Postgresql 9 connection problem

AI Rumman <rummandba@gmail.com> writes:

I have very strange problem with my application, upon occasions I get
following error when connecting to postgres. This happens without any
pattern, often happens when I run some extensive tests in my application.

Unable to connect to PostgreSQL server: server closed the connection
unexpectedly This probably means the server terminated abnormally before or
while processing the request.

Postgres logs shows no abnormalities. Moreover, I can easily connect to the
psql console and execute query at that period.

My Postgres is 9.0.1, running on CentOS 5.

Curious. What about the kernel log, is there anything there?

regards, tom lane