From: Tom Lane <tgl@sss.pgh.pa.us>
To: Zwettler Markus (OIZ) <Markus.Zwettler@zuerich.ch>
Cc: pgsql-admin@lists.postgresql.org <pgsql-admin@lists.postgresql.org>
Subject: Re: how can one infer the maximum possible restore time from a WAL file(name) in a backup?
Date: Mon, 21 Nov 2022 09:31:57 -0500
Message-ID: <3116564.1669041117@sss.pgh.pa.us> (raw)
In-Reply-To: <173875f2fb734d46877eecf55ae0682e@zuerich.ch>
References: <173875f2fb734d46877eecf55ae0682e@zuerich.ch>
"Zwettler Markus (OIZ)" <Markus.Zwettler@zuerich.ch> writes:
> In Oracle there is a view v$archived_log in which for each logfile the time of the first and last transaction contained in it is indicated. By means of this view one can infer from a log file in the backup the maximum possible recovery time.
> Is there something similar in Postgres? Or in other words, how can one infer the maximum possible restore time from a WAL file(name) in a backup?
There's no view, but you could use pg_waldump to examine the timestamps
of the first and last COMMIT/ROLLBACK records in a WAL file.
regards, tom lane
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To: pgsql-admin@postgresql.org
Cc: tgl@sss.pgh.pa.us, Markus.Zwettler@zuerich.ch, pgsql-admin@lists.postgresql.org
Subject: Re: how can one infer the maximum possible restore time from a WAL file(name) in a backup?
In-Reply-To: <3116564.1669041117@sss.pgh.pa.us>
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