"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 -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Stephane Faroult INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
