Has the larger use of memory resulted in swapping? That could slow things
down.
Jim
-----Original Message-----
Poovathummoottil
Sent: Wednesday, June 20, 2001 11:26 AM
To: Multiple recipients of list ORACLE-L
Hi All,
We have small data warehouse database. Some queries
against some fact tables which are in the range of 30
to 40 GB are often causing full table scans. We had
the SORT_AREA_SIZE set to 1M and we were seeing a
memory sort of 99%. But the number of queries which
used the disk sort was around 500 for a week. I plan
to increase the sort area size according to the
formula given in Steve Adams' website and tested a few
queires to use a SORT_AREA_SIZE of 86M and found that
all the quries which used the larger sort_area_size
actually ran slower than the ones which used 1M
sort_area_size.
Could some one explain this behaviour?
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