"J S B" <jsbali@gmail.com> writes:
> There was some problem with postmaster.pid file, so i just removed it.
Without bothering to stop the old postmaster first, I take it.
At this point your best bet is to find out the PID of the old postmaster
with "ps" and then kill it with "kill -INT <pid>". I suspect you've
also been sloppy about which userid you've been starting the postmaster
under ... you have to be consistent about that.
regards, tom lane