Bonjour Olivier,

> Just for the fun of testing it after having found no definitive word on that (or
> having missed it, very possibly), I have launched FB 2.5 RC3 Win 64 bits at some
> databases built by FB 2.1 Win 32 bits. Looks like that works, and very well.

This is expected. Work was done, when the Windows x64 port was developed, to allow for the database ODS to be natively accessible from both x86 and x64 builds for a given platform.

> Migrating from 2.1 32 bits (Win) to 2.5 64 bits (Win), should a gbak/restore
> scheme be put in place anyway for real production migration, or could it be
> made *that* simple?

Yes, it _could_ be that simple.

> Those databases are gbak'ed and restored once in a while anyway. Is there a
> specific benefit of backing up with the 2.1 32 bit edition, to then restore with
> the 64 bit 2.5 version?

Personally, I would use the version upgrade as an opportunity to perform and database maintenance backup/restore.


Sean