Re: [SPAM] psql 9.3 automatic recovery in progress

On Mon, Oct 10, 2016 at 6:15 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:

> Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com> writes:
> > On 10/10/2016 12:18 PM, Periko Support wrote:
> >> I was on vacation, but the issue have the same behavior:
>
> > Actually no. Before you had:
>
> > 2016-09-12 09:00:01 PDT LOG: server process (PID 23958) was
> > terminated by signal 9: Killed
>
> > Now you have:
>
> > 2016-10-10 07:50:09 PDT WARNING: terminating connection because of
> > crash of another server process
>
> Most likely it *is* the same thing but the OP trimmed the second log
> excerpt too much. The "crash of another server process" complaints
> suggest strongly that there was already another problem and this
> is just part of the postmaster's kill-all-children-and-restart
> recovery procedure.
>
> Now, if there really is nothing before this in the log, another possible
> theory is that something decided to send the child processes a SIGQUIT
> signal, which would cause them to believe that the postmaster had told
> them to commit hara-kiri. I only bring this up because we were already
> shown a script sending random SIGKILLs ... so random SIGQUITs wouldn't be
> too hard to credit either. But the subsequent log entries don't quite
> square with that idea; if the postmaster weren't already expecting the
> children to die, it would have reacted differently.
>

The better solution is to do this in one query and more safely:

select pid, usename, datname, pg_terminate_backend(pid)
FROM pg_stat_activity
WHERE usename = 'openerp'
AND now() - query_start > '15 minutes'::interval;

This will use the builtin 'pg_terminate_backend for you in one shot.

--Scott

>
> regards, tom lane
>
>
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--
--
Scott Mead
Sr. Architect
*OpenSCG <http://openscg.com>*
http://openscg.com