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| kavithadhevi |
 Posted: Tue May 14, 2002 7:47 am Post subject: Ghost Qs |
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Master
Joined: 14 May 2002
Posts: 201
Location: USA
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Hi,
We are having some problem with Ghost Qs  , which are created during Creation of a Dynamic Qs. It starts to Build up and crashed the Qmanager itself.Has anyone faced this prob  or any idea how to avoid or eliminate these Ghost Qs  . NEED HELP ASAP.
Thanks in Advance.
-- Kavitha. |
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| mrlinux |
| Posted: Tue May 14, 2002 8:42 am Post subject: |
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Grand Master
Joined: 14 Feb 2002
Posts: 1261
Location: Detroit,MI USA
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ghost Qs are created by MQSeries so that dynamic queue creation is faster. MQSeries will define 10 ghost queues and when someone requests
a dynamic queue it will pull from the ghost list and then another ghost will
be created to backfill the ones pulled.
_________________
Jeff
IBM Certified Developer MQSeries
IBM Certified Specialist MQSeries
IBM Certified Solutions Expert MQSeries |
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| kavithadhevi |
| Posted: Tue May 14, 2002 9:19 am Post subject: |
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Master
Joined: 14 May 2002
Posts: 201
Location: USA
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Thank you Jeff.
But how to make it to go , cos it crashes the QManager. so any way either to avoid it or to do something.is the prob is from the appication point of view or the be looked into the dynamic Q or the model Qs settings. Pls help me out to pin point the prob and to solve it ASAP.
Thanks again. |
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| mrlinux |
| Posted: Tue May 14, 2002 10:06 am Post subject: |
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Grand Master
Joined: 14 Feb 2002
Posts: 1261
Location: Detroit,MI USA
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Well I dont beleive the ghost queues are the issue, I believe your applications/MQ Enviroment. what platform are you running on ????
you may need to do some kernel tuning if it is unix/linux
_________________
Jeff
IBM Certified Developer MQSeries
IBM Certified Specialist MQSeries
IBM Certified Solutions Expert MQSeries |
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| kavithadhevi |
| Posted: Tue May 14, 2002 12:28 pm Post subject: |
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Master
Joined: 14 May 2002
Posts: 201
Location: USA
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Thanks, I am running in UNIX . wat kinda tunning , can u pls be specific. actually we are using pub sub so i dont think they are created using dynamic Qs , i guess even though if we are not using dynamic Qs is it possible that Ghost Qs are created. in that case how to identify the prob for Ghost Qs not to crash the QManager.
-- Kavitha |
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| mrlinux |
| Posted: Wed May 15, 2002 3:34 am Post subject: |
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Grand Master
Joined: 14 Feb 2002
Posts: 1261
Location: Detroit,MI USA
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Well that depends on your unix brand, the quick beginnings guide
will give you some general settings, the ones I think could be giving you
the most trouble are shared memory related, when your queue mgr crashes does it create files with with the extension FDC in the /var/mqm/errors directory if so look at the very first one created based on the timestamp, and post the header hear from the file.
NOTE: The quick beginnings guide for Kernel Parms is very very basic if you have anything bigger than a small queue manager you need to think about bumping those up.
_________________
Jeff
IBM Certified Developer MQSeries
IBM Certified Specialist MQSeries
IBM Certified Solutions Expert MQSeries |
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| kavithadhevi |
| Posted: Wed May 15, 2002 6:14 am Post subject: Ghost Qs |
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Master
Joined: 14 May 2002
Posts: 201
Location: USA
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Jeff,
we are finding this kinda Q while using publish / subscribe application. so i am trying to know how the Qs behave , or the way it uses the Q for publishing Topics , wat all Qs it uses etc . if u have some knowledge pls show me some light towards it. |
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