Patrick Hatcher <PHatcher(at)macys(dot)com> writes:
> Doing a Vacuum Analyze on a table and it's been hanging for at least 2
> hours. I could see no other users hitting the table at the time. This is
> the second time this has happened on this particular table and I can't
> seem to pin point the issue. If I kill the PID and restart the vacuum
> analyze it works fine. Any suggestion where I start searching?
Next time, please attach to the vacuuming backend with gdb and get a
stack trace. The pg_locks output doesn't tell us anything except that
the problem isn't a lock :-(
regards, tom lane