Googling with the actual error message "message type" "arrived from server while idle", I found this:

http://archives.postgresql.org/pgsql-bugs/2009-09/msg00160.php

(maybe pgbouncer is useful? A fast lightweight connection pooler for PostgreSQL, made by skype).

In reply to Re: DB update issue by erix
in thread DB update issue by santhosh_89

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