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Date: Mon, 14 Sep 2026 13:26:28 -0700 (PDT)
From: Rich Shepard <rshepard@appl-ecosys.com>
Reply-To: Rich Shepard <rshepard@appl-ecosys.com>
To: pgsql-general@postgresql.org
Subject: Upgrading 6 versions between 2 systems
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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