I'm not sure either as I am rereading a document by
Craig Shallamaher where he is saying to change pctused
and pctfree in order to reduce data block
fragmentation. I have to test that.
At my new job, the DBAs are doing massive
export/import to reduce fragmentation... (with their
dictionnary managed tablespace)
- Jared Still <jkstill_at_cybcon.com> a écrit : >
> Are you sure about that John?
>
> On Tuesday 24 September 2002 04:28,
> John.Hallas_at_vodafone.co.uk wrote:
> > No, it is not retrospective.
> > You are setting parameters to be used when the
> next extent is created.
> > A better example is when setting next extent size
> to be different than the
> > existing extent size (dictionary managed
> tablespaces only).
> > It does not alter all the existing extents it only
> works on the next one
> > that is created.
> >
> > HTH
> >
> > John
> >
> > -----Original Message-----
> > Sent: 24 September 2002 10:58
> > To: Multiple recipients of list ORACLE-L
> >
> >
> >
> > Is the effect of modifying PCTFREE/PCTUSED
> immediate ?
> >
> >
> > If I do an "ALTER TABLE <tablename> PCTFREE 99
> PCTUSED1",
> > does this take effect immediately, even for
> existing blocks.
> > [If so, existing blocks would not get new rows
> inserted].
> > Or is it effective only in new Extents ? In that
> case,
> > existing blocks in existing Extents still use the
> old
> > PCTFREE/PCTUSED parameters and keep re-entering
> the
> > FreeList.
> >
> > Hemant K Chitale
> > http://hkchital.tripod.com
> --
> Please see the official ORACLE-L FAQ:
> http://www.orafaq.com
> --
> Author: Jared Still
> INET: jkstill_at_cybcon.com
>
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Received on Tue Sep 24 2002 - 11:28:26 CDT
