Oracle 10g unable to insert yet prompt no error

Question

Hi all,
I bumped into this strange case. I have my web app connect to oracle 10g. I got all driver and JDBC setup and coded correctly. Somehow, it won't insert into table when i execute insert statement. No exceptions thrown and yet no error. I'm still finding a way to overcome this strange problem. In the mean time, appreciate if anyone out there able to help me to figure out.
I suspect the driver class is causing problem. But to me, it's just a standard bunch of code:
Connection con = null;
try {
// Load the JDBC driver
String driverName = "oracle.jdbc.driver.OracleDriver";
Class.forName(driverName);
// Create a connection to the database
String serverName = "127.0.0.1";
String portNumber = "1521";
String sid = "orcl";
String url = "jdbc:oracle:thin:@" + serverName + ":" + portNumber + ":" + sid;
String username = "ivan";
String password = "admin123";
con = DriverManager.getConnection(url, username, password);
} catch (ClassNotFoundException e) {
// Could not find the database driver
} catch (SQLException e) {
// Could not connect to the database
return con;
Thanks!
Ivan Brogalis

Answer 1

1 - The code posted, creates an SQL connection and returns it. There is no insert query ! Plz post the whole code.
2 - Append this the catch block :
catch (Exception e){
    e.printStackTrace();////////////////// USE THIS FOR THE OTHER CATCH BLOCKS TO HELPS U IDENTIFY THE PROBLEM
}3 - Check whether the connection created is good : make s simple select like the following : String select = "Select sysdate from dual";4 - Check whether the user(name=ivan, password=admin123) has the SELECT/UPDATE rights.