Upgrading 6 versions between 2 systems

From: Rich Shepard <rshepard(at)appl-ecosys(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: Upgrading 6 versions between 2 systems
Date: 2026-09-14 20:26:28
Message-ID: deee7dc-8e5e-cbba-aa3-2141e5d15c6a@appl-ecosys.com
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When I've upgraded postgres in the past on my server/workstation it's
usually been from one major version to the next. What I want to do now is to
move from 12.7 (on an older OS linux version) to 18.6 (on the current
version.)

I know that data formats can change with postgres version increases so my
question is: can I use dumpall in the 12.7 version and move that to the host
running 18.6 since the output is a text .sql file?

TIA,

Rich

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