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Thread: Lost data Folder, but have WAL files--- How to recover the database ?? Windows

Lost data Folder, but have WAL files--- How to recover the database ?? Windows

From
chinnaobi
Date:
Hi All,

Recently i was doing streaming replication, I lost the data folder on both
the servers and left with WAL archives (some how).

Can any one tell me how to recover database with WAL archives.

Thanks in advance.

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Re: Lost data Folder, but have WAL files--- How to recover the database ?? Windows

From
Chris Travers
Date:


On Mon, Mar 5, 2012 at 6:38 PM, chinnaobi <chinnaobi@gmail.com> wrote:
Hi All,

Recently i was doing streaming replication, I lost the data folder on both
the servers and left with WAL archives (some how).

Can any one tell me how to recover database with WAL archives.

I don;t think you can recover from only the WAL archives.  However, if you have a base backup and a complete collection of WAL archives then recovery should be possible.  At that point it's basically standard WAL recovery.

So I guess the first step is to determine if you have this base backup (you would have taken one during replication setup and hopefully were taking them from time to time).

best Wishes,
Chris Travers

Thanks in advance.

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Re: Lost data Folder, but have WAL files--- How to recover the database ?? Windows

From
Simon Riggs
Date:
On Tue, Mar 6, 2012 at 2:38 AM, chinnaobi <chinnaobi@gmail.com> wrote:

> Recently i was doing streaming replication, I lost the data folder on both
> the servers and left with WAL archives (some how).
>
> Can any one tell me how to recover database with WAL archives.
>
> Thanks in advance.

There are no standard tools to help in those situations, but my
company has performed many difficult recoveries where the database has
been partially or severely damaged; references are available. Partial
or full data recovery is often possible but obviously there is a cost
and I respect community members who choose not to take that route.

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 Simon Riggs                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services