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
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