Re: What are the common mistakes DBA do retarding backup & Recovery?

I haven't used the split mirror technology. But, I love to use RMAN and I have no hesitation recommending people to use RMAN because of the following advantages with RMAN:

Incremental Backups (Change Tracking)
Compressed backups
Encrypted backups
Easy maintenance

On 7/6/07, John Kanagaraj <john.kanagaraj_at_gmail.com> wrote:
>
> > 3. Afraid of using RMAN or Making benefits of RMAN
>
> I would like to challenge Pt 3 in the OP's list.
>
> It is NOT an issue if RMAN is NOT being used. There are databases that
> are hundreds of Gigs in size that are backed up from split mirror
> disks (Mirror database disks, place whole database in backup mode,
> split the mirror, take the database out of backup mode, switch the
> redologs, mount the mirror filesystems under a separate tree, transfer
> the new archivelog to the mirror's archivelog directory, backup the
> mirrors, and you are done). Although there is a cost (extra $$ for the
> mirror disks) there are some advantages:
>
> 1. You have a backup of the database online in the mirror (until at
> least the time you are ready to merge the mirrors back) - this has
> saved my behind in one specific case on a highly visible system. No
> mucking around with RMAN's MML and tapes or even a disk stage - just a
> straight copy of datafiles back into the original area)
> 2. You take the backup I/O away from Production datafiles (RMAN
> contends with the live datafiles)
>
> Backing up an Oracle database without regular scheduled restores (from
> tapes if possible) as well as NOT backing up the Application tiers
> along with the database are high in my list of common mistakes. Again,
> for SOX compliant organizations, this is usually an IT Control so many
> orgs have become better at this (one of the positive effects of SOX)
>
> --
> John Kanagaraj <><
> DB Soft Inc
> Phone: 408-970-7002 (W)
>
> ** The opinions and facts contained in this message are entirely mine
> and do not reflect those of my employer or customers **
>

-- 
Best Regards,
Syed Jaffar Hussain
Oracle ACE
8i,9i & 10g OCP DBA

http://jaffardba.blogspot.com/
http://www.oracle.com/technology/community/oracle_ace/ace1.html#hussain
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