Linux Oracle Database Installation : Display Problem

​Display, it's very common problem when i installed Oracle Database on Linux, not only database, but also oracle weblogic too.

Here, some steps to solve the display problem
1. open terminal as root
2. DISPLAY=:0.0
3. export DISPLAY
4. xhost +
5. su - oracle
6. DISPLAY=:0.0
7. export DISPLAY
8. execute ./runInstalle​r

if ./runInstaller still can't be executed, reboot server, and xhost + again