logial replication - drop subscription.

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From: PG Doc comments form <noreply@postgresql.org>
To: pgsql-docs@lists.postgresql.org
Cc: antonio.v.botelho@gmail.com
Subject: logial replication - drop subscription.
Date: Wed, 28 May 2025 20:20:51 +0000
Message-ID: <174846365177.780.12843663746002009140@wrigleys.postgresql.org> (raw)

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/16/sql-droppublication.html
Description:

Hi,
I'm using a lot the logical replication.
I have to do some DDL changes, via an automatic process, on the primary.
That process drop the existing publication, which will stop the
subscription.
I kept the LSN information on the primary, perform the DDL changes on the
replica.
Than I recreate the publication, use the pg_replication_slot_advance using
the savec LSN.
When I re-enable the subscription, I have an error message in the postgres
log saying that the publication doesn't exist. However, it does have the
same name.
Can a note be added on the "DROP PUBLICATION" page to mention that dropping
a publication will compromise the logical replication process event if the
publication is recreated with the same name.
Thanks.

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