pg_clog / pg_xlog corruption?

[Adam Haberlach]

We had one of our databases suddenly try to reference a pg_clog
file that didn't exist whenever we attempted to select from a certain
table. Anyone know of a way to recover from this? Is there a way to
reset the transaction logs and just use whatever data is actually
stored in the system?

--
Adam Haberlach | "We spent the 90's all trying to figure out
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[Martijn van Oosterhout]

You can create the missing clog file as a file 256K big full of zeros. Then
dump, initdb and restore.

And upgrade the db to the latest minor version.

On Tue, Oct 21, 2003 at 04:49:26PM -0700, Adam Haberlach wrote:

We had one of our databases suddenly try to reference a pg_clog
file that didn't exist whenever we attempted to select from a certain
table. Anyone know of a way to recover from this? Is there a way to
reset the transaction logs and just use whatever data is actually
stored in the system?

--
Adam Haberlach | "We spent the 90's all trying to figure out
ad**@mediariffic.com | how to get email and the 00's trying to
http://mediariffic.com | figure out how to not get email."
| -- Joe Gross

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TIP 7: don't forget to increase your free space map settings
--
Martijn van Oosterhout <kl*****@svana.org> http://svana.org/kleptog/ "All that is needed for the forces of evil to triumph is for enough good
men to do nothing." - Edmond Burke
"The penalty good people pay for not being interested in politics is to be
governed by people worse than themselves." - Plato

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[Tom Lane]

Adam Haberlach <ad**@newsnipple.com> writes:

We had one of our databases suddenly try to reference a pg_clog
file that didn't exist whenever we attempted to select from a certain
table. Anyone know of a way to recover from this?

You need to provide more details. For one, exactly which PG version
are you using? And is the complained-of clog file newer or later than
the range of files actually present in $PGDATA/pg_clog?

regards, tom lane

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