Re: pg 16.4, logical replication, use case = data archiving

My experience with oracle streams (upto version 12.1).
there is a tag at capture, by default tag is null (if not defined).

at the session level we set DBMS_STREAMS.SET_TAG ; so whatever this session
does, will not replicate.
Maybe this kind of "tag" is planned in the upcoming logical replication
feature ?

On Tue, Aug 20, 2024 at 7:26 AM milist ujang <ujang(dot)milist(at)gmail(dot)com> wrote:

> Hi all,
>
> I Play logical replication with row filter feature, my use case is data
> archiving.
> in lab env, it worked, my questions:
> - during alter subscription, what about on-going DML? Can it be lost?
> - any lock during alter subscription should I aware?
>
>
> scenario:
>
> # on source
>
> tutorial=# ALTER PUBLICATION pub1 set TABLE users,likes,articles WHERE
> (title <> 'del');
>
> ALTER PUBLICATION
>
> tutorial=# \dRp+
>
> Publication pub1
>
> Owner | All tables | Inserts | Updates | Deletes | Truncates | Via root
>
>
> ----------+------------+---------+---------+---------+-----------+----------
>
> postgres | f | t | t | t | t | f
>
> Tables:
>
> "public.articles" WHERE (title <> 'del'::text)
>
> "public.likes"
>
> "public.users"
>
> wait a moment....
>
> update users set password_digest='del' where id=10;
>
> wait a moment...
>
> tutorial=# ALTER PUBLICATION pub1 set TABLE users WHERE (password_digest
> <> 'del'),likes,articles WHERE (title <> 'del');
>
> ALTER PUBLICATION
>
> tutorial=# \dRp+
>
> Publication pub1
>
> Owner | All tables | Inserts | Updates | Deletes | Truncates | Via root
>
>
> ----------+------------+---------+---------+---------+-----------+----------
>
> postgres | f | t | t | t | t | f
>
> Tables:
>
> "public.articles" WHERE (title <> 'del'::text)
>
> "public.likes"
>
> "public.users" WHERE (password_digest <> 'del'::text)
>
>
> delete from users where id=10;
>
> # source and target
>
> select * from users;
>
> id=10 gone at source, but exist at target
>
>
>
> --
> regards
>
> ujang jaenudin | Self-Employed, DBA Consultant
> http://id.linkedin.com/pub/ujang-jaenudin/12/64/bab
>

--
regards

ujang jaenudin | Self-Employed, DBA Consultant
http://id.linkedin.com/pub/ujang-jaenudin/12/64/bab