The real question is wether DBD::Oracle supports it.

From DBD::Oracle:

<QUOTE>"DBD::Oracle is a Perl module which works with the DBI module to provide access to Oracle databases (both version 7 and 8)"</QUOTE>

So, you might have issues if version 9 is not backwards compatable with version 8. That is, until somebody gets around to updating DBD::Oracle to be forward compatable.