Re: student question: incremental backups (level 0 and level 1)

From: <fitzjarrell_at_cox.net>
Date: Wed, 25 Jun 2008 08:27:16 -0700 (PDT)
Message-ID: <71bab913-d0d4-44d6-b733-c517cbe11ee3@x41g2000hsb.googlegroups.com>


On Jun 25, 9:36 am, pellicleund..._at_hotmail.com (obakesan) wrote:
> David
>
> In article
> <7edbdd2f-d37a-4079-bb80-6c03d1d5d..._at_j22g2000hsf.googlegroups.com>,
>
> "fitzjarr..._at_cox.net" <orat..._at_msn.com> wrote:
>
> >No.  They are below the HWM so they do get backed up.  Any block below
> >the HWM has the potential to contain data.  Thus, all blocks below the
> >HWM are backed up.
>
> Hmm ... but I thought that only used blocks were backed up in an incremental
> backup. Does this mean that it can't determine if a block is used or not used?
>
> >It's wrong only in your mind.  It's correct in terms of the concepts
> >and functionality of RMAN.
>
> well, of course everything only ever exists in my mind. All of this will cease
> to exist when that stops ;-)
>
> See Ya
> (when bandwidth gets better ;-)
>
> Chris Eastwood
> Photographer, Programmer Motorcyclist and dingbat
> blog:http://cjeastwd.blogspot.com/
>
> please remove undies for reply

'Used' blocks are backed up in a level 1 or level 2 incremental; a level 0 incremental is about as close to a full backup as you can get and still keep an incremental strategy.

David Fitzjarrell Received on Wed Jun 25 2008 - 10:27:16 CDT

Original text of this message