Re: Diff between "controlfile autobackup" and "snapshot controlfile"
- From: Koen Van Langenhove <Koen.Van_Langenhove@xxxxxxxxxxx>
- To: mgogala@xxxxxxxxxxxxxxxxxxxx
- Date: Thu, 03 Feb 2005 11:48:58 +0100
Mladen Gogala wrote:
>Sam Reddy wrote:
>
>
>
>>Why there are two of these options ?
>>
>>
>>
>>
>>
>There is no difference. Those two options both produce a backup of
>controlfile which
>can be used to recover database using backup controlfile. The two
>options are here
>to confuse the enemy.
>
>
>
Well, I had this slightly different opinion .. the snapshot controlfile
is a backup creates before the actual backup starts in order to have a
'read consistent' view of the controlfile during the backup. The
controlfile autobackup is the 'regular' backup of the controlfile and it
is created after the datafile and eventually archivelog backups. I read
this in R. Freeman's book 'RMAN backup and recovery' ..
So I agree with Mladen that both can be used in recovery operations, but
I think there's more to it than just confusing the enemy ;)
--
Regards,
Koen
Siemens ICM/ICN
IC MN D IS
Phone : +32 14 25 3000
Email : Koen.Van_Langenhove@xxxxxxxxxxx
- - - - - - -
Unix IS user-friendly .., it's just quite picky about its friends.
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