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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Question for RMAN guru's
My first thought was "no way"...no *free* upgrade from 8i to 9i by simply restoring and recovery with 9i.
But thats not what they are saying...right; " recovery "through" an Oracle 8.1.7.x --> 9.2.0.5 migration,..."
They say/imply;
archive log 1
8i RMAN Backup...
archive log 2
archive log 3
Upgrade/Migrate 8i to 9i...
archive log 4
archive log 5
Upgrade your app...
archive log 6
archive log 7
Database failure...
RMAN(9i)> restore 8i backup.
RMAN(9i)> roll/recover archive log 2 "through" archive log 7
Now 9i database again.
Yeah I believe it...just using the 9i RMAN engine to restore and recovery a 8i database files...not really running 8i database "OPEN" with 9i binaries.
Chris Marquez
Oracle DBA
-----Original Message-----
From: oracle-l-bounce_at_freelists.org on behalf of Hollis, Les
Sent: Tue 10/4/2005 8:17 PM
To: Paul Drake
Cc: ORACLE-L
Subject: RE: Question for RMAN guru's
>From the 3rd party documentation
From: Paul Drake [mailto:bdbafh_at_gmail.com]
Sent: Tuesday, October 04, 2005 6:13 PM
To: Hollis, Les
Cc: ORACLE-L
Subject: Re: Question for RMAN guru's
On 10/4/05, Hollis, Les <Les.Hollis_at_ps.net> wrote:
The backup is online.........
It hasn't happened yet, we are starting the upgrade in about 2 hours.........
Les,
Can you take a subset of that backup set (e.g. system, rbs, one app schema tablespace's datafiles) and restore/recover that using the newer version as a test?
Sorry that I can't be of more help, as I didn't use rman until 9.2. I don't even have any 8.1.7 databases around anymore - I was glad to get rid of them.
Paul
From: Paul Drake [mailto:bdbafh_at_gmail.com] Sent: Tuesday, October 04, 2005 5:59 PM To: Hollis, Les Cc: ORACLE-L Subject: Re: Question for RMAN guru's On 10/4/05, Hollis, Les <Les.Hollis_at_ps.net> wrote: I am being told that I could recover a database under 9iwith backupsets that were backed up under 8i.
Scenario:
8i database (8.1.7.4) on AIX
Backup taken using RMAN
Upgrade DB to 9.2.0.5 (that level determined by 3 rd party application only certified to .5)
NO backup taken after upgrade due to time constraints and lack of disk space for backup
Lose database and need to recover
Restore 8i filesets and recover them under 9i
Hasn't happened yet.....we are just projecting....
Can this be done......
According to 3rd party vendor yes with only 3 init.ora settings
Was the rman backup set created online or offline (in other words, will it require recovery)?
I can recall attempting to make consistent an 8.1.7 hot physical backup set with 9.2 binaries prior to an upgrade (cross-version cloning on test hardware).
It wasn't pretty. It was tossed and a cold, consistent backup set was used for the test upgrade.
Redo log formats have a habit of changing between major releases.
In general, you will want to have a cold backup set (or offline rman backup set - mounted) for opening with the newer version.
How did your tests turn out?
Paul
(that testing was on w2k3 32 bit, with 9.2.0.5.3)
-- #/etc/init.d/init.cssd stop # f=ma, divide by 1, convert to moles. -- http://www.freelists.org/webpage/oracle-lReceived on Tue Oct 04 2005 - 20:36:46 CDT
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