Hmm... I have Oracle Apps experience, but not from the DBA angle. I would suggest that if you do not get a response from anyone else to jet over to OTN (www.otn.oracle.com) and post in the Oracle Apps forum.
I'm when you say without the data are you talking about just the structures (tables, indexes, views, etc). within the database ?
If so you could use export/import into an empty database.
Note that there's a lot of the application represented in the data (e.g. menu, security, profile options, concurrent managers/requests, etc.) without the application configuration data, the clone would be of very limited use.