| Oracle FAQ | Your Portal to the Oracle Knowledge Grid | |
 |
 | |||
| Oracle FAQ | Your Portal to the Oracle Knowledge Grid | |
|
| |||
Home -> Community -> Mailing Lists -> Oracle-L -> RE:
Dennis,
I don't see why Oracle even provides this type of backup (database in mount-only mode using Rman). To me, if I was considering this, I would just shut the database down and perform a cold backup. Using Rman in this situation is a waste of time (unless someone can give me a good reason why it is useful).
Rman's biggest strength is point in time recovery, and that the db is up and available all the time.
Anything else just seems like a waste to me - no practicality to it.
Tom Mercadante
Oracle Certified Professional
-----Original Message-----
From: DENNIS WILLIAMS [mailto:DWILLIAMS_at_LIFETOUCH.COM]
Sent: Friday, June 04, 2004 2:03 PM
To: 'oracle-l_at_freelists.org'
Subject: RE:
Joe - Good point. I usually don't even consider offline RMAN backups. But for a really large database, that might be useful.
Dennis Williams
DBA
Lifetouch, Inc.
dwilliams_at_lifetouch.com
-----Original Message-----
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org]On
Behalf Of jtesta_at_dmc-it.com
Sent: Friday, June 04, 2004 11:54 AM
To: oracle-l_at_freelists.org
Subject:
Dennis, one small clarification, you can do incremental rman backups in noarchivelogmode but the difference being you can only restore to the last rman backup(you'd have ot restore to the last level 0 and then apply incrementals) and never be able to get to point of failure. Since a noarchivelogmode database has to be shutdown, you'd be at a clean spot for recovery(and rman is smart enough to not let you do a backup with a shutdown abort as the last thing since the db has to be in mount state anyways), last i checked, its been about 6 months since i played with rman.
joe
original message below
Hamid
If you are thinking that incremental export would just export the
> new
rows in a table. It doesn't. It just detects tables that have changed
since the last export and exports those tables.
As Joe points out, RMAN can do incremental backups, but you must
> have
Enterprise Edition and run in archivelogmode.
If you want just part of a table, you could do something better on your
own. Since 8i export has a parameter QUERY. If you have a timestamp column
for when a table is inserted or updated, then you could do a partial export
of the table for just the new or changed rows. Again, I have done exports
with the QUERY parameter, but haven't designed an incremental backup system
based on that.
Dennis Williams
DBA
Lifetouch, Inc.
dwilliams_at_lifetouch.com
-- Archives are at http://www.freelists.org/archives/oracle-l/ FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html ----------------------------------------------------------------- ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request_at_freelists.org put 'unsubscribe' in the subject line. -- Archives are at http://www.freelists.org/archives/oracle-l/ FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html ----------------------------------------------------------------- ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request_at_freelists.org put 'unsubscribe' in the subject line. -- Archives are at http://www.freelists.org/archives/oracle-l/ FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------Received on Fri Jun 04 2004 - 13:15:58 CDT
 |
 |