Issues with desktop resolution on Oracle Linux 6.7

Hi All,

I have recently installed Oracle Linux 6.7 server on Virtual box 5.1. The installation went smooth and i was able to create a VM on Windows 7 as host.The issue is that the default desktop that i see is not at the default resolution and i am only able to see half of the screen.

Initially i though it was related to Virtual box, but guest editions is properly installed and functions associated with guest additions such as shared drive and clipboard sharing are working as expected.

Other thing that i noticed was the missing Xorg.conf file. I tried to create a default one by giving the following command

Xorg :0 -configure

but it gives the following error

Fatal server error:
Server is already active for display 0

Not sure where i might be going wrong. Request your expert help here.

THanks,
Dev