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Re: Replaying archived wal files after a dump restore?

From: Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>
To: Jeff Frost <jeff(at)frostconsultingllc(dot)com>
Cc: Bruno Wolff III <bruno(at)wolff(dot)to>, pgsql-admin(at)postgresql(dot)org
Subject: Re: Replaying archived wal files after a dump restore?
Date: 2005-10-25 20:33:45
Message-ID: 20051025203344.GB7836@surnet.cl (view raw or flat)
Thread:
Lists: pgadmin-hackerspgsql-adminpgsql-hackers
Jeff Frost wrote:

> Unfortunately, diffing the 8.0.4 docs against the 8.1 docs shows almost no 
> useful differences.  I was mostly hoping someone with knowledge of the WAL 
> internal format could tell me how to extract the transactions from some and 
> manually replay them in the db via psql with lots of copy/paste action.

Oh, so the data in the log must be very valuable to you.  I guess you
could extract the data if you processed the WAL logs.  A tool to do this
doesn't exist as far as I know, but you could write your own.  There was
a crude hack by Tom Lane, which you can find on the archives:

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Mohan, Ross" <RMohan(at)arbinet(dot)com>
Cc: pgsql-admin(at)postgresql(dot)org
Date: Wed, 13 Apr 2005 10:26:09 -0400
Subject: Re: [ADMIN] question about wal and point in time recovery

It would be nice to expand on this tool.

-- 
Alvaro Herrera                                http://www.PlanetPostgreSQL.org
"Coge la flor que hoy nace alegre, ufana. ¿Quién sabe si nacera otra mañana?"

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