free bufer waits - solved

From: Rahul <rahul_at_ratelindo.co.id>
Date: Tue, 25 Sep 2001 03:54:37 -0700
Message-ID: <F001.0039773A.20010925040123@fatcity.com>

list,
finally i was able to solve the free buffer waits in my instance. These waits
were saturating the db and the response time of a select count(*) on a 5 million
rows was 7 hours !!!

i altered the table to include PARALLE 3, and specified the min_parallel server = 3
bounced the db and voila !! all the waits vanished !!

another problem was ... the scattered read of a FTS was NOT reaching multiblock_count
after altering the tables... the FTS is also reading the required no. of blocks !!

when i do a select count(*) with a NOPRALLEL hint it still makes free buffer waits and other
problems...

CONCLUSION
i am not able to figure out why ???

TIA
Rahul

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Author: Rahul
  INET: rahul_at_ratelindo.co.id

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