Re: Disappearing Records

Hi Martijn van Oosterhout ,

This is the output that I get by running the query
SELECT datname, age(datfrozenxid) FROM pg_database;

datname | age
----------------+----------
MyProd | 10014107
MyProdtest | 10014107
template1 | 10014107
template0 | 10014107
MyDb | 10014107
(5 rows)
Regards
Venki
-------Original Message-------

From: Martijn van Oosterhout
Date: 11/02/05 17:47:26
To: Venki
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: [GENERAL] Disappearing Records

On Wed, Nov 02, 2005 at 05:00:35PM +0530, Venki wrote:
> >The really nasty thing about it is that because the records are now
> >considered really old, as soon as you do run VACUUM it'll start
> >removing the rows you want to save...

> So does this mean that when we do a vacuum for the first time there will
> still be data loss or Am I wrong in this?

VACUUM cannot recover data from transaction wraparound. But we havn't
even determined if this has happened as you have not yet posted the
output of this query:

SELECT datname, age(datfrozenxid) FROM pg_database;

Have a ncie day,
--
Martijn van Oosterhout <kleptog(at)svana(dot)org> http://svana.org/kleptog/
> Patent. n. Genius is 5% inspiration and 95% perspiration. A patent is a
> tool for doing 5% of the work and then sitting around waiting for someone
> else to do the other 95% so you can sue them.