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| drakumad57 |
 Posted: Wed Dec 16, 2009 2:31 am Post subject: Backup Queue Manager |
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Newbie
Joined: 18 Feb 2009
Posts: 4
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Hello,
Was after some advice on running a backup queue manager at a secondary data centre.
If, for example, i was running a primary site with linear logging, current log was S0000003.LOG. I then issued a checkpoint (rcdmqimg), then advanced the log to S0000004.LOG. Which files would i need to move to the secondary data centre in order to recover the primary MQ server on a backup qmgr?
- the checkpoint file?
- the log control file?
- S0000003.LOG?
- all of the log file up to S000004.LOG?
ANy help would be much appreciated. I have read through a lot of the discussions on here and IBM's docs regarding this but am still having trouble understanding.
Thanks,
D |
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| exerk |
| Posted: Wed Dec 16, 2009 3:09 am Post subject: |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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It's pretty explicit HERE...especially note what it says in step 3.
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| drakumad57 |
| Posted: Tue Dec 22, 2009 7:14 am Post subject: |
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Newbie
Joined: 18 Feb 2009
Posts: 4
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thanks for the link. the advice from the infocenter advises to:
- create the backup queue manager
- copy the data and log files from your primary queue manager over the backup queue manager's data and logs
- flag backup qmgr as a backup and replay log extents (strmqm -r)
- periodically copy over the log files prior to the CURRLOG value from the queue manager
for recovery:
- replay log extents on backup queue manager which replays the copied log extents
- activate backup queue manager
- start backup queue manager
The above works fine and i can recover all messages from the queues on the backup queue manager up to when the last log file was copied.
In order to minimize the number of logs needed to be copied across to the backup queue manager i have been checkpointing using the rcdmqimg command and deleting superfluous logs from the active logs directory. The above process still works fine but the MEDIALOG value on the backup queue manager value is an older file on the backup queue manager - in fact the file doesnt exist on the primary queue manager as it has been removed as superfluous after a checkpoint has been created. Will this cause any issues on the backup queue manager?
Thanks,
Darren |
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| doris.knittel |
| Posted: Tue Dec 04, 2012 7:46 am Post subject: |
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Novice
Joined: 07 Dec 2010
Posts: 12
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Hello all,
how can I create a backup qmgr??? IBM says:
... Create a backup queue manager for the existing queue manager using the control command crtmqm. The backup queue manager requires the following:
To have the same attributes as the existing queue manager, for example the queue manager name, the logging type, and the log file size.
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But how can I double qmgr names???
I have MQ 7.0.1.4 on Linux
Thanks in advance
Doris |
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| exerk |
| Posted: Tue Dec 04, 2012 7:49 am Post subject: |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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| doris.knittel wrote: |
| But how can I double qmgr names??? |
The back up queue manager is created exactly the same as the 'donor' queue manager, using exactly the same command, just on a different server.
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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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| doris.knittel |
| Posted: Tue Dec 04, 2012 8:06 am Post subject: |
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Novice
Joined: 07 Dec 2010
Posts: 12
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Thank you very much!
I would also itself can come on it  |
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