both scenarios potentially lose the online redo logs. actually, since
you don't include the backup of the archived redo logs in either
scenario, you can't do recovery without a resetlogs for both scenarios.
In order not to lose the contents of the online logs, you have to
archive them and back them up as well.
Assuming you add in the archive of the online logs, and then backup the
archived logs as well, both scenarios can accomplish complete recovery.
What you lose in scenario 2 is the database availability during the
database is shut down for the file copy.
I hope you didn't bet on this.
Rachel
- Rick_Cale_at_teamhealth.com wrote:
> Hi DBAs,
>
> A co-worker and I disagree on impact of slightly different B&R
> scenarios
> and I would like your thoughts.
>
> Environment for both scenarios: Oracle 8.1.6, WinNt, Archivelog mode,
> not
> using RMAN
>
> Scenario 1:
> I do standard Hot Backup using
> BEGIN BACKUP
> OCOPY ...
> END BACKUP
> .....
>
> If database crashes I perform media recovery then recover
> database.
>
> Scenario 2:
> Co-worker shuts down database and copy all files to backup
> directory.
> Restarts database backup
> If database crashes restore backup files then apply
> the
> archive logs.
>
> Co-worker says both scenarios are the same. I think scenario 1
> results in
> no loss where scenario 2 results in the loss
> of data that was in the online redo logs.
>
> Any thoughts on this?
> Also what is the minimum system/object priviledges a user needs to
> perform
> B&R. I would like to create a user with only those
> privs necessary for B&R.
>
> Thanks
> Rick
>
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author:
> INET: Rick_Cale_at_teamhealth.com
>
> Fat City Network Services -- 858-538-5051 http://www.fatcity.com
> San Diego, California -- Mailing list and web hosting services
> ---------------------------------------------------------------------
> To REMOVE yourself from this mailing list, send an E-Mail message
> to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
> the message BODY, include a line containing: UNSUB ORACLE-L
> (or the name of mailing list you want to be removed from). You may
> also send the HELP command for other information (like subscribing).
Do you Yahoo!?
Y! Web Hosting - Let the expert host your web site
http://webhosting.yahoo.com/
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: Rachel Carmichael
INET: wisernet100_at_yahoo.com
Fat City Network Services -- 858-538-5051 http://www.fatcity.com
San Diego, California -- Mailing list and web hosting services
---------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from). You may
also send the HELP command for other information (like subscribing).
Received on Wed Oct 23 2002 - 10:49:21 CDT
