http://www.ixora.com.au/tips/creation/bsq.htm
suggests that a non-zero pctincrease may be viable,
with the reasoning being based on deferred rollback
segments.
Rumour has it, Oracle 9i.2 will have a lmt system
tablespace which will make the argument moot.
hth
connor
- Jared Still <jkstill_at_cybcon.com> wrote: >
> The Oracle8i Admin Guide, Chapter 19, General
> Management of Schema Objects:
>
> Give guidelines for setting storage parameters for
> data dictionary tables.
>
> Setting PCINCREASE to 50 is an artifact from Oracle
> 6 and early releases of 7
> which had a rather limited number of extents.
>
> Jared
>
>
> On Tuesday 18 December 2001 05:30, Mercadante,
> Thomas F wrote:
> > Kimberly,
> >
> > I would agree with you if an experienced DBA makes
> the decision to change
> > the storage parameters, and they absolutely know
> what the benfits would be.
> >
> > Generally speaking though, I think changing
> anything in the SYSTEM
> > tablespace is bad practice.
> >
> > Tom Mercadante
> > Oracle Certified Professional
> >
> >
> > -----Original Message-----
> > Sent: Monday, December 17, 2001 8:45 PM
> > To: Multiple recipients of list ORACLE-L
> >
> >
> > Actually, I would not ignore the storage
> parameters of the SYSTEM
> > tablespace.
> > There are legit reasons to change the pctincrease
> to 0. If you leave it at
> > 50 then SMON (or PMON can't remember at the
> moment) will try to coalesce
> > the tablespace every time it wakes up. Its work
> it has to do that it
> > really does
> > not need to do. Better off scheduling to happen
> at your time schedule.
> >
> > -----Original Message-----
> > Thomas F
> > Sent: Monday, December 17, 2001 7:45 AM
> > To: Multiple recipients of list ORACLE-L
> >
> >
> > Ken,
> >
> > Do yourself a favor. Ignore the SYSTEM tablespace
> storage params. The
> > ONLY thing you should concern yourself in regard
> with the SYSTEM tablespace
> > is if the file needs to extend itself because it
> is too full. All other
> > storage parameters are created by Oracle at
> database create time and should
> > not be changed.
> >
> > For other tablespaces, you can change this
> parameter anytime after the
> > tablespace has been created. It will not,
> however, change existing
> > extents, but will be used when new extents are
> allocated.
> >
> > Hope this helps.
> >
> > Tom Mercadante
> > Oracle Certified Professional
> >
> >
> > -----Original Message-----
> > Sent: Monday, December 17, 2001 10:16 AM
> > To: Multiple recipients of list ORACLE-L
> >
> >
> > Is there any way that I can change the PCTINCREASE
> for the SYSTEM
> > tablespace without recreating the DB? For some
> reason the person who
> > created the DB I am working on set PCTINCREASE to
> 50 (or didn't did not
> > include this parameter). I am using this DB for
> a data conversion so
> > there is no software connected to it and in turn
> no users on it.
> >
> > Thanks,
> > Ken Janusz, CPIM
> > Database Conversion Lead
> > Sufficient Systems, Inc.
> > --
> > Please see the official ORACLE-L FAQ:
> http://www.orafaq.com
> > --
> > Author: Ken Janusz
> > INET: ken.janusz_at_sufsys.com
> >
> > Fat City Network Services -- (858) 538-5051
> FAX: (858) 538-5051
> > San Diego, California -- Public Internet
> access / Mailing Lists
> >
>
> > To REMOVE yourself from this mailing list, send an
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> > (or the name of mailing list you want to be
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> > Please see the official ORACLE-L FAQ:
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> > --
> > Author: Mercadante, Thomas F
> > INET: NDATFM_at_labor.state.ny.us
> >
> > Fat City Network Services -- (858) 538-5051
> FAX: (858) 538-5051
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> >
>
> > To REMOVE yourself from this mailing list, send an
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> --
> Please see the official ORACLE-L FAQ:
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> --
> Author: Jared Still
> INET: jkstill_at_cybcon.com
>
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Received on Tue Dec 18 2001 - 15:56:19 CST
