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From: Scott Ribe <[email protected]>
To: Kris Deugau <[email protected]>
Cc: [email protected]
Subject: Re: Guidance Needed for PostgreSQL Upgrade from 12 to 15
Date: Tue, 19 Nov 2024 10:42:42 -0700
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
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> On Nov 19, 2024, at 10:32 AM, Kris Deugau <[email protected]> wrote:
> 
> as otherwise the old PG won't start properly, due to the changes made by pg_upgrade.

Not true, pg_upgrade leaves it in a state where either can be started. By taking the snapshot after, if you roll back to it, you can attempt changes on either the old or new. (Taking care to take additional snapshots as needed, to preserve the ability to roll back to this state.)

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