Re: I can't cancel/terminate query.

From: Melvin Davidson <melvin6925(at)gmail(dot)com>
To: Edmundo Robles <edmundo(at)sw-argos(dot)com>
Cc: "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org>
Subject: Re: I can't cancel/terminate query.
Date: 2017-07-13 19:47:27
Message-ID: CANu8Fiwcx+ia0Y4RU0KnZahniQLJnWLhzcHG-86uKHY+3LK1mA@mail.gmail.com
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On Thu, Jul 13, 2017 at 2:45 PM, Edmundo Robles <edmundo(at)sw-argos(dot)com>
wrote:

> i executed the commands many times like superuser but that queries
> still running :(
>
> On Thu, Jul 13, 2017 at 11:10 AM, Melvin Davidson <melvin6925(at)gmail(dot)com>
> wrote:
>
>>
>>
>> On Thu, Jul 13, 2017 at 11:57 AM, Edmundo Robles <edmundo(at)sw-argos(dot)com>
>> wrote:
>>
>>> Hi! i have many too long time queries, the oldest is almost 16
>>> days, so i tried to cancel and terminate with pg_cancel_backend and
>>> pg_terminate_backend but queries is still running.
>>>
>>> STIME ELAPSED ELAPSED %CPU PID COMMAND
>>> jun27 15-23:05:46 1379146 0.3 29660 postgres: argos_admin bdkairos
>>> 127.0.0.1(55605) SELECT
>>> jun27 15-23:05:46 1379146 0.3 29659 postgres: argos_admin bdkairos
>>> 127.0.0.1(55604) SELECT
>>> jun27 15-23:05:46 1379146 0.3 29658 postgres: argos_admin bdkairos
>>> 127.0.0.1(55603) SELECT
>>> jun27 15-23:05:16 1379116 0.3 29909 postgres: argos_admin bdkairos
>>> 127.0.0.1(55767) SELECT
>>> jun27 15-23:04:51 1379091 0.3 30097 postgres: argos_admin bdkairos
>>> 127.0.0.1(55909) SELECT
>>> jun27 15-23:03:49 1379029 0.3 30661 postgres: argos_admin bdkairos
>>> 127.0.0.1(56303) SELECT
>>> ...
>>> What should i do to safely close that queries, before to use kill
>>> command in linux?
>>>
>>> I have Postgres 9.4 running on debian jessie.
>>>
>>>
>>>
>>> --
>>>
>>>
>> T
>>
>> *o cancel a process with pg_terminate_backend, you need to be a
>> superuser.*
>> *So first;*
>>
>> *SET ROLE postgres;*
>>
>> Then you should be able to
>> *SELECT **pg_terminate_backend(<pid>); * Where <pid> is the pid of
>> process you want to termnate.
>> --
>> *Melvin Davidson*
>> I reserve the right to fantasize. Whether or not you
>> wish to share my fantasy is entirely up to you.
>>
>
>
>
> --
>
>

*If you are running on Linux, then:*

*sudo su*

*kill <pid> *

*Where <pid> is the same as in pg_terminate_backend(<pid>) *

--
*Melvin Davidson*
I reserve the right to fantasize. Whether or not you
wish to share my fantasy is entirely up to you.

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