Re: PITR recovery

From: "Ben K(dot)" <bkim(at)coe(dot)tamu(dot)edu>
To: Simon Riggs <simon(at)2ndquadrant(dot)com>
Cc: pgsql-admin(at)postgresql(dot)org
Subject: Re: PITR recovery
Date: 2007-01-09 16:46:42
Message-ID: Pine.GSO.4.64.0701091045330.27635@coe.tamu.edu
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> PITR doesn't go back in time. It only supports roll-forward from a prior
> base backup using the logs, stopping at a predefined time/xid/endoflogs.
> Going backwards using the logs is mostly impossible because the log
> records don't hold enough info to un-erase things.
>
> It is theoretically possible to enhance the server to be able to rewind
> the data in a table by uncommitting transactional changes, but again you
> can't put back data that has been emoved by VACUUM. That feature would
> be similar to flashback, but its more complex then it sounds at first
> hearing. I wouldn't hold your breath while waiting for that.

It was not that it's essential. Thanks for sharing the insight.

Regards,

Ben K.
Developer
http://benix.tamu.edu

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