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help / color / mirror / Atom feedFrom: Adrian Klaver <[email protected]>
To: veem v <[email protected]>
To: pgsql-general <[email protected]>
Subject: Re: Debugging query performance in postgres
Date: Thu, 4 Sep 2025 10:49:18 -0700
Message-ID: <[email protected]> (raw)
In-Reply-To: <CAB+=1TWW+iPTtH-P+-b8CdS0fPvt2+8B7OQ5gS9ostuoPvMJqg@mail.gmail.com>
References: <CAB+=1TWW+iPTtH-P+-b8CdS0fPvt2+8B7OQ5gS9ostuoPvMJqg@mail.gmail.com>
On 9/4/25 09:57, veem v wrote:
> Hello,
> We have a situation in which we had a dml query within a procedure that
> was running fine but suddenly the plan flipped and it started running
> longer. It took us a good amount of time to identify the cause and fix
> it. So I have below questions,
What was the cause?
Postgres version
Was there any major changes in the database e.g schema changes or
quantity of data?
Is autovacuum running?
> 1)Do we have any data dictionary view or query available which gives us
> information on what were the queryids those are executing from within a
> procedure and how much time they are taking?
> 2)Also how to identify , if any specific queries has opted a different
> plan today as compared to past executions and also response time
> increased because of that?
Take a look at:
https://www.postgresql.org/docs/current/pgstatstatements.html
>
> Regards
> Veem
--
Adrian Klaver
[email protected]
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