To retrieve the Windows username and MAC address from a client machine accessing your Oracle Application Server, you generally need to capture this information at the server-side request. Here's how you can often accomplish this: 1. Windows Username: - The Windows username should typically be part of the login details sent with the request headers. You can access it from the server-side code that handles user authentication or logging. In a web application, this information is usually provided automatically during the login process. 2. MAC Address: - MAC addresses are usually not transmitted over the internet. They are part of the data-link layer in networking and are not passed between network devices as part of standard...