On Fri, Mar 4, 2016 at 3:22 AM, 'Checkmail' [email protected]
[firebird-support] <[email protected]> wrote:

>
>
>
> If I must go back tot he 2.5 version of firebird, how can I gbak the new
> backup-file to the old version?
>

If you haven't used V3 features in data definitions or the new
authorization options, reverting is pretty easy.  Leave V3 installed for
the backup.   Find a copy of gbak from a 2.5 distribution and use it to
create a backup file.  Install Firebird 2.5.x and use the 2.5.x gbak to
restore the database.  If you've used 3.0 features including the various
authorization options, you'll probably need to extract the database
metadata, edit out references to new features and create a new V2.5.x
database in a separate environment.  You'll need to have both versions of
Firebird available simultaneously.  Use one of the database migration tools
to copy the data from thoe V3 database to the V 2.5  You can find migration
tools here: http://ibphoenix.com/download/tools/migration

Good luck,

Ann

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