From: | "Gauthier, Dave" <dave(dot)gauthier(at)intel(dot)com> |
---|---|
To: | Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com>, Vick Khera <vivek(at)khera(dot)org> |
Cc: | pgsql-general <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: killing idle attaches without killing others |
Date: | 2010-08-04 14:50:02 |
Message-ID: | 482E80323A35A54498B8B70FF2B87980046602C8B1@azsmsx504.amr.corp.intel.com |
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Lists: | pgsql-general |
How does PG determine if a process is <IDLE> ? It there some sort of timeout? I want to be able to distinguish between somene who's interrupted on the phone for a couple minutes vs the guy who left the program running over the weekend.
-----Original Message-----
From: pgsql-general-owner(at)postgresql(dot)org [mailto:pgsql-general-owner(at)postgresql(dot)org] On Behalf Of Dean Rasheed
Sent: Wednesday, August 04, 2010 10:26 AM
To: Vick Khera
Cc: pgsql-general
Subject: Re: [GENERAL] killing idle attaches without killing others
On 4 August 2010 15:18, Vick Khera <vivek(at)khera(dot)org> wrote:
> On Wed, Aug 4, 2010 at 10:03 AM, Gauthier, Dave <dave(dot)gauthier(at)intel(dot)com>
> wrote:
>>
>> How can one kill just the <IDLE> processes I see attached to a DB (from
>> pg_stat_activity) without disturbing the others? If I need to kill the idle
>> pids one ata time, which signal_name should I use for that?
>>
>>
>
> Connected to psql as a superuser, issue SELECT pg_cancel_backend(PID); where
> PID is the pid of the process to close.
That's a SIGINT, but it doesn't actually kill the process, it just
cancels it's current query.
pg_terminate_backend() sends a SIGTERM to terminate the backend. I
think that function is new to 8.4, but you can still manually send the
signal if you're on 8.3.
http://www.postgresql.org/docs/current/static/functions-admin.html
Regards,
Dean
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