I found this simple code snippet for how to retrieve multiple RefCursor values in Oracle through Enterprise Library 4.1
object[] parameters = new object[3];
DataSet ds = new DataSet();
Database db = DatabaseFactory.CreateDatabase();
DBCommandWrapper cw = db.GetStoredProcCommandWrapper("mypackage.mypackagename", parameters);
db.LoadDataSet(cw, ds, new string[] {"RefCur1", "RefCur2", "RefCur3"});