Re: Question about pg_dump + pg_restore + pg_toast

From: Edwin UY <edwin(dot)uy(at)gmail(dot)com>
To: Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>
Cc: pgsql-admin(at)lists(dot)postgresql(dot)org
Subject: Re: Question about pg_dump + pg_restore + pg_toast
Date: 2025-02-24 21:30:38
Message-ID: CA+wokJ9_6mTq4BOB982-Aua1Nex6tk2GLXL9FOxtx7sXSEBwvA@mail.gmail.com
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Yikes, I thought it is alright so long as I use the latest version of
pg_dump and restore.
Thanks for the warning.

On Tue, Feb 25, 2025 at 12:35 AM Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>
wrote:

> On Mon, 2025-02-24 at 22:19 +1300, Edwin UY wrote:
> > We are upgrading this database from v12 to v16 and we want to do a dump
> of it in case we decided to do a restore from v16 to v12.
> > SO, after the upgrade, in case we want to rollback to v12, we will do a
> pg_dump using v16 and then using v12 pg_restore
>
> Be warned that downgrade is not supported and restoring the dump to v12
> might well fail.
> You might have to manually edit the dump file until you can restore it
> without errors.
>
> Yours,
> Laurenz Albe
>
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