Re: Max connections reached without max connections reached

From: James Sewell <james(dot)sewell(at)jirotech(dot)com>
To: Amul Sul <sulamul(at)gmail(dot)com>
Cc: Dilip Kumar <dilipbalaut(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-general <pgsql-general(at)postgresql(dot)org>
Subject: Re: Max connections reached without max connections reached
Date: 2021-12-21 00:25:54
Message-ID: CAANVwEsZf0Y1XR1ePtMu_aoHdAKFi3Z2TZzOqFPiUqD0n7a7ug@mail.gmail.com
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> Ok it is possible, I've got a C extension up and running which hooks
> ExecutorStart, then once for each TX ( I monitor the nesting depth like in
> pg_stat_statements, and only attach at the top level) attaches a sub
> transaction callback, tracking start subtransaction events and incrementing
> a counter / keeping track of the worst offenders in a hashmap.
>

Sorry that should be ExecutorRun - although I'm a little confused about
which is the correct choice.

-James

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