Oracle WebLogic Server 11g Administration Handbook

Avoid Running the Server Under a Privileged Account

You must not run WebLogic Server as a privileged user. Since UNIX systems don't allow nonprivileged users (users other than root) to bind to ports with a value lower than 1025, you must use a strategy to bypass the restriction. However, it's not a good idea to let long-running processes such as those belonging to WebLogic Server run with unnecessary privileges. If you need access to a port lower than 1025, such as port 80, for example, start the server instance as a privileged user, but once the instance binds to the privileged port, change the user ID to a nonprivileged user account. You can start the Node Manager only as a privileged user (root in UNIX systems); therefore, you must configure ...