Re: Does export operation cancel SQLs?

From: Siraj G <tosiraj(dot)g(at)gmail(dot)com>
To: Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>
Cc: Pgsql-admin <pgsql-admin(at)lists(dot)postgresql(dot)org>
Subject: Re: Does export operation cancel SQLs?
Date: 2025-02-19 10:55:18
Message-ID: CAC5iy62kJERq9hmq8YdEjJd+Ex7hwUtmCBuwwosowJ04M1RgfQ@mail.gmail.com
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Hi Laurenz!

GCP export uses pg_dump internally.
Not sure, but as soon as we stopped the export operation, the errors
stopped.

Regards
Siraj

On Wed, Feb 19, 2025 at 2:13 PM Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>
wrote:

> On Wed, 2025-02-19 at 14:01 +0530, Siraj G wrote:
> > We have PostgreSQL 16 running in GCP cloud SQL. When export job runs we
> > are noticing these messages excessively:
> >
> > db=postgres,user=postgres ERROR: canceling statement due to user request
> >
> > Does Export cancel the SQLs? If not, why are we noticing these messages
> > excessively during the export operation? The load on the instance is
> minimal.
>
> I am not sure what exactly you mean by "export". A pg_dump?
> But I am not aware of any operation that would cancel statements in other
> sessions. Perhaps someone or something in your application sends cancel
> requests when a statement is running too long, and the concurrent export
> slows down the system.
>
> Yours,
> Laurenz Albe
>
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