Subject says it all...  What am I doing wrong here?  Apparently the 
WrappedCallableStatement implementation that JBoss uses is doing something to prevent 
the casting, but what do I do to get around that?

      connection = getConnection("OracleDS");
  | 
  |       logger.finer("Calling request_list.get_default_request_list");
  | 
  |       cst = connection.prepareCall("{call request_list.get_default_request_list 
(?,?,?)}");
  |       cst.setInt(1, 1);
  |       cst.setInt(2, 1);
  |       cst.registerOutParameter(3, OracleTypes.CURSOR);
  |       cst.execute();
  | 
  |       rs = ((OracleCallableStatement)cst).getCursor(3);

And getConnection is implemented as:
  private java.sql.Connection getConnection (String resourceName)
  |       throws NamingException, SQLException {
  | 
  |     logger.finer("Obtaining JNDI context.");
  |     //Obtain the JDNI context
  |     Context context = new InitialContext();
  | 
  |     logger.finer("JNDI Lookup to get the resource manager connection factory 
reference");
  |     //JNDI Lookup to get the resource manager connection factory reference
  |     javax.sql.DataSource ds = (javax.sql.DataSource) context.lookup("java:/jdbc/" 
+ resourceName);
  | 
  |     logger.finer("Invoke factory to obtain a connection and return connection to 
calling environment");
  |     //Invoke factory to obtain a connection and return connection to calling
  |     //environment
  |     return ds.getConnection();
  |   }
  | 

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