Message-ID: <d376c070789b4620714a822b6e5c6fccb47d6c3b.camel@cybertec.at>
Subject: Re: RHEL upgrade
From: Laurenz Albe <laurenz.albe@cybertec.at>
To: Raj <rajeshkumar.dba09@gmail.com>, Pgsql-admin
	 <pgsql-admin@lists.postgresql.org>
Date: Mon, 16 Feb 2026 15:42:11 +0100
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On Mon, 2026-02-16 at 18:11 +0530, Raj wrote:
> We are having Rhel 8.10 and want to upgrade to 9.7.
>=20
> We are running postgresql 15.10 where Logical replication is running.
>=20
> What are the impact of OS upgrade? What is recommended? Is in place upgra=
de recommended?=C2=A0 Can replication break?
> What are the things we need to be conscious about ?=C2=A0

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-corrupt=
s-indexes/

Yours,
Laurenz Albe