Tom Lane wrote:
> Abhijit Menon-Sen <ams(at)2ndquadrant(dot)com> writes:
> > In the past, we've had situations where "everything is hung" turned out
> > to be because of a script that ran manual VACUUM that was holding some
> > lock. It's admittedly not a huge problem, but it might be useful if a
> > manual VACUUM could be cancelled the way autovacuum can be.
>
> I think the real answer to that is "stop using manual VACUUM".
As much as I'm a fan of autovacuum, that's not always possible.
--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services