At 07:56 PM 11/12/2007, you wrote:

>It is corrupted because Backup fails and can't take metadata with
>IBOConsole. always when we have had corruptions there are this kind of
>errors (with Firebird). It seems to work, but backup fails or some queries
>fails very mysteriously with some situations.

That still tells us nothing. Don't you log backups or check the firebird.log?

>
>99% working but not working. This happens also that can't take metadata out
>of DB.

What errors are reported?

>Db (in our customers) never has corruped in a way that everything
>stops working (or I can't remember that FB-db on our system ever refuced to
>work at all. It always works almost perfectly).

The point is that, if your database is in some condition that is allowing some kind of corruption to occur, it will keep allowing that kind of corruption to occur until the problem is found and fixed.

./heLen