Re: Undo Retention of 5 days; anyone?
- From: Connor McDonald <hamcdc@xxxxxxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Thu, 12 Feb 2004 06:14:33 +0000 (GMT)
I'd say the issue is not "5 days", but how much is "5 days worth of
transactions". If there is
lots (of txns) thats sounds like a very very big undo tablespace...It might
almost be easier just
to have 5 copies of the database, marked "today", "today-minus-one" etc - which
would be far
quicker to query :-)
Cheers
Connor
--- Arup Nanda <orarup@xxxxxxxxxxx> wrote: > List,
> I have a very unusual request from users to have UNDO_RETENTION set to 5
> days. Normally I set to
> about 5 hours, not days. Don't ask why. They have inherited a bad design that
> requires flashing
> back to 5 days ago and, no, they can't redesign it.
>
> I'm curious if anyone has actually done it, i.e setting it to a very high
> value. Any input will
> be highly appreciated.
>
> Thanks a lot in advance.
>
> Arup
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=====
Connor McDonald
Co-author: "Mastering Oracle PL/SQL - Practical Solutions" - available now
web: http://www.oracledba.co.uk
web: http://www.oaktable.net
email: connor_mcdonald@xxxxxxxxx
"GIVE a man a fish and he will eat for a day. But TEACH him how to fish,
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