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MQSeries.net Forum Index » IBM MQ Installation/Configuration Support » Some questions about linear logging...

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EB
PostPosted: Mon Sep 13, 2004 3:45 am    Post subject: Some questions about linear logging... Reply with quote

Acolyte

Joined: 19 Mar 2004
Posts: 70
Hi
We are planning a new solution where recovery is essential, in this matter I have a few questions regarding linear logging.

The linear logs contain the information to recover persistent messages. Is this correct?

Can you take backup of the logfiles while qmgrs are running?

Is it possible to restore to a time prior to media failure? I try to explain. Say you experience media failure on a sunday at 18.00 and several batches have run on saturday and sunday. Can you recover back to the state MQ had on friday at 16.00 and if so how?

Any advice or other considerations are greatly apreciated.

Regards
EB
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jefflowrey
PostPosted: Mon Sep 13, 2004 4:31 am    Post subject: Reply with quote

Grand Poobah

Joined: 16 Oct 2002
Posts: 19981
The System Administration Guide has an entire chapter on backup/recovery.
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I am *not* the model of the modern major general.
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PGoodhart
PostPosted: Mon Sep 13, 2004 4:42 am    Post subject: Reply with quote

Master

Joined: 17 Jun 2004
Posts: 278
Location: Harrisburg PA
The linear logs contain the information to recover persistent messages. Is this correct?
Yes

Can you take backup of the logfiles while qmgrs are running?
No

Is it possible to restore to a time prior to media failure? I try to explain. Say you experience media failure on a sunday at 18.00 and several batches have run on saturday and sunday. Can you recover back to the state MQ had on friday at 16.00 and if so how?
Yes and No (Persistent messages yes, none persistent messages no)

I'd look at ReQuest if you are looking for more/different functionality then provided by the IBM backup methods.
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Patrick Goodhart
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EB
PostPosted: Mon Sep 13, 2004 4:46 am    Post subject: Reply with quote

Acolyte

Joined: 19 Mar 2004
Posts: 70
JeffLowrey
Of course I should have checked the sys adm guide first.

Lets look at this as a tribute to MQSeries.net, since I checked here before looking up the matter in the product documentation.

PGoodhart
Thanx alot for the info. Can I bother you for more information around ReQuest? I have not heard of it before.

Regards
EB
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