Hi
I also faced the similar kind of issue. But I used 3.2.2 GA version and I had multiple users in the same db.
I solved this kind of issue by appending the username before the table name . So try appending username ( Staging I guess ) before the table as below
cache.jdbc.table.name=STAGING.JBOSSCACHE
Here is the ref post.
http://community.jboss.org/thread/153459?tstart=0