Getting error while trying to login to Database

We are trying to connect to Database with port 1521 we are getting the error as like below.

-bash-4.2$ ps-bash-4.2$ psql -p 1521
psql: error: could not connect to server: No such file or directory
Is the server running locally and accepting
connections on Unix domain socket “/var/run/postgresql/.s.PGSQL.1521”?

We have 2 ports hosted on the machine and we are able to login to other port with out any issue, Could some one help me as we are stuck with production .

first of all, this is a german speaking forum. 2nd, try to add -h localhost or -h server_ip.

Sorry , I feel this looks best hence posted on this forum.

I did the same getting the same error

The default port is 5432 - did you actually change that? If you did, then most likely Postgres service isn’t running.