Rachel,
Desired info as follows:
Min extents 20
initial 2M
next 2M
question was whether it works or not. Yes,it works...
As regard your comment
itsn't make a lot of sense to set things up that way
you are right but it depends what type of rollback segments and its usage
you are dealing with....you might require to use shrink command to bring
down usage to a certain level,occassionally.
However, it is my humble reply to our Oracle GODESS
Hope you don't mind...
Regards
Rafiq
Reply-To: ORACLE-L_at_fatcity.com
To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
Date: Wed, 30 Jan 2002 10:35:28 -0800
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
doebut
- 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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INET: wisernet100_at_yahoo.com
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Received on Wed Jan 30 2002 - 13:42:57 CST
