>> And, if I understand correctly, the "main" technical issue is that main
>> database file must be updated in the system tables area (OAT, OIT,
>> allocate pages, etc).
>
> Such people may be happy, because if it's not already possible it's very
> easy to do this with a NBAK locked database now.

Don't you need to update main database file to put a "label" that
database is in "nbak"-like mode? I guess some more functionality is
needed...

Roman