>>I just cheated and backed up the control file separately "Cheat" nothing this is just smart...or reality :o| >> run {allocate channel c4 type disk; copy current controlfile to... >> in my shell script *every* time and AT THE END OF EACH BACKUP >> NOT an RMAN *backup* of my controlfile (totally useless), >> but rather a *COPY* of my controlfile. >> Meaning it can be used without RMAN; As I said in an earlier post, RMAN backup controlfile (IMHO) is rather useless. It is the classic "chicken and egg". You have a controlfile in the RMAN backup, but you need a current controlfile to get to the backup! (in the absence of a recover catalog). If I have a current controlfile then why do I need the one *in* the backup? Oracle should update the RMAN documentation it indicate thsi mental puzzle. Seems everyone learns this the hard way during testing...or the really hard way during a disaster. Anyone want to guess... What would be of some use when all current controlfiles and datafiles are lost and you have >1 good RMAN backups? (A worst case senario). Chris Marquez Oracle DBA -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx on behalf of Dennis Williams Sent: Wed 5/25/2005 6:15 PM To: rgramolini@xxxxxxxxxxxxxxx Cc: oracle-l Subject: Re: FW: backing up rman catalog for disaster recovery Actually, RMAN always writes to the control file before it updates the catalog. So even if you do an RMAN backup using a catalog, you can still recover the database using only the controlfile. Now, in Oracle8i I had problems recovering the control file from the RMAN backup, so I just cheated and backed up the control file separately after the RMAN backup completed, and made sure the control file backup was on the same tape as the RMAN backup. I have performed many recoveries using this method. Dennis Williams On 5/25/05, Ruth Gramolini <rgramolini@xxxxxxxxxxxxxxx> wrote: >=20 >=20 > One very easy way is to do an rman backup with the nocatalog option. Thi= s > will use controlfile info for restores and recoveries. You can use all t= he > options of rman, just no catalog. That is what we do. >=20 > Just my $0.02, > Ruth >=20 > -----Original Message----- > From: Paula_Stankus@xxxxxxxxxxxxxxx > [mailto:Paula_Stankus@xxxxxxxxxxxxxxx] > Sent: Wednesday, May 25, 2005 4:49 AM > To: Paula_Stankus@xxxxxxxxxxxxxxx; rgramolini@xxxxxxxxxxxxxxx; > all_about_oracle@xxxxxxxxxx; oracle-l@xxxxxxxxxxxxx > Subject: RE: backing up rman catalog for disaster recovery >=20 >=20 > I am setting up a disaster recovery site and I was thinking about the > best way to do this. >=20 > My theory is that I would like to not just use another recovery catalog > on the DR site to backup my primary catalog but to somehow keep these > catalogs constantly in-synch so when I do need to do complete recovery > and only have the secondary rman catalog available - I wouldn't have to > recover the catalog as all of the previous backups would be found there. >=20 > So....should I do this using Oracle Data Guard on my disaster recovery > site catalog or backup rman then restore as my first procedure? Any > advice? >=20 > -- > //www.freelists.org/webpage/oracle-l > -- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l