Hello Devrim, ya when i run its dispalying like [root@CentOS-60-32-minimal lib]# rpm -qa | grep postgresql postgresql90-docs-9.0.6-1PGDG.rhel6.i686 postgresql84-libs-8.4.9-1PGDG.rhel6.i686 postgresql90-libs-9.0.6-1PGDG.rhel6.i686 postgresql90-contrib-9.0.6-1PGDG.rhel6.i686 postgresql90-server-9.0.6-1PGDG.rhel6.i686 postgresql90-9.0.6-1PGDG.rhel6.i686 postgresql90-devel-9.0.6-1PGDG.rhel6.i686 postgresql-libs-8.4.9-1.el6_1.1.i686 so, is it the problem with my postgres....?? ----- Regards, Suresh Hosur -- View this message in context: http://postgresql.1045698.n5.nabble.com/psql-error-psql-symbol-lookup-error-psql-undefined-symbol-PQconnectdbParams-tp5104950p5105189.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general