RE: rman restore & arclogs

From: Koivu, Lisa <lisa.koivu_at_efairfield.com>
Date: Mon, 03 Dec 2001 12:02:37 -0800
Message-ID: <F001.003D39F7.20011203113150@fatcity.com>

Thanks Tom.  I did try removing the arclogs and then running a backup - no complaints.  The arclogs in question were still present in the catalog via past backups.   I'm guessing this is because the last scn of the last backup was larger than the scn's included in the arclogs in question. 

However, a crosscheck report caused failure for all those logs.  Not a big deal, but once this all goes into production I want to see all my reports & lists sent to me every day with no "FAILURE" or anything of that nature in it.  Erring conservative is probably better anyway, unless i'm really tight on disk. 

Restoring is kinda fun :)  I take that back, being a dba is kinda fun.  Once I actually got to start doing it, that is. 

-----Original Message-----

From:   Mercadante, Thomas F [SMTP:NDATFM_at_labor.state.ny.us]
Sent:   Monday, December 03, 2001 1:56 PM
To:     Multiple recipients of list ORACLE-L

Subject:        RE: rman restore & arclogs

Lisa,
 

I guess I'm lazy (or cautious) in that I would allow the first backup to take this archive log files back to tape where they belong, rather than determine (by running reports) which log files I may delete (by hand).

 

The cautious part of me says that if Rman decided to back these monkeys up within the first save set after the recovery, it may have decided that it needs them for a future recovery.  If you did remove them by hand, Rman may complain that it was expecting them and did not find them.  Did you try this - remove one that was restored by the recovery process and then tried a backup?

 

Depending on the kind of restore you do  - a full, or a point in time - the archivelog may be of no use anyway (a point in time makes them invalid because you had to perform an "open db reset logs", while a full restore could still use these again).

 

Glad you are at least experimenting with the tool before you put it in production - it actually is fun to do a restore as it happens so infrequently!

 

Good Luck!

Tom Mercadante
Oracle Certified Professional

-----Original Message-----
From: Koivu, Lisa [mailto:lisa.koivu_at_efairfield.com] Sent: Monday, December 03, 2001 10:30 AM To: Multiple recipients of list ORACLE-L Subject: rman restore & arclogs

Good morning all -

I've been practicing rman restores.  It's a lot easier than I originally thought.  I've noticed that when you restore and the arclogs are needed, it restores them.  Which is expected.  However, when I take another backup, these arclogs are included in the backup set.  This is unnecessary in my opinion and makes my backup files larger than they need to be.

Is it standard practice to just delete the arclogs that were already in a backup set prior to taking the immediate backup after a recovery?  I can verify what arclogs are where in the backup sets with a report. 

Any comments are appreciated.  Thanks

Lisa Koivu
Oracle Database Monkey
Fairfield Resorts, Inc.
954-935-4117 Received on Mon Dec 03 2001 - 14:02:37 CST