Putty - X11 forwarding  from Linux to  Windows

1. Install Xming on windows machine and launch it 

2. Open Putty and set X11 forwarding as per given below on image

 

3. Login to Linux using su - root.  (common mistake of not using "-" while su - root)

4. set DISPLAY on linux command prompt. 

export DISPLAY=192.168.0.100:0.0

xhost +

5. login using oracle user "su - oracle "

6. set Display and launch oracle installer