I changed the conf as you wrote. But now the time is changed from 50 sec to 65 sec. :(
I have not more 256 MB ram now.
When I execute the query the Postmaster takes about 1.8 MB
Postgres session takes 18 MB ram only.
& psql takes 1.3 MB.
After the query finishes the Postgres session reducess memeory and just uses 10 MB ram.
Can you post explain analyze result for the query?
Shridhar
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