Cannot get OUT parameter from stored procedure

Question

Hi,
I am new to stored procedure programming. I wrote a simple java stored procedure as follows:
package fvt;
import java.sql.*;
import java.io.*;
public class FVTProcedures
extends COM.ibm.db2.app.StoredProc {
public void addRecord(int id, String name, int status)
throws SQLException {
java.sql.Statement stmt = null;
java.sql.Connection con = null;
PrintWriter pw = null;
try {
status =3;
pw = new PrintWriter(new FileWriter("c:/temp/fvtproc.txt"));
pw.println("starting...");
// get connection
con =getConnection();
pw.println("Got connection");
stmt = con.createStatement();
stmt.execute("INSERT INTO cmtest (id, name) values (" + id + ",'"+name+"')");
pw.println("Inserted the record");
if (!con.getAutoCommit()) {
con.commit();
pw.println("Committed the connection");
catch (SQLException sqle) {
pw.println(sqle.getMessage());
catch (Exception e) {
pw.println(e.getMessage());
finally {
status =2;
pw.close();
try {
if (stmt != null) {
stmt.close();
catch (SQLException sqle) {}
try {
if (con != null) {
con.close();
catch (SQLException sqle) {}
Then I use the following sql command to create this stored procedure, especially register status as OUT parameter.
CREATE PROCEDURE addRecord (IN id INT, IN name VARCHAR(20), OUT status INTEGER)
FENCED LANGUAGE JAVA EXTERNAL NAME 'fvt.FVTProcedures!addRecord' PARAMETER
STYLE DB2GENERAL
My java program calling this stored proc is as follows:
import java.sql.*;
import javax.sql.*;
public class CallableStmtTest {
     COM.ibm.db2.jdbc.DB2ConnectionPoolDataSource ds = null;
     public static void main(String args[]) {
          CallableStmtTest dt = new CallableStmtTest();
          try {
               dt.test();
          } catch (Exception e) {
               e.printStackTrace(System.out);
     public CallableStmtTest() {
          ds = new COM.ibm.db2.jdbc.DB2ConnectionPoolDataSource();
          ds.setUser("username");
          ds.setPassword("password");
          ds.setDatabaseName("database");
public void test() {
java.sql.Connection conn = null;
CallableStatement cs = null;
String sql = "CALL ADDRECORD(?, ?, ?)" ;
try {
conn = ds.getPooledConnection().getConnection();
conn.setAutoCommit(false);
System.out.println("Got the connection");
cs = conn.prepareCall( sql ) ; /* con is the connection */
System.out.println("Callable statement is prepared");
cs.registerOutParameter(3, java.sql.Types.INTEGER);
cs.setInt(1, 1001 );
cs.setString(2, "1001");
cs.execute() ;
System.out.println("Callable statement is executed, return status: "+cs.getInt(3));
conn.commit();
catch(SQLException sqle) {
sqle.printStackTrace();
finally {
try {
if (cs!=null) {cs.close();}
catch (SQLException sqle1) {
try {
if (conn!=null) {conn.close();}
catch (SQLException sqle1) {
However, the out put is always
Callable statement is executed, return status: 0
while i expect to be
Callable statement is executed, return status: 2
Can anyone tell me what's wrong with that?
thansk,
JST

Answer 1

public void addRecord(int id, String name, int status)
throws SQLException {
status =3;In regular java you are never going to see this value (3) outside of that method. Java doesn't work that way.
So unless java inside the DB works really differently from regular java, you are going to have to pass something else.