You see this page of the Add Server Instance wizard when you are registering an Oracle WebLogic Server instance.
Use this page to specify the properties of the instance you are registering.
You can enable or disable support for JPA 2 on the WebLogic Server at any time in the WebLogic Server panel of the Servers dialog box. You can open the Servers dialog box by choosing Tools > Servers from the main menu or by right-clicking a server instance node in the Services window and choosing Properties.