Re: Request: pg_cancel_backend variant that handles 'idle in transaction' sessions

From: "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>
To: Merlin Moncure <mmoncure(at)gmail(dot)com>, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Magnus Hagander <magnus(at)hagander(dot)net>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Request: pg_cancel_backend variant that handles 'idle in transaction' sessions
Date: 2015-11-04 20:56:18
Message-ID: 563A70F2.5060904@commandprompt.com
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On 11/04/2015 12:31 PM, Merlin Moncure wrote:

>> My issue isn't long statements, but broken client, that is broken in wrong
>> state - connect is still active, but no any statement will coming.
>
> Right, 'Idle in transaction'. Agree that a setting directed purely at
> that problem could set a much lower timeout, say, 5 minutes or less
> since it almost never comes up in real applications. In fact, in 15
> years of postgres development, I've never seen 'idle transaction' that
> indicated anything but application malfunction.

I can +1 that.

>
> That being said, hour timeout for general case would work for me. It
> would only have to be set lower for very busy OLTP databases where
> continuous vacuum is essential. In those cases, I don't mind forcing
> all batch processes to disclose in advance they are running long.

Yeah about an hour sounds right.

JD

>
> merlin
>
>

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