In both of the versions you have Oracle Data pump: http://docs.oracle.com/cd/B28359_01/server.111/b28319/dp_export.htm
If you don't have any types you created - it would work just fine,
if you do have- you'll have to manually check everything works correctly.
just export using data-pump the user (the SCHEMAS parameters) - and from my experience - it will export the user fine. note this : "Cross-schema references are not exported unless the referenced schema is also specified in the list of schemas to be exported" - this might be what you referred to.
I recommend creating an export of Metadata only, and copying the data on a DB_LINK.
good luck