Re: Data integrity problem !!!

Vaclav Kulakovsky <vaclav.kulakovsky@definity.cz> writes:
> I've started investigate a cause and I've found that there are really
> duplicated PK in table and some data in the same rows are corrupted. I
> I've checked all log files and database backups and found that this
> problem arose probably after run VACUUM ANALYZE command which is executed
> every night. Everning DB backup was ok and morning backup contained these
> errors. There were no user activity between these 2 backups except VACUUM
> ANALYZE command.

Hmm.  Can you reproduce the problem from a standing start?  (Ie, initdb,
load your evening backup, vacuum analyze, look for duplicates.)  This
is a worrisome report but I really see nothing we can do without more
information.  A test case would be great.

            regards, tom lane