Re: PostgreSQL hanging on new connections?

From: hubert depesz lubaczewski <depesz(at)depesz(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: PostgreSQL hanging on new connections?
Date: 2010-11-29 18:24:02
Message-ID: 20101129182402.GA8975@depesz.com
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On Mon, Nov 29, 2010 at 01:23:00PM -0500, Tom Lane wrote:
> hubert depesz lubaczewski <depesz(at)depesz(dot)com> writes:
> > straced postmaster when the problem was happening, and I was opening new
> > connections. strace looks like this:
> > [ backend hangs on semop immediately after reading global/pg_database ]
>
> It looks like something had exclusive lock on the database that new
> connections wanted to connect to. AFAICS the only action in 8.3 that
> would do that would be a DROP DATABASE or RENAME DATABASE. What was
> that other session doing?

just some select.

as far as I know there are no backends with such commands - drop/rename
db.

depesz

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