Mark Rostron <mrostron(at)ql2(dot)com> writes:
> We are running an 8.3.10 instance.
> I need to make a change to pg_hba.conf on the fly.
> Is it possible to restart just the listener for the database without cycling the postmaster?
There is no separate "listener". However, it's sufficient to SIGHUP the
postmaster, you don't have to restart it for pg_hba.conf changes.
regards, tom lane