Re: Cannot DROP while process running

Restarted the PG service before reading your email, so I can't verify - but
your idea about uncomitted prepared transactions may be the culprit.

I am using the ruby PG gem's exec method and then closing the connection.
When I get some time I will fire off a few tests and see if I get the same
unexpected locking.

Thank you folks for taking the time to reply.

2012/4/10 Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>

> Steve Horn <steve(at)stevehorn(dot)cc> writes:
> > Here is the result of this select:
> > select datname, procpid, current_query from pg_stat_activity;
>
> > As you can see, there appears to be no connection to the other tables
> with
> > the AccessShareLocks.
>
> Well, it's hard to tell what other locks those transactions have already
> got. You really ought to be looking in pg_locks not just
> pg_stat_activity.
>
> BTW, another thing that occasionally trips people up is unintended use
> of a prepared transaction (that they then forget to commit or roll back).
> Does the pg_prepared_xacts view show anything?
>
> regards, tom lane
>

--
Steve Horn