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Date: Sat, 8 Jun 2024 10:46:19 -0700
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Subject: Re: Questions on logical replication
To: Koen De Groote <kdg.dev@gmail.com>
Cc: PostgreSQL General <pgsql-general@lists.postgresql.org>
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From: Adrian Klaver <adrian.klaver@aklaver.com>
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On 6/8/24 10:40, Koen De Groote wrote:
> What I'm trying to do is upgrade a PG11 database to PG16, using logical 
> replication.

Have you looked at pg_upgrade?:

https://www.postgresql.org/docs/current/pgupgrade.html

> 
> The PG11 has an active and a standby, there are a handful of databases. 
> On particular one has a few tables just over 100GB, then a few 100 
> tables near 1GB.

1 GB each?

> 
> What I'd do is start a publication with no tables and add them 1 at a 
> time, refreshing subscription each time.
> 
> This might take a long time, so my main questions relate to potential 
> network issues or various situations where the instance receiving the 
> logical replication, suddenly stop being able to receive.
> 
> Resyncing, and the effects of WAL buildup, are my main concern.
> 
> Accidentally sent a mail to only your email, sorry for that.
> 
> Regards,
> Koen De Groote

-- 
Adrian Klaver
adrian.klaver@aklaver.com