While running the Oracle installer on unix box, you might see below error message. This is normally come when UI display on machine is disabled.
Error: – Checking monitor: must be configured to display at least 256 colors >>> Could not execute auto check for display colors using command /usr/bin/X11/xdpyinfo. Check if the DISPLAY variable is set.
Failed <<<< Some requirement checks failed. You must fulfill these requirements before.
Follow below setups to fix this issue
Download Xming setup to your local directory and Launch Xming using XLaunch.exe
You will see Xming server running on your task bar.
Setup putty to configure X11–>Enable X11 forwarding; also provide value at X display location as
Log-In server in same session and now you will be able to see installer UI screen.