I meant "monotonically increasing index that is also being _deleted_ " only.
Many thanx to you and Tanel for the explanation.
Regards
Naveen
>-- --Original Message-- --
>From: John Kanagaraj [mailto:john.kanagaraj@(protected)]
>Sent: Wednesday, February 18, 2004 10:30 PM
>To: 'oracle-l@(protected) '
>Subject: RE: Rebuild Indexes
>
>
>Naveen,
>
>I believe the problem is not with a monotonically increasing
>index (which
>should NOT be rebuilt as it is of no use) - rather it is with a
>monotonically increasing index that is also being _deleted.
>This is typical
>of indexes on FIFO-type tables such as the
>FND_CONCURRENT_REQUESTS in Apps
>(any version). In the latter case, you should perform a
> 'one-time ' index
>rebuild of such monotonically-increasing, followed by regular
>COALESCE of
>the indexes to 'reclaim ' 'lost ' space. Jonathan/Richard Foote
>might have
>something to add on this....
>
>John Kanagaraj < > <
>DB Soft Inc
>Phone: 408-970-7002 (W)
>
>Listen to great, commercial-free christian music 24x7x365 at
>http://www.klove.com
>
>** The opinions and facts contained in this message are
>entirely mine and do
>not reflect those of my employer or customers **
>
> >-- --Original Message-- --
> >From: oracle-l-bounce@(protected)
> >[mailto:oracle-l-bounce@(protected)] On Behalf Of Naveen,
> >Nahata (IE10)
> >Sent: Tuesday, February 17, 2004 11:24 PM
> >To: oracle-l@(protected)
> >Subject: RE: Rebuild Indexes
> >
> >
> >John,
> >
> >Would it be advisable to go for Index rebuilds in case of
> >index based on
> >monotonically increasing columns? As much as I understand (and
> >I must admit,
> >i don 't know much about the internals of indexes), in case of
> >such indexes
> >the problem of 'leaf block split ' should not happen.
> >
> >Regards
> >Naveen
> >
> > >-- --Original Message-- --
> > >From: John Kanagaraj [mailto:john.kanagaraj@(protected)]
> > >Sent: Wednesday, February 18, 2004 12:30 PM
> > >To: 'oracle-l@(protected) '
> > >Subject: RE: Rebuild Indexes
> > >
> > >
> > >Vidya,
> > >
> > >If you are collecting (and storing) STATSPACK data, you might want to
> > >baseline V$SYSSTAT values and look for spurts in 'leaf node
> > >splits ' after
> > >rebuilds....
> > >
> > >John Kanagaraj < > <
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