| 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 |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-admin |
> 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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