index blocks need to be cleaned out too...
- Original Message -----
To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com>
Sent: Saturday, October 19, 2002 7:43 AM
> "Deshpande, Kirti" wrote:
> >
> > That's sounds about right...
> >
> > - Kirti
> >
> > -----Original Message-----
> > Sent: Saturday, October 19, 2002 3:48 AM
> > To: Multiple recipients of list ORACLE-L
> >
> > when i do a count(*) an a 1.2GB table, just after an app finishes
inserting
> > 20 million records
> > i can see from iostat that, that disk is being read as well as written
to
> > !!!
> >
> > the only reason i can think of WRITES being performed while being READ
is
> > the block cleanout is being performed by the count(*) !!
> >
> > i would appreciate if anyone could explain further !
> >
> > regards
> >
> > PS: 7.3.2 on AIX, the file is raw and async_io is true
> >
>
> Kirti,
>
> This is also what I thought, but wouldn't a 'count(*)' just use the
> primary key? (Unless it is a 1.2 G unindexed table). Morover, in my mind
> a block cleanout is associated with a delete, not an insert. Might it be
> say the cleanout of temporary segments after say a direct load ?
>
> Regards,
>
> Stephane Faroult
> Oriole Software
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> Author: Stephane Faroult
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Received on Sat Oct 19 2002 - 10:18:29 CDT
