Re: Review my steps for rollback to restore point
| От | David G. Johnston |
|---|---|
| Тема | Re: Review my steps for rollback to restore point |
| Дата | |
| Msg-id | CAKFQuwbzEDV2e4yfSpr8SkLyxEmAk=WPn3uo3C2q+1xR5VymVA@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: Review my steps for rollback to restore point (chandan Kumar <chandan.issyoga@gmail.com>) |
| Ответы |
Re: Review my steps for rollback to restore point
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| Список | pgsql-general |
On Tuesday, March 4, 2025, chandan Kumar <chandan.issyoga@gmail.com> wrote:
Thank you for your time and clarification.Does PITR recreate database internally ? can i say it is not the same as pg_restore or it is same as pg_restore plus applying WAL on top of it. I am asking because can we revern DDL operations without PITR in streaming replication
PostgreSQL doesn’t have a concept of “revert”.
PITR just deals with raw bytes on disk for an entire cluster. If a new file appears in the WAL that file is created. That file can be a directory for a database.
You cannot mix physical and logical images of the database so applying WAL on top of pg_restore is technically invalid - but it does effective convey the idea. It’s like saying pg_dump and pg_basebackup are similar. Sure, in some ways that is true - but the logical vs. physical distinction cannot be ignored fully.
David J.
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