[ADMIN] postmaster failing to shut down

[Mona Gamboa]

Hi, I'm new to PostgreSQL--have been using it for 3-4 months now. I've been porting our Oracle DB and applications to PostgreSQL and I am using the latest release 7.3.   Anyway, when I do try to shutdown the postmaster with the following command:   pg_ctl -D /home/postgres/pgsql/DATA stop -m fast   I get the following: waiting for postmaster to shut down................................................................ failed pg_ctl: postmaster does not shut down   Any ideas why this is happening?  And what I can do to avoid this?   Thank You.   Mona Gamboa