try  {   //DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
           ora.setConnection( new  ConnectionDescriptor(
           "jdbc:oracle:thin:@127.0.0.1:1521:PROBA", "miller", "kolobok", false,
           "oracle.jdbc.driver.OracleDriver"));


           out.println("<p>Processing Oracle data...</p>");
           out.println("<p><h2>Something happens...</h2></p><br>");


           ora.setAutoCommit(true);

           PreparedStatement pstmt = ora.createPreparedStatement("INSERT INTO staff (ID, NAME, HIRE_DAT) VALUES(4, 'Vasya', SYSDATE)");
           //Statement pstmt = ora.createStatement();

           //stmt.setString(1, firstName);
           pstmt.executeQuery();
           
           
           pstmt.close();

           
           
           Statement stmt = ora.createStatement();
           ResultSet rset = stmt.executeQuery("SELECT * FROM STAFF");

            while  (rset.next()) {

           //out.println("<p>Printing Oracle data...</p>");

           out.println(rset.getInt( 1 ) + "   |   " + rset.getString( 2 ) +
                           "   |   " + rset.getDate( 3 ));
           out.println("<br>");
           }

           rset.close();

           //rset.close();
           stmt.close();

           ora.closeConnection();
           out.println("<p><h2>Record was added successfully!</h2></p>");

       }
        catch  (SQLException exc)
       {
           out.println("<p>There was an error in jdbc block...</p>");
           exc.printStackTrace();
       }

           PreparedStatement pstmt = ora.createPreparedStatement("INSERT INTO staff (ID, NAME, HIRE_DAT) VALUES(4, 'Vasya', SYSDATE)");
           //Statement pstmt = ora.createStatement();

           //stmt.setString(1, firstName);
           pstmt.executeQuery();