ClassCastException using Update Batching

Question

Oracle 9.2.0.4/Linux, JDBC driver 9.2.0.5
I'm trying to use update batching but always get a
ClassCastException when doing:
((oracle.jdbc.driver.OraclePreparedStatement) pstmt).setExecuteBatch(10);
I've followed chapter 12 of the "Oracle9i JDBC Developer's Guide and Reference", but cannot get rid of this damn exception.
Can anyone give me any clue about what's happening?
BTW, JDBC standard batch works perfectly, I just wanted
to test oracle specific batch vs standard batch.
Thanks in advance.

Answer 1

Avi,
I forgot to say is that the code is
inside an EJB, running under JBoss. I've tested
it in JBoss 3.2.5, 3.2.6 and 3.2.7 with no success.
I did not post any code because it's exactly the same
that serves as an example in http://www.oracle.com/technology/products/oracle9i/daily/jun07.html
except for the question that the imports are
oracle.jdbc.driver.*, not oracle.driver.*.
                    java.sql.Connection connection = null;
               java.sql.PreparedStatement pstmt = null;
try {
                              connection = DAOUtils.getDBConnection(JNDIConstants.DATASOURCE);
// disable autocommit
connection.setAutoCommit(false);
String query =
"INSERT INTO TABLE (ID, DATO)" +
" VALUES (TABLE_SEQ.NextVal, ?)";
pstmt = connection.prepareStatement(query);
log.debug(pstmt.getClass().getName()); // org.jboss.resource.adapter.jdbc.WrappedPreparedStatement
// set batch size
((OraclePreparedStatement) pstmt).setExecuteBatch(10); // ClassCastException
                              pstmt.setInt(1, object.getId());
                              pstmt.executeUpdate();
                              ((OraclePreparedStatement) pstmt).sendBatch();
                              connection.commit();
                    } catch (SQLException sqlex) {
                              connection.rollback();
sqlex.printStackTrace();
throw new CustomException(CustomException.DB_ERROR, sqlex);
} finally {
DAOUtils.closePreparedStatement(pstmt);
DAOUtils.closeConnection(connection);
I'm going to post it also in JBoss forums.
I'll keep on trying.