well 1 is simpler to code. :)
However, if you put all tablespaces in backup mode at once, you will be
generating a LOT of extra redo and archived logs.
That's because even if you are not currently backinf up that tablespace
(say you already HAVE backed it up), you will still have to write full
blocks to the redo log for that tablespace. So it's extra strain on the
system
- Guy Hammond <guy.hammond_at_avt.co.uk> wrote:
> Hello,
>
> Slightly unrelated question... is it better to (in pseudo code) :
>
> 1)
>
> for each tablespace loop
> put tablespace in backup mode
> end loop
>
> for each datafile in the database loop
> copy data file
> end loop
>
> for each tablespace loop
> put tablespace in normal mode
> end loop
>
>
> or 2)
>
> for each tablespace loop
> put tablespace in backup mode
> for each datafile in this tablespace loop
> copy data file
> end loop
> put tablespace in normal mode
> end loop
>
>
> What I'm doing is (2), but I notice that Rajesh is doing (1). What
> are
> the pros and cons of each approach? (I'll probably use RMAN at some
> point, anyway :0) ).
>
> Cheers,
>
> g
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
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> Author: Guy Hammond
> INET: guy.hammond_at_avt.co.uk
>
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Received on Tue Oct 02 2001 - 08:21:59 CDT
