Re: Debugging deadlocks

Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> writes:

> Alvaro Herrera <alvherre(at)dcc(dot)uchile(dot)cl> writes:
> > On Fri, Apr 01, 2005 at 10:14:07PM -0500, Paul Tillotson wrote:
> >> ...
>
> > Well, at that point you need to take a lock in order to be able to
> > manage locks. Managing not to step on your own feet in that scenario
> > is complex, to say the least, if not downright impossible.
>
> I looked at Paul's first message and thought "nah, that won't work
> because ... because ... hmm ... hmmm ..."

For what it's worth, this would be very similar to how Oracle handles such
locks. In that case there's a fixed amount of space per page reserved in
advance for storing locks.

Actually I think it's a bit more complicated. But that's the idea.

--
greg