What does “The application requester cannot establish the connection” mean?
The Toolbox JDBC driver uses the system name, user ID, and password provided in the call to DriverManager.getConnection() to establish a connection to the IBM i database. If any of these are not provided, the Toolbox JDBC driver will display a sign-on prompt. If the Toolbox JDBC driver can not sign on to the system for any reason, it will throw an SQLException with the message “The application requester cannot establish the connection”.