CLassCastException with oracle.jdbc.driver.OracleCallableStatement

Question

Hello,
I get a ClassCastException when I try to execute a Stored Procedure with WL6.1
and the JDriver.
I have a servlet who intanciate a Bean and call to his execute() method in this
way:
Context ctx = null;
Hashtable ht = new Hashtable();
Connection conn = null;
ht.put(Context.INITIAL_CONTEXT_FACTORY,"weblogic.jndi.WLInitialContextFactory");
try {
ctx = new InitialContext(ht);
javax.sql.DataSource ds = (javax.sql.DataSource)ctx.lookup(connPool);
conn = ds.getConnection();
conn.setAutoCommit(true);
SvcEmpEstObt empEstObt = new SvcEmpEstObt();
empEstObt.setMaxRows(100);
empEstObt.setConnection(conn);
//Get parameters from Http Get and set the JB
empEstObt.setEmpRut(request.getParameter("rut"));
empEstObt.setEmpTimeStamp(request.getParameter("timestamp"));
//Execute Service
empEstObt.execute();
/* ********* the execute() method of the jb is listed here */
public int execute() throws ClassNotFoundException, SQLException{
intreturnedRows = 0;
try {if (connection == null){
try {Class.forName(driver);
} catch (ClassNotFoundException e) {
System.err.println("ClassNotFoundException: " + e);
throw e;
connection = DriverManager.getConnection(url, user, password);
row = -1;
srv_message = String.valueOf(maxRows);
String sp = "{call SvcEmpEstObt_Pkg.SvcEmpEstObt(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)}";
oracle.jdbc.driver.OracleCallableStatement procout = (oracle.jdbc.driver.OracleCallableStatement)
connection.prepareCall(sp); // The exception is here
procout.registerOutParameter(1, Types.VARCHAR);
procout.setString(1, srv_message);
procout.setString(2, empRut);
procout.setString(3, empTimeStamp);
procout.registerOutParameter(4, Types.VARCHAR);
procout.registerOutParameter(5, Types.VARCHAR);
procout.registerOutParameter(6, Types.INTEGER);
int elemSqlType = OracleTypes.INTEGER;
int elemMaxLen = 0;
procout.registerIndexTableOutParameter(7, maxRows, elemSqlType, elemMaxLen);
elemSqlType = OracleTypes.VARCHAR;
elemMaxLen = 30;
// register the OUT parameter
procout.registerIndexTableOutParameter(8, maxRows, elemSqlType, elemMaxLen);
elemSqlType = OracleTypes.VARCHAR;
elemMaxLen = 21;
// register the OUT parameter
procout.registerIndexTableOutParameter(9, maxRows, elemSqlType, elemMaxLen);
elemSqlType = OracleTypes.INTEGER;
elemMaxLen = 0;
// register the OUT parameter
procout.registerIndexTableOutParameter(10, maxRows, elemSqlType, elemMaxLen);
// execute the call
procout.execute();
sqlWarning = procout.getWarnings();
srv_message = procout.getString(1);
returnStatus = new Integer(srv_message.substring(0,1)).intValue();
dagMessage = new DagMessage();
dagMessage.oracleMessage(srv_message);
// access the value using JDBC default mapping
empEstTitulo = procout.getString(4);
empEstUniv = procout.getString(5);
empEstNivel = procout.getInt(6);
curCodigo = (BigDecimal[]) procout.getPlsqlIndexTable(7);
curNombre = (String[]) procout.getPlsqlIndexTable(8);
curFecha = (String[]) procout.getPlsqlIndexTable(9);
curDuracion = (BigDecimal[]) procout.getPlsqlIndexTable(10);
// close the statement
procout.close();
if (curCodigo == null) {
return 0;
} else {
return curCodigo.length;
} catch (SQLException e) {
SQLException ex = e;
System.err.println("\n--- SQLException caught ---\n");
while (ex != null) {
System.err.println("Message: " + ex.getMessage ());
System.err.println("SQLState: " + ex.getSQLState ());
System.err.println("ErrorCode: " + ex.getErrorCode ());
ex = ex.getNextException();
System.out.println("");
throw e;
Does Someone has an idea why it happens ?

Answer 1

Hans,
Could you give us the whole text of exception?
Regards,
Slava Imeshev
"Hans" <[email protected]> wrote in message
news:[email protected]...
>
It Works! Thanx a lot ....
I was working with a previous version of my App ... I fixed the problemand now
i can Cast to weblogic.jdbc.vendor.oracle.OracleCallableStatement,
But ...
I get the following Exception:
SQL Exception:
registerIndexTableOutParameter is not supported by the
underlying JDBC driver weblogic.jdbc.pool.Connection
What I need to do ?
/* this is what i`m trying to make */
weblogic.jdbc.vendor.oracle.OracleCallableStatement procout =(weblogic.jdbc.vendor.oracle.OracleCallableStatement)
connection.prepareCall(sp);
procout.registerOutParameter(1, Types.VARCHAR);
procout.setString(1, srv_message);
procout.setString(2, empRut);
procout.setString(3, empTimeStamp);
procout.registerOutParameter(4, Types.VARCHAR);
procout.registerOutParameter(5, Types.VARCHAR);
procout.registerOutParameter(6, Types.INTEGER);
int elemSqlType = OracleTypes.INTEGER;
int elemMaxLen = 0;
procout.registerIndexTableOutParameter(7, maxRows, elemSqlType,elemMaxLen);
>
elemSqlType = OracleTypes.VARCHAR;
elemMaxLen = 30;
// register the OUT parameter
procout.registerIndexTableOutParameter(8, maxRows, elemSqlType,elemMaxLen);
>
elemSqlType = OracleTypes.VARCHAR;
elemMaxLen = 21;
// register the OUT parameter
procout.registerIndexTableOutParameter(9, maxRows, elemSqlType,elemMaxLen);
>
elemSqlType = OracleTypes.INTEGER;
elemMaxLen = 0;
// register the OUT parameter
procout.registerIndexTableOutParameter(10, maxRows, elemSqlType,elemMaxLen);
>
>
"Hans" <[email protected]> wrote:
Thanx Slava,
But I have the same problem again...
I replace oracle.jdbc.driver.OracleCallableStatement with
weblogic.jdbc.vendor.oracle.OracleCallableStatement
and I get the same ClassClastException in
weblogic.jdbc.vendor.oracle.OracleCallableStatement procout =
(weblogic.jdbc.vendor.oracle.OracleCallableStatement)
connection.prepareCall(sp);
Any ideas ??
"Slava Imeshev" <[email protected]> wrote:
Hi Hans,
You can not cast returned object to
oracle.jdbc.driver.OracleCallableStatement
when accessing oracle db via connection pool.
It can be casted to weblogic.jdbc.vendor.oracle.OracleCallableStatement.
Here is a list of methods supported by this interface:
void clearParameters() throws java.sql.SQLException;
void registerIndexTableOutParameter(int i, int j, int k, int l) throws
java.sql.SQLException;
void registerOutParameter(int i, int j, int k, int l) throws
java.sql.SQLException;
java.sql.ResultSet getCursor(int i) throws java.sql.SQLException;
java.io.InputStream getAsciiStream(int i) throws
java.sql.SQLException;
java.io.InputStream getBinaryStream(int i) throwsjava.sql.SQLException;
java.io.InputStream getUnicodeStream(int i) throwsjava.sql.SQLException;
>>>
Regards,
Slava Imeshev
"Hans" <[email protected]> wrote in message
news:[email protected]...
Hello,
I get a ClassCastException when I try to execute a Stored Procedurewith
WL6.1
and the JDriver.
I have a servlet who intanciate a Bean and call to his execute()
method
in
this
way:
Context ctx = null;
Hashtable ht = new Hashtable();
Connection conn = null;
ht.put(Context.INITIAL_CONTEXT_FACTORY,"weblogic.jndi.WLInitialContextFact
or
y");
try {
ctx = new InitialContext(ht);
javax.sql.DataSource ds = (javax.sql.DataSource)ctx.lookup(connPool);
conn = ds.getConnection();
conn.setAutoCommit(true);
SvcEmpEstObt empEstObt = new SvcEmpEstObt();
empEstObt.setMaxRows(100);
empEstObt.setConnection(conn);
file://Get parameters from Http Get and set the JB
empEstObt.setEmpRut(request.getParameter("rut"));
empEstObt.setEmpTimeStamp(request.getParameter("timestamp"));
file://Execute Service
empEstObt.execute();
/* ********* the execute() method of the jb is listed here */
public int execute() throws ClassNotFoundException, SQLException{
intreturnedRows = 0;
try {if (connection == null){
try {Class.forName(driver);
} catch (ClassNotFoundException e) {
System.err.println("ClassNotFoundException: " + e);
throw e;
connection = DriverManager.getConnection(url, user, password);
row = -1;
srv_message = String.valueOf(maxRows);
String sp = "{call SvcEmpEstObt_Pkg.SvcEmpEstObt(?, ?, ?, ?, ?, ?,?, ?,
oracle.jdbc.driver.OracleCallableStatement procout =(oracle.jdbc.driver.OracleCallableStatement)
connection.prepareCall(sp); // The exception is here
procout.registerOutParameter(1, Types.VARCHAR);
procout.setString(1, srv_message);
procout.setString(2, empRut);
procout.setString(3, empTimeStamp);
procout.registerOutParameter(4, Types.VARCHAR);
procout.registerOutParameter(5, Types.VARCHAR);
procout.registerOutParameter(6, Types.INTEGER);
int elemSqlType = OracleTypes.INTEGER;
int elemMaxLen = 0;
procout.registerIndexTableOutParameter(7, maxRows, elemSqlType,elemMaxLen);
elemSqlType = OracleTypes.VARCHAR;
elemMaxLen = 30;
// register the OUT parameter
procout.registerIndexTableOutParameter(8, maxRows, elemSqlType,elemMaxLen);
elemSqlType = OracleTypes.VARCHAR;
elemMaxLen = 21;
// register the OUT parameter
procout.registerIndexTableOutParameter(9, maxRows, elemSqlType,elemMaxLen);
elemSqlType = OracleTypes.INTEGER;
elemMaxLen = 0;
// register the OUT parameter
procout.registerIndexTableOutParameter(10, maxRows, elemSqlType,elemMaxLen);
// execute the call
procout.execute();
sqlWarning = procout.getWarnings();
srv_message = procout.getString(1);
returnStatus = new Integer(srv_message.substring(0,1)).intValue();
dagMessage = new DagMessage();
dagMessage.oracleMessage(srv_message);
// access the value using JDBC default mapping
empEstTitulo = procout.getString(4);
empEstUniv = procout.getString(5);
empEstNivel = procout.getInt(6);
curCodigo = (BigDecimal[]) procout.getPlsqlIndexTable(7);
curNombre = (String[]) procout.getPlsqlIndexTable(8);
curFecha = (String[]) procout.getPlsqlIndexTable(9);
curDuracion = (BigDecimal[]) procout.getPlsqlIndexTable(10);
// close the statement
procout.close();
if (curCodigo == null) {
return 0;
} else {
return curCodigo.length;
} catch (SQLException e) {
SQLException ex = e;
System.err.println("\n--- SQLException caught ---\n");
while (ex != null) {
System.err.println("Message: " + ex.getMessage ());
System.err.println("SQLState: " + ex.getSQLState ());
System.err.println("ErrorCode: " + ex.getErrorCode ());
ex = ex.getNextException();
System.out.println("");
throw e;
Does Someone has an idea why it happens ?