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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
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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                      
"Coge la flor que hoy nace alegre, ufana. ¿Quién sabe si nacera otra mañana?"

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