Regarding postgres 9.1 with Redhat Linux

Dear admin,

                   We have installed postgres 9.1 rpm package to red hat Linux  2.6.18- x86_64 x86_64 x86_64 GNU/Linux. After we setup and install database we can create data folder on /app/postgres/oe. But when we try to start up the database as  ./pg_ctl -D /app/postgres/oe start. It was giving the following error. Could you please advise how to solve this problem? Or should we back up data and re-install everything from begin? The error we received as following.

LOG:  could not bind IPv4 socket: Address already in use

HINT:  Is another postmaster already running on port 5432? If not, wait a few seconds and retry.

WARNING:  could not create listen socket for "localhost"

FATAL:  could not create any TCP/IP sockets

Your faster response if very much appreciated. Thank you.

Regards,

Myint WIn