Re: a question about Point-in-Time Recovery (PITR)

On 8/11/22 17:15, jian xu wrote:

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Hello,

         I am creating an automation script which can do PITR restore. For example if users specify the timestamp, I can retore the db to that point. All backup files are on other place, the restore procedure includes

1. Download full backup file generated from pg_basebackup
2. Download all wal archive files generated since the full backup file to the timestamp users specified.

However, the problem is how I can read the begin and end transaction timestamp in each wal archive file?

Without knowing the transaction timestamp, I am not able know which wal archive file I need to download.

I tried pg_waldump, but it doesn’t have transaction timestamp.

Does anyone know the solution? Thanks!

If you run Linux, then pgBackRest is (almost certainly) what you want. 

Download it from https://pgbackrest.org/ or get it from your distro's https://www.postgresql.org/download/ repository.