Reset/Recreate Jdeveloper Integrated Weblogic server

JDeveloper integrated Weblogic server is an indispensable tool when we develop our ADF applications but quite often it stops working properly without any rational reasons. It's useful in these cases to reset it and let Jdeveloper to rebuild and re-configure it.
To do that you just need to stop Jdeveloper and delete DefaultDomain.

DefaultDomain is located inside jdeveloper configuration folder, you can locate the right folder from Jdeveloper menu looking at:

Help --> About -->Properties
under the property name: ide.system.dir

The first time you Run your ADF application, JDev will re-create Weblogic Domain and will ask you to prompt Weblogic configuration details.