Re: Corruption of files in PostgreSQL

On 5/30/07, Richard Huxton <dev@archonet.com> wrote:
> Paolo Bizzarri wrote:
> > We use postgres as a backend, and we are experimenting some corruption
> > problems on openoffice files.
>
> 1. How are you storing these files?

Files are stored as large objects. They are written with an lo_write
and its contents is passed as a Binary object.

> 2. What is the nature of the corruption?

Apparently, files get truncated.

> > As our application is rather complex (it includes Zope as an
> > application server, OpenOffice as a document server and as a client)
> > we need some info on how to check that we are interacting correctly
> > with Postgres.
>
> Shouldn't matter.

I hope so...

> > We are currently using:
> >
> > - PostgreSQL 7.4.8;
>
> Well, you need to upgrade this - version 7.4.17 is the latest in the 7.4
> series. You are missing 9 separate batches of bug and security fixes.

Ok. We will upgrade and see if this can help solve the problem.

>
> > - pyscopg 1.1.11;
> > - Zope 2.7.x;
> > - Openoffice 2.2.
>
> None of this should matter really, unless there's some subtle bug in
> psycopg causing corruption of data in-transit.
>
> Let's get some details on the two questions above and see if there's a
> pattern to your problems.

Ok. Thank you.

Paolo Bizzarri
Icube S.r.l.