Re: [GENERAL] I can't cancel/terminate query.

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От Melvin Davidson
Тема Re: [GENERAL] I can't cancel/terminate query.
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Msg-id CANu8FiyH_+Uu09G2ZcC2FaE+52nh3fB5fy7DiY0-nbKdvtEbUg@mail.gmail.com
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Ответ на [GENERAL] I can't cancel/terminate query.  (Edmundo Robles <edmundo@sw-argos.com>)
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On Thu, Jul 13, 2017 at 11:57 AM, Edmundo Robles <edmundo@sw-argos.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.
 


--


To 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.

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