Re: FRA
- From: Jeremiah Wilton <jwilton@xxxxxxxxxxxxx>
- To: oracle-l List <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 11 Dec 2009 09:25:27 -1000
I guess I am a pretty big fan of using the FRA in 10.2 and 11.x for
backups. Configured correctly, it eliminates the need to write
scripts to manage and delete old archivelogs and backups, since the
oldest files get deleted to make space for new files when the FRA
reaches 100%. With backup optimization on, the subsequent backup from
disk to tape via a MML is greatly reduced in size. Overall, it
replaces a lot of home-grown scripting and management we have all
developed over the years. You don't have to mark anything obsolete or
delete via RMAN if it is configured correctly. Set up right, it is
"Self-managing."
My biggest complaint about the FRA is that you cannot archive directly
into compressed backupsets. So if you use the FRA as your
log_archive_dest_n, the archivelogs can take up comparatively more
space than database backups.
Regards,
Jeremiah Wilton
Blue Gecko, Inc.
http://www.bluegecko.net
On Dec 11, 2009, at 7:23 AM, Allen, Brandon wrote:
Jay, I would say there isn't much point in using an FRA unless you
want to use it for Flashback Database, or if you want to use it to
segregate backup/archivelog space between multiple databases running
on the same file system, or you want to use the "backup recovery
area" command in order to manage subsequent backups from disk to tape.
If you haven't already, I'd suggest searching MOS for "flash
recovery area" and reading some of the articles on "benefits" and
managing space issues, (e.g. 315098.1). Make sure you understand
the part about not just clearing files at the OS level - you have to
delete them through RMAN, or crosscheck them after deleting at the
OS, in order to make the space available for other files again.
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