RE: Compressing Rman Disk Backups/Roberts 10g new features book
- From: "Smith, Ron L." <rlsmith@xxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>, "M Rafiq " <rafiq9857@xxxxxxxxxxx>
- Date: Tue, 30 Mar 2004 10:56:16 -0600
If you compress your RMAN backup, doesn't that defeat one of the main
features of RMAN? Namely RMAN's ability to pick the correct backup
during a restore. RAMN would think all the backups are on a pipe
somewhere.
Ron Smith
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Freeman Robert - IL
Sent: Tuesday, March 30, 2004 10:51 AM
To: 'M Rafiq '; 'oracle-l@xxxxxxxxxxxxx '
Subject: RE: Compressing Rman Disk Backups/Roberts 10g new features book
In fact, the discount you get on Amazon or Bookpool is better than what
*I* get as the author (go figure)... :-) Yer best bet is either of those
sites...
Cheers!
Robert
-----Original Message-----
From: M Rafiq
To: oracle-l@xxxxxxxxxxxxx
Sent: 3/30/2004 10:36 AM
Subject: RE: Compressing Rman Disk Backups/Roberts 10g new features book
Nice to hear about your new book. Any list members discount?
Regards
Rafiq
From: Freeman Robert - IL <FREEMANR@xxxxxxxx>
Reply-To: oracle-l@xxxxxxxxxxxxx
To: "'oracle-l@xxxxxxxxxxxxx '" <oracle-l@xxxxxxxxxxxxx>
Subject: RE: Compressing Rman Disk Backups
Date: Tue, 30 Mar 2004 08:44:12 -0600
Sorry to be late in this thread, and I'm not sure if anyone has
mentioned this... but Oracle 10g provides for REAL compression of RMAN
backups when they are created. Not the old "we don't back up unused
blocks" but real, honest to goodness compression.
All this and more in Oracle Database 10g New Features by Moi! It's
available NOW! Wooo Hooo!
Robert
-----Original Message-----
From: DENNIS WILLIAMS
To: oracle-l@xxxxxxxxxxxxx
Sent: 3/30/2004 8:33 AM
Subject: RE: Compressing Rman Disk Backups
Tom
I think you are on the right track. I was at an Oracle presentation
last week where they stated that in some respects disk is approaching
the cost of tape. I think a lot of enterprises are moving toward adding
a little additional disk and having a single shared tape backup
facility.
Dennis Williams
DBA
Lifetouch, Inc.
dwilliams@xxxxxxxxxxxxx
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx]On Behalf Of Mercadante, Thomas F
Sent: Tuesday, March 30, 2004 8:28 AM
To: 'oracle-l@xxxxxxxxxxxxx'
Subject: RE: Compressing Rman Disk Backups
All,
After thinking about this more, we are considering two things:
Adding more disk space to the backup directory to be able to hold a full
Rman backup, or going directly to tape.
I am no longer considering compressing the rman backups on disk. Only
because, if we fall into a recovery scenario, I may not have room to
completly uncompress the full rman backup. That would leave me with
juggling a restore with uncompressing a file, letting rman work on it,
wait for rman to finish with it, ask for the next file, compress the
first and uncompress the second... talk about spinning plates. Just
not a way to run a business.
So we are reviewing cost differences between adding disk and backing up
to tape.
thanks again for all the replies.
Tom Mercadante
Oracle Certified Professional
-----Original Message-----
From: Khedr, Waleed [mailto:Waleed.Khedr@xxxxxxx]
Sent: Tuesday, March 30, 2004 9:21 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: RE: Compressing Rman Disk Backups
Did you consider looking for compressed file systems? I don't know if
there is any for UNIX but my guess would be why not :) Probably the
compression would be on the file system block level to allow
concurrency.
May be there is an option during the create and the mount of the file
system that allows it to be compressed without buying other products.
Regards,
Waleed
-----Original Message-----
From: Mercadante, Thomas F [mailto:thomas.mercadante@xxxxxxxxxxxxxxxxx]
Sent: Monday, March 29, 2004 10:20 AM
To: 'oracle-l@xxxxxxxxxxxxx'
Subject: Compressing Rman Disk Backups
All,
I am attempting to perform Rman disk backups on a data warehouse. While
the disk backup runs fine, the size of the output files are, of course,
huge. What I would like to do is to pipe the output of the Rman backup
while it is running to something like Gzip so that the file gets created
compressed. My other option is to break the backup into a tablespace by
tablespace multi-Rman run process and gzip or compress the files in
between each step.
Anybody found a way to do this?
thanks
PS - Oracle 9.2.0.3 on Sun Unix.
Tom Mercadante
Oracle Certified Professional
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