Hi,
Have you looked at the recovery parameter as below ?
recovery_target_time
Using this, you could achieve a PITR of the current database. If the recovery requires WAL that does not exist on disk
thenyou may have to restore it from previous night's backup.
Please have a look at the docs for other such recovery parameters:
https://www.postgresql.org/docs/12/runtime-config-wal.html
Regards,
Nawaz
-----Original Message-----
From: Andrus <kobruleht2@hot.ee>
Sent: Monday, 11 May 2020 7:43 AM
To: pgsql-general <pgsql-general@postgresql.org>
Subject: How to restore database to previous state
Hi!
Postgres 12 database is runing on Debian
max_wal_size = 5GB
is specified in postgres.conf file
How to restore database to some previous state, e.q. before important data was accidently deleted.
Binary asynchrunous replication with slot is also used.
I looks like it is possible to create standby server which replicates changes using 24 hour delay and data directory
backupsin every night.
However this requires separate delayed standby server .
Is there simpler solution, e.q reverse playback of wal segments starting from current data directory contents.
Andrus.
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