You can unload an application that is in Online Applications to make it unavailable. You can also load an unloaded application to make it available again. To load or unload an application, select it on the FCAS Application Monitor, then click the Load or Unload button. Unloading an application with no active sessions will make the application unavailable immediately. Unloading an application with active sessions will make the application unavailable after the last user has quit the application. Loading an application will make it immediately available. This means that you can build an application on a separate server, then put it on your production server without having to shut down the production server. You can also revise an application, unload the old copy, and load the new copy, without any down time.