Date: Thu, 2 Jun 2016 11:44:49 +0200
From: hubert depesz lubaczewski <depesz@depesz.com>
To: Dhandapani Shanmugam <postgresql95@gmail.com>
Cc: Glyn Astill <glynastill@yahoo.co.uk>, pgsql-admin@postgresql.org
Subject: Re: user logging info
Message-ID: <20160602094448.GB8193@depesz.com>
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On Thu, Jun 02, 2016 at 02:33:34PM +0530, Dhandapani Shanmugam wrote:
> I want to see the list of user who logged into XXX database in last 90
> days. How can we do this please

You can't really. Unless you will modify postgresql.conf (or any other
means of setting config variables), and you'll set log_connections.

You might want to read
https://www.postgresql.org/docs/current/static/runtime-config-logging.html
or https://www.depesz.com/2011/05/06/understanding-postgresql-conf-log/

Best regards,

depesz


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