Re: xmin increasing within a transaction block?

From: Luca Ferrari <fluca1978(at)infinito(dot)it>
To: Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>
Cc: pgsql-general <pgsql-general(at)postgresql(dot)org>
Subject: Re: xmin increasing within a transaction block?
Date: 2017-11-06 13:59:52
Message-ID: CAKoxK+5XZfmBFTBxxGQB+bAeio24h5zyV6-in5322Y_zeQkpVg@mail.gmail.com
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On Mon, Nov 6, 2017 at 1:53 PM, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> wrote:
> Something is using subtransactions there. My first guess would be that
> there are triggers with EXCEPTION blocks, but your example doesn't show
> any. Or maybe you have event triggers.

Thanks, but I don't see any event trigger:

> \dy
List of event triggers
Name | Event | Owner | Enabled | Procedure | Tags
------+-------+-------+---------+-----------+------
(0 rows)

Please note that I tested it on a freshly created database obtaining
the same behavior.
I did have in the past event trigger, but I have dropped long time
before this behavior.

Any other idea?

Luca

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