Upgrade PG from 12 to latest

From: Doron Tsur <qballer(at)gmail(dot)com>
To: pgsql-general(at)lists(dot)postgresql(dot)org
Subject: Upgrade PG from 12 to latest
Date: 2024-06-23 07:08:57
Message-ID: CAPZZA0oDsc5Riu_xvrsJ_vjPAedFBGcHdhnz7uEfFp25FY9bkA@mail.gmail.com
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Hello Folks,

We are running PG 12 on AWS RDS. I want to run an upgrade process for the
DB. The org I work for attempted to upgrade before but failed (12->15). The
upgrade resulted in unexplained slowness, and performance issues were only
resolved via a downgrade. Do you have any upgrade docs or recommendations
you can share about the upgrade process before I try to go on the journey?

Thank you,
-Doron

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