Hi, I have installed postgresql-9.0 on my CentOS 6.0 server in the directory /usr/pgsql-9.0/. Its data directory resides in /var/lib/pgsql/9.0/ unable to run $psql dbname command when i run the commands its showing the error like: [root@CentOS-60-32-minimal ~]# su - postgres -bash-4.1$ psql msdi psql: symbol lookup error: psql: undefined symbol: PQconnectdbParams -bash-4.1$ from two days working on it am not getting the soultion. I searched around the internet got some suggestion like to run below command [root@CentOS-60-32-minimal ~]# DYLD_LIBRARY_PATH=/usr/pgsql-9.0/lib psql psql: symbol lookup error: psql: undefined symbol: PQconnectdbParams once i run it, It showing the same error so, please help me to come out from this problem... Regards, Suresh Hosur -- View this message in context: http://postgresql.1045698.n5.nabble.com/psql-error-psql-symbol-lookup-error-psql-undefined-symbol-PQconnectdbParams-tp5104950p5104950.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