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Home -> Community -> Mailing Lists -> Oracle-L -> how to improve sequential scans ?
list (AIX, 7.3.2)
5 clients are shooting the same sql to read data from an 18 million rows
table.
each time the sql uses a different literal value in the where clause... no
bind variables.
I CANNOT TOUCH THE APPLICATION, and have been given the task to re-configure
the
DB to increase performance.
i have moved the table and it;s associated index to separate disks. and
iostat show that
only that only those two disks are being read.
the session wait show that all the times the sessions are waiting on "db file sequential read"
the db file being sequentially read in the above sessiion is the TABLE from
which
all the sid's are reading
the table is analyzed and the sql's issued use the index.
how can i further tune this config. ?
TIA Rahul
PS: my next step is to put the files on raw disks.
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--
Author: Rahul
INET: rahul_at_ratelindo.co.id
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