Re: postmaster, but not pg_ctl -i -i

"Aurangzeb M. Agha" <aagha@bigfoot.com> writes:
> $ pg_ctl start -D . -o -i
> postmaster successfully started
> FATAL: StreamServerPort: bind() failed: Address already in use
>         Is another postmaster already running on port 5432?
>         If not, wait a few seconds and retry.
> /usr/local/pgsql/bin/postmaster: cannot create INET stream port

> BUT, if I do:

> $ postmaster -D . -o -i -p 5432

These are not the same command: in particular -o means completely
different things.  I expect that

$ postmaster -D . -i -p 5432

(which is what pg_ctl will do) will fail.

You may be able to find what process is using TCP port 5432 by using
netstat or lsof or some such tool.

            regards, tom lane