From: Lewis Kapell <lkapell@setonhome.org>
To: pgsql-admin@postgresql.org
Subject: Re: How to disconnect a single user in Postgresql 8.2.5 from a database
Date: Tue, 20 Apr 2010 09:52:55 -0400
Message-ID: <4BCDB1B7.1010603@setonhome.org> (raw)
In-Reply-To: <h2vdcc563d11004192007u167088d7g77900fca2c3a40e3@mail.gmail.com>
References: <480516.98593.qm@web28311.mail.ukl.yahoo.com>
<l2nc3a7de1f1004190852nbbfb67f3v9cba052fdbb0b599@mail.gmail.com>
<z2j4ec1cf761004191824ibad49657odff2914710d343fc@mail.gmail.com>
<15823.1271729409@sss.pgh.pa.us>
<h2vdcc563d11004192007u167088d7g77900fca2c3a40e3@mail.gmail.com>
pg_cancel_backend() and pg_terminate_backend() do different things.
From the documentation:
pg_cancel_backend(pid int) Cancel a backend's current query
pg_terminate_backend(pid int) Terminate a backend
On 4/19/2010 11:07 PM, Scott Marlowe wrote:
> On Mon, Apr 19, 2010 at 8:10 PM, Tom Lane<tgl@sss.pgh.pa.us> wrote:
>> Josh Kupershmidt<schmiddy@gmail.com> writes:
>>> pg_terminate_backend() is just a SQL wrapper around:
>>> kill -SIGTERM [backend PID]
>>
>>> For versions before 8.4: if you can SSH in to the server, run the
>>> above on the PID of the backend your user is connected to, and that
>>> should terminate their connection.
>>
>> The reason the function isn't there before 8.4 is that that's not
>> promised to work before 8.4 ... most of the time it will work, but
>> once in awhile you could get nasty side-effects.
>
> So, pg_cancel_backend(pid) is the 8.3 version, that may or may not
> always work then, right?
>
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To: pgsql-admin@postgresql.org
Cc: lkapell@setonhome.org
Subject: Re: How to disconnect a single user in Postgresql 8.2.5 from a database
In-Reply-To: <4BCDB1B7.1010603@setonhome.org>
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