what are the minimum extents on the rollback segments (specifically
r03) as well as initial and next sizes please?
If optimal is higher than the minimum extents, you're right, it can
shrink down to minimum extents*initial
but it doesn't make a lot of sense to set things up that way
- Mohammad Rafiq <rafiq9857_at_hotmail.com> wrote:
> Yes, it can be shrinked below optimal as per following details
> specially R03
> rollback segment....
> Regards
> Rafiq
>
>
> before:
> NAME EXT MB OPTSIZE ACTIVE WATER SHRINKS WRAPS
> WAITS
> STATUS
> --------------- ---- ------- ------- ------- ------- ------- --------
> ------
> -------
> SYSTEM 2 0.2 0.0 0.1 0 0
> 0
> ONLINE
> R04 57 115.8 200 0.0 115.8 0 0
> 0
> ONLINE
> R01 50 101.6 200 0.0 101.6 0 0
> 0
> ONLINE
> R02 50 101.6 200 0.0 101.6 0 0
> 0
> ONLINE
> R03 99 201.1 200 0.0 201.1 0 0
> 0
> ONLINE
>
> ----
> run script:
> SQL> alter rollback segment r03 shrink to 100M;
>
> After:
>
> NAME EXT MB OPTSIZE ACTIVE WATER SHRINKS WRAPS
> WAITS
> STATUS
> --------------- ---- ------- ------- ------- ------- ------- --------
> ------
> -------
> SYSTEM 2 0.2 0.0 0.1 0 0
> 0
> ONLINE
> R04 57 115.8 200 0.0 115.8 0 0
> 0
> ONLINE
> R01 50 101.6 200 0.0 101.6 0 0
> 0
> ONLINE
> R02 50 101.6 200 0.0 101.6 0 0
> 0
> ONLINE
> R03 50 101.6 200 0.0 201.1 5 0
> 0
> ONLINE
>
>
>
>
> Reply-To: ORACLE-L_at_fatcity.com
> To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
> Date: Wed, 30 Jan 2002 07:25:30 -0800
>
> no, you can't shrink a rollback segment below the optimal value
>
> --- Sinard Xing <sinardyxing_at_bcs-ach.com.sg> wrote:
> > Hi,
> >
> >
> > Assume
> > INITIAL * MINEXTENT = 2M and also = OPTIMAL
> >
> > Do you think
> > ALTER ROLLBACK SEGMENT rbs SHRINK TO 1M;
> >
> > will work ?
> >
> >
> >
> > Thanks,
> >
> > Sinardy
> > --
> > Please see the official ORACLE-L FAQ: http://www.orafaq.com
> > --
> > Author: Sinard Xing
> > INET: sinardyxing_at_bcs-ach.com.sg
> >
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>
> MOHAMMAD RAFIQ
>
>
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> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Mohammad Rafiq
> INET: rafiq9857_at_hotmail.com
>
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Great stuff seeking new owners in Yahoo! Auctions!
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Received on Wed Jan 30 2002 - 12:46:39 CST
