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From: Laurenz Albe <[email protected]>
To: Raj <[email protected]>
To: Pgsql-admin <[email protected]>
Subject: Re: RHEL upgrade
Date: Mon, 16 Feb 2026 15:42:11 +0100
Message-ID: <[email protected]> (raw)
In-Reply-To: <CAJk5AtYDxcOn9ehWyNkA=UCQXv6CAxhn6aCJ2nVfbnwjYMDMag@mail.gmail.com>
References: <CAJk5AtYDxcOn9ehWyNkA=UCQXv6CAxhn6aCJ2nVfbnwjYMDMag@mail.gmail.com>

On Mon, 2026-02-16 at 18:11 +0530, Raj wrote:
> We are having Rhel 8.10 and want to upgrade to 9.7.
> 
> We are running postgresql 15.10 where Logical replication is running.
> 
> What are the impact of OS upgrade? What is recommended? Is in place upgrade recommended?  Can replication break?
> What are the things we need to be conscious about ? 

If you disable logical replication before the upgrade, you can resume it
afterwards.

There is the risk that changes in the C library collation can corrupt
some indexes; see https://wiki.postgresql.org/wiki/Locale_data_changes
and https://www.cybertec-postgresql.com/en/operating-system-upgrade-corrupts-indexes/

Yours,
Laurenz Albe

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