Re: found xmin from before relfrozenxid on pg_catalog.pg_authid

From: Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>
To: Jeremy Finzel <finzelj(at)gmail(dot)com>
Cc: Postgres General <pgsql-general(at)postgresql(dot)org>, Andres Freund <andres(at)anarazel(dot)de>
Subject: Re: found xmin from before relfrozenxid on pg_catalog.pg_authid
Date: 2018-03-19 17:46:16
Message-ID: 20180319174616.emzynyhvm2j3sby3@alvherre.pgsql
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Jeremy Finzel wrote:
> Getting some concerning errors in one of our databases that is on 9.5.11,
> on autovacuum from template0 database pg_authid and pg_auth_members. I
> only saw some notes on the list about this error related to materialized
> views. FWIW, we did use pg_upgrade to upgrade this database from 9.4 to
> 9.5. Here is an example:
>
> 2018-03-19 12:08:33.946 CDT,,,14892,,5aafee91.3a2c,1,,2018-03-19 12:08:33
> CDT,59/340951,0,ERROR,XX001,"found xmin 2906288382 from before relfrozenxid
> 740087784",,,,,"automatic vacuum of table
> ""template0.pg_catalog.pg_authid""",,,,""

Can you please supply output of pg_controldata?

--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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