Can you tell us how do you run query at night?
IS it via Odbc? Or direct by pgsql script in cron?
Pozdrawiam
Andrzej Gerasimuk
Andrzej Gerasimuk
From: liam saffioti <liam.saffiotti@xxxxxxxxx>
Sent: Wednesday, December 8, 2021 4:19:33 PM
To: Mladen Gogala <gogala.mladen@xxxxxxxxx>
Cc: pgsql-admin <pgsql-admin@xxxxxxxxxxxxxxxxxxxx>
Subject: Re: AW: postgresql long running query
Sent: Wednesday, December 8, 2021 4:19:33 PM
To: Mladen Gogala <gogala.mladen@xxxxxxxxx>
Cc: pgsql-admin <pgsql-admin@xxxxxxxxxxxxxxxxxxxx>
Subject: Re: AW: postgresql long running query
Hi everyone,
Thank you for your help. But my query is not always slow. It works fast under normal conditions, but in a way that I don't understand it works very slow at some times.
I think there may be a different reason why a query that takes 800ms, in general, takes 18 minutes at a time.
Thanks a lot
Liam
Mladen Gogala <gogala.mladen@xxxxxxxxx>, 8 Ara 2021 Çar, 17:11 tarihinde şunu yazdı:
On 12/8/21 06:13, Dischner, Anton wrote:
Do optimizer hints in PG exists?
Obviously not: https://wiki.postgresql.org/wiki/OptimizerHintsDiscussion
Yes, they do exist: http://pghintplan.osdn.jp/pg_hint_plan.html
Packages can be downloaded here: https://osdn.net/projects/pghintplan/releases/73862
There is no package for version 14, you will have to build it from the source:
https://github.com/ossc-db/pg_hint_plan
-- Mladen Gogala Database Consultant Tel: (347) 321-1217 https://dbwhisperer.wordpress.com
