--- In firebird-support@yahoogroups.com, PenWin wrote:

>
> >> Hi!
> >>
> >> I am at a loss what to do now. I have a FB 1.5 database which seems to
> >> work fine and even passes gfix -validate -full without any complaints. I
> >> can backup the database using gbak, but if I take that backup and
> >> immediately restore it (gbak again), after all data and most (not sure,
> >> maybe all) indexes get restored, I get error "Invalid request BLR at
> >> offset 752, data operation not supported". After that, the database is
> >> inaccessible - either because it is shutdown or because it has an
> >> unsupported on-disk structure of 32779.
> >
> > It is bad idea to use IB with Firebird database ;)
>
> Eh? I have no idea what you mean by "IB". Interbase, maybe? But where
> would you get the idea that I am using any Interbase tools (I don't)?

Because Interbase reads Firebird's ODS 11 as ODS 32779 (0x8000 + 11) and reports error above.

Regards,
Vlad