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R12 backup with Minimal downtime [message #477658] Sun, 03 October 2010 03:13 Go to next message
paradoxkhan
Messages: 92
Registered: April 2008
Location: Pakistan
Member

HI,

We have 24*7 critical single node Production environment EBS R12(12.0.4) running on RHEL5. Often we have to apply patches, and for this downtime is required for backup which takes 3 hours to complete(cold app/db binaries). Please clarify

1) Can we take application binaries backup while services are running?

2) Can we take db binaries+datafiles backup after " alter database begin backup" ?

3) Or we should take backup of binaries(app/db)after stopping all the services?

Please help as this really bothering. Thanks
Re: R12 backup with Minimal downtime [message #477669 is a reply to message #477658] Sun, 03 October 2010 05:30 Go to previous messageGo to next message
John Watson
Messages: 8592
Registered: January 2010
Location: Global Village
Senior Member
1. Yes
2. Yes
3. No need
Re: R12 backup with Minimal downtime [message #477725 is a reply to message #477669] Mon, 04 October 2010 02:17 Go to previous messageGo to next message
paradoxkhan
Messages: 92
Registered: April 2008
Location: Pakistan
Member

Thank you very much. John can you provide me any metalink note or link covering the same scenario.
Also i would like to know incase of patch goes wrong and we need to restore the previous backup. Which tops from application(APPL,COMON etc)
and from db we need to restore? Any note on this.
Re: R12 backup with Minimal downtime [message #478250 is a reply to message #477725] Thu, 07 October 2010 08:41 Go to previous messageGo to next message
Alien
Messages: 282
Registered: June 1999
Senior Member
Hi,

In case a patch fails, it would be best to try and fix the problem with the patch. After all, there is a reason for applying the patch in the first place.

If you want to restore a backup, you'll most likely need to restore the database, appl_top, comn_top/html comn_top/java.
Preferably you'll remove the logfiles from the inst_top.

To be sure about the impact of a patch, you can apply it first with apply=no, and review the log to see exactly which files the patch will update.

I don't think there is any note on rolling back patches. But best practices are in MOS: 225165.1

Regards,

Arian
Re: R12 backup with Minimal downtime [message #478892 is a reply to message #478250] Wed, 13 October 2010 05:22 Go to previous message
paradoxkhan
Messages: 92
Registered: April 2008
Location: Pakistan
Member
Thank you so much really helpful Smile
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