Embarrassed by Google/OTN, after stating I had not had time to verify what version integrates with AD, I spent 10 mins on Google and OTN (Oracle Technology Network) and hey presto :-
"With Oracle9i Application Server 9.0.4, Oracle will offer prepackaged connectivity solutions for NT Domains and ADS. These solutions will allow Oracle customers to perform two-way synchronization of directory data between the Windows and Oracle environments."
Therefore the answer is any version prior to Oracle 9i Application Server 9.0.4 does not have out-of-the-box integration with Active Directory.
