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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Rainer Tammer <pgsql@spg.schulergroup.com>
cc: "David G. Johnston" <david.g.johnston@gmail.com>,
        PostgreSQL mailing lists <pgsql-bugs@lists.postgresql.org>
Subject: Re: Postgres 9.2.13 on AIX 7.1
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Comments: In-reply-to Rainer Tammer <pgsql@spg.schulergroup.com>
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Rainer Tammer <pgsql@spg.schulergroup.com> writes:
> 2021-08-25 16:22:33 CEST  DEBUG: postmaster received signal 2
> 2021-08-25 16:22:33 CEST  LOG:  received fast shutdown request

Well, something sent the postmaster SIGINT.  There isn't any
mechanism within Postgres itself that would do that; you need
to look for outside causes.

			regards, tom lane