Re: physical replication compatibilty

From: "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>
To: Jatinder Singh Sandhu <jitu(dot)sandhu(at)gmail(dot)com>
Cc: pgsql-general(at)lists(dot)postgresql(dot)org
Subject: Re: physical replication compatibilty
Date: 2026-04-15 22:16:20
Message-ID: CAKFQuwbSNVmO=HK=QgmpP2Ngc3KhUPWTz2C_w262XiVLEiDFjg@mail.gmail.com
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On Wed, Apr 15, 2026 at 3:06 PM Jatinder Singh Sandhu <jitu(dot)sandhu(at)gmail(dot)com>
wrote:

> Is physical streaming replication backward compatible between these two
> major versions?
>

pg_upgrade can perform this kind of physical transfer upgrade.

Physical replication is only reliable when the source and target are
basically identical in platform and software. It cannot be expected to
work between major versions.

David J.

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