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Re: how determine unused space for indexes

From: Richard Foote <richard.foote_at_bigpond.com>
Date: Fri, 5 Jul 2002 23:34:31 +1000
Message-ID: <f9hV8.28234$Hj3.86584@newsfeeds.bigpond.com>


Ooops, 8.0.5. Forget LMT

Richard
"Richard Foote" <richard.foote_at_bigpond.com> wrote in message news:a8hV8.28233$Hj3.87325_at_newsfeeds.bigpond.com...
> Hi Mikael,
>
> INDEX_STATS is your best bet and it contains all the statistics you're
> after. It only contains the latest analyze validate structure data so
you'll
> need to write a script to dump the data to another table for each index.
>
> Consider Locally Managed Tablespaces with smallish uniform extent size.
> Small indexes don't waste too much space, large indexes use many extents
but
> performance should be hunky dory provided your not in the many 1000s (and
> even then you could be OK).
>
> Good Luck
>
> Richard
> "Mikael Kruse" <mikael.kruse_at_ehs.ericsson.se> wrote in message
> news:ag43v0$ech$1_at_newstoo.ericsson.se...
> > Hi,
> >
> > I'm suspecting that a database that I use for test could be created with
a
> > lot smaller extents than current settings. To investigate this, I want
to
> > find out how much of the space allocated for my indexes (many indexes)
> > that's really used. I don't know if there's a High Water Mark for index
> > segments as there is for table segments, but if there is, I want to know
> how
> > much of the space allocated that's below/above High Water Mark. Can
anyone
> > help me with this? I need a method that can be applied on many indexes,
> > since I can't go through them one by one, there are far too many...
> >
> > Oracle version 8.0.5
> >
> > Thankful for assistance
> > /Mikael
> >
> >
>
>
Received on Fri Jul 05 2002 - 08:34:31 CDT

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