Re: Rolling incremental backups & Compressio

It does not roll the copy foreword by using archive logs, it takes
incremental changes from the datafiles and applies them to the copy.  You
are correct though, they cannot be compressed.

On 6/11/07, Valentin Minzatu <valentinminzatu@xxxxxxxxx> wrote:

  As far as I know, 'BACKUP INCREMENTAL LEVEL 1 FOR RECOVER OF COPY' rolls
forward the image copy by applying the archived redo logs to the backup
image - pretty much like a physical standby - and it is not stored as a
separate backup, so you cannot compress it. You may want as a safety net to
create additional backup sets which can be compressed.

Valentin



----- Original Message ----
From: Don Seiler <don@xxxxxxxxx>
To: oracle_l <oracle-l@xxxxxxxxxxxxx>
Sent: Monday, June 11, 2007 5:00:05 PM
Subject: Rolling incremental backups & Compression

Afternoon everyone.  I'm on Oracle 10.2.0.2 on RHEL3.

I'm exploring the option of using the "rolling forward image copy"
method of incremental backups with RMAN, as detailed in section 4.4.3
of of Backup and Recovery Basics guide [1].

I know that the initial backup will be an image copy, and therefore
not compressed.  My question is: can the subsequent level 1
incremental backups be compressed backupsets?

[1]
http://download-east.oracle.com/docs/cd/B19306_01/backup.102/b14192/bkup004.htm

--
Don Seiler
oracle blog: http://ora.seiler.us
ultimate: http://www.mufc.us
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http://www.freelists.org/webpage/oracle-l



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