: Wed Mar 13, 2013 3:31 am Post subject:

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY

Have you looked at the support packs for linear log maintenance? (ex MS0L) ?

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