Re: "PANIC: could not open critical system index 2662" - twice

Thomas Munro <thomas.munro@gmail.com> writes:
> Did you previously run this same workload on versions < 15 and never
> see any problem?  15 gained a new feature CREATE DATABASE ...
> STRATEGY=WAL_LOG, which is also the default.  I wonder if there is a
> bug somewhere near that, though I have no specific idea.

Per the release notes I was just writing ...

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [8a8661828] 2023-02-22 10:14:52 +0900
Branch: REL_15_STABLE [fa5dd460c] 2023-02-22 10:14:56 +0900
-->
     <para>
      Fix potential corruption of the template (source) database after
      <command>CREATE DATABASE</command> with the <literal>STRATEGY
      WAL_LOG</literal> option (Nathan Bossart, Ryo Matsumura)
     </para>

     <para>
      Improper buffer handling created a risk that any later modification
      of the template's <structname>pg_class</structname> catalog would be
      lost.
     </para>
    </listitem>

The comment about only pg_class being affected is my interpretation
of what the commit message said, but I might have misunderstood.

            regards, tom lane