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Re : ./changeDBServer.sh --console -- Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.

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Hi,

May I know is this the first time you are trying to use Pgsql on this machine ? YES. PostgreSQL is / was installed solely for the ManageEngine.

If so, then may we know the installation of our application is successful ? Yes, ManageEngine version 9.1 setup completed and reported that it installed successfully.


Also, check is there's a firewall / anti-virus which could might be blocking he port 65432 ? No antivirus and no firewall. 
root@sd:/opt/ServiceDesk/bin# ufw status
-su: ufw: command not found


root@sd:/opt/ServiceDesk/bin# grep port /etc/postgresql/9.1/main/postgresql.conf
port = 5432                             # (change requires restart)
                                        # supported by the operating system:
                                        #   %r = remote host and port



root@sd:/opt/ServiceDesk/bin# psql -U postgres -h localhost
Password for user postgres:
psql (9.1.16)
SSL connection (cipher: DHE-RSA-AES256-SHA, bits: 256)
Type "help" for help.

postgres=#


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