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| rajeshdjsmart |
 Posted: Fri Mar 14, 2008 5:34 am Post subject: REcovery steps for saveqmgr |
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Apprentice
Joined: 05 Mar 2008
Posts: 30
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Hi Experts,
Good Morning...
Success!!!
I was able to save the objects and queues and all the queue manager defination from saveqmgr.
Now...The thing is How do you recover the queue manager files in case of Failure using savqmgr?
Thanks,
Raj. |
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| exerk |
| Posted: Fri Mar 14, 2008 7:40 am Post subject: |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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As has been pointed out in previous replies to your posts - you don't!
The 'saveqmgr' utility is purely for taking a back up of queue manager objects and attributes, and authorities too in v6.
It does not back up queue files, or messages, or anything else - that is up to how your site mandates recovery.
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| rajeshdjsmart |
| Posted: Fri Mar 14, 2008 8:00 am Post subject: We have TSM for file backup |
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Apprentice
Joined: 05 Mar 2008
Posts: 30
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Thanks for the reply,
We are using TSM for file system backup.
And it saves all the queue manager logs and control files.
Is it enough for the backup point of view?
And saveqmgr is running every day for all the active queue managers |
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| exerk |
| Posted: Fri Mar 14, 2008 8:16 am Post subject: |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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As (I believe - apologies if I'm wrong) Jeff Lowrey has pointed out many times, any back-up of a queue manager is only a snapshot of a particular point in time, no matter how good the back-up regime.
Consider the scenario:
You back up a queue manager at 12:00 each day, but one day after the back-up, almost immediately after restart it receives 5000+ messages then crashes irrecoverably - logs trashed etc. You restore the back-up but...what of the 5000+ unprocessed messages that were in the queue manager?
As regards saveqmgr I have found it to be an invaluable tool for rapid rebuild/cloning of queue managers. I suggest you use it for the same and stop thinking of it as a file/message recovery medium.
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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. |
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| rajeshdjsmart |
| Posted: Fri Mar 14, 2008 8:53 am Post subject: I would ike to share something |
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Apprentice
Joined: 05 Mar 2008
Posts: 30
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AS per the MQSeries Administrator Guide for V6
WMQ automatically recovers some objects from their media image if it finds that they are corrupt or damaged. In particular, this applies to objects found to be damaged during the normal queue manager startup. If any transaction was incomplete when the queue manager last shutdown, any queue affected is also recovered automatically in order to complete the startup operation.
And the Transaction which are not commited are rolled back..
If any damaged local queues containing uncommitted messages are discovered during startup processing on a queue manager that does not support media recovery, the queues are marked as damaged objects and the uncommitted messages on them are ignored. This is because it is not possible to perform media recovery of damaged objects on such a queue manager and the only action left is to delete them. Message AMQ7472 is issued to report any damage. Is this correct?
Or we are missing something here?
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| exerk |
| Posted: Fri Mar 14, 2008 9:00 am Post subject: |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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No, nothing is being missed; as the Guide states, media recovery is only available to a queue manager that has been configured for it.
As to how that configuration is achieved, I'll leave you to figure it out 
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| rajeshdjsmart |
| Posted: Fri Mar 14, 2008 9:54 am Post subject: |
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Apprentice
Joined: 05 Mar 2008
Posts: 30
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Got it!!!
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