1. Open Integrated Solution Console
2. Navigate to “Resources -> JDBC -> JDBC Providers”
3. Select the right scope for your application
4. Click “New”
5. Select “User-defined” from “Database Type” dropdown
6. Insert “org.postgresql.ds.PGConnectionPoolDataSource” at “Implementation class name” field
7. Provide a name and a descriotion of your choice and click “next”
8. If you haven’t done so before download the JDBC Driver from http://jdbc.postgresql.org/download.html which suits your needs (should be JDBC3 driver for your DB version) and save it at some local library path (e.g. {WAS_HOME}/lib)
9. Insert the path and jar file name in the next dialog, click “next” and “finish” afterwards
10. Navigate to “Resources -> JDBC -> Data sources”
11. Again select the right scope and click “new”
12. Provide a Data source and a jndi name (e.g. jdbc/myPGdb)
13. On step 2 dialog select your already created JDBC provider
14. Just leave step 3 at default values and finish creation, that’s it!

Tested on Websphere Application Server 6.1


public class DB2Mitarbeiter {



public static void main(String[] args) {
String url = "jdbc:db2://127.0.0.1:50000/SAMPLE";
String SQLString=null;
String lastDep = null;
Element emp = null;
Node lastname, firstname = null;
XmlDocument document = new XmlDocument();
Element dep = document.createElement("department");
Node company = document.createElement("company");
ResultSet rs = null;
// Load Type4 DB Driver
try {
Class.forName("com.ibm.db2.jcc.DB2Driver");
} catch (ClassNotFoundException e) {
System.out.println("ClassNotFoundException");
e.printStackTrace();
}
System.out.println("DB Type 4 Driver loaded.");
// DB connect with url,login and pass
try {
FileOutputStream fo = new FileOutputStream("test.xml");
Connection con = DriverManager.getConnection(url,"username","password");
Statement stmt = con.createStatement();
System.out.println("DB connection established.");
SQLString = "SELECT * FROM DEPARTMENT,EMPLOYEE WHERE EMPLOYEE.WORKDEPT = DEPARTMENT.DEPTNO order by DEPARTMENT.DEPTNO";
//SQLString = "SELECT * FROM DEPARTMENT LEFT JOIN EMPLOYEE ON EMPLOYEE.WORKDEPT = DEPARTMENT.DEPTNO";
rs = stmt.executeQuery(SQLString);
while(rs.next()){
//System.out.println("rs: " + rs.getString("DEPTNO") + " - lastdep: " + lastDep);
if (lastDep == null) {
dep.setAttribute("depid",rs.getString("DEPTNO"));
lastDep = rs.getString("DEPTNO");
emp = document.createElement("employee");
emp.setAttribute("empid", rs.getString("EMPNO"));
lastname = emp.appendChild(document.createElement("lastname"));
lastname.appendChild(document.createTextNode(rs.getString("LASTNAME")));
firstname = emp.appendChild(document.createElement("firstname"));
firstname.appendChild(document.createTextNode(rs.getString("FIRSTNME")));
dep.appendChild(emp);
}
else if (lastDep.equals(rs.getString("DEPTNO"))) {
emp = document.createElement("employee");
emp.setAttribute("empid", rs.getString("EMPNO"));
lastname = emp.appendChild(document.createElement("lastname"));
lastname.appendChild(document.createTextNode(rs.getString("LASTNAME")));
firstname = emp.appendChild(document.createElement("firstname"));
firstname.appendChild(document.createTextNode(rs.getString("FIRSTNME")));
dep.appendChild(emp);
}
else {
company.appendChild(dep);
dep = document.createElement("department");
dep.setAttribute("depid",rs.getString("DEPTNO"));
emp = document.createElement("employee");
emp.setAttribute("empid", rs.getString("EMPNO"));
lastname = emp.appendChild(document.createElement("lastname"));
lastname.appendChild(document.createTextNode(rs.getString("LASTNAME")));
firstname = emp.appendChild(document.createElement("firstname"));
firstname.appendChild(document.createTextNode(rs.getString("FIRSTNME")));
dep.appendChild(emp);
}
lastDep = rs.getString("DEPTNO");
}
document.appendChild(company);
document.write(fo);
fo.close();
} catch (Exception e1) {
System.out.println("Fehler");
e1.printStackTrace();
}
}
}