I found this tool http://opendbcopy.sourceforge.net and it works somehow
(using jaybird jars) now have to regenerate DDL from XML

stuck with ant and hibernate ...

Also while searching trough other projects found this plugin for
squirrel-sql

http://sourceforge.net/project/showfiles.php?group_id=28383&package_id=64864&release_id=246974

I will try it and tell you how it works :)