How do I tell?

Hi All,

I'm currently running postgres 7.1b3 (Yes, I know it's an older version),
and I'm seeing some strange behavior.

I've got a web browser and a jserv engine that start up 40 connections to
the database when they are started. When load on the database machine gets
high, I'll have 1 or 2 processes that won't ever end. They'll just
continue, soaking up CPU until I kill the database server.

My question isn't so much about the behavior itself (I'm presuming I've done
something bone-headed), but about the debugging of the behavior.

Is there any way in which I can see exactly the query that a postgres
process is processing? I know that with 'ps -auxww' I can see the state of
a given postgres process (idle/SELECT/SELECT waiting)...but how do I find
out that that SELECT really is:
"SELECT * from everything joined with everything else and a couple of outer
joins, order by, group by and limit"

--
Ken Corey CTO http://www.atomic-interactive.com