Updating data in mulitple databases

Question

Hi,
I have a requirement in my project to update the data in two databases, when user updates data in the screen and saves it. We are using stateless session EJB to call the DAO. The update is using normal JDBC update statement.
If some thing goes wrong in update stmt in any of the database, does EJB has capability to rollback the update in another database as well. As both are in single transaction.
Pls advise on this. Your help is appreciated.
Thanks
Kumar.

Answer 1

... I only added this constructor to be able to run your code:
    public fillDbGui(){
        setTitle("Fill DB GUI");
        setSize(600,500);
        setLocationRelativeTo(null);
        try{
            DriverManager.registerDriver( new com.mysql.jdbc.Driver() );
            DriverManager.registerDriver( new sun.jdbc.odbc.JdbcOdbcDriver() );
            connection = DriverManager.getConnection(DATABASE_URL, DATABASE_USER, USER_PASSWORD);
            conc = connection.createStatement();
            System.out.println("Successfully connected to database '" +DATABASE_NAME+ "'\n");
        }catch(SQLException ex){
            System.out.println("Connection failed\n");
            JOptionPane.showMessageDialog( this, ex.getMessage(),
                    "Fill_DB_GUI:   SQLException", JOptionPane.ERROR_MESSAGE);
        db2vector();
    public static void main(String args[]) {
        new fillDbGui().setVisible(true);
    private final String DATABASE_NAME = "test";
    private final String DATABASE_URL =  "jdbc:mysql://localhost:3306/" + DATABASE_NAME;
//    private final String DATABASE_URL = "jdbc:odbc:" + DATABASE_NAME;
    private final String TABLE_NAME = "testuhrand";
    private final String DATABASE_USER = "root";
    private final String USER_PASSWORD = "sql";
    private Statement conc;
    private Connection connection;