报错信息：

[grid@rhel65 grid]$ ./runInstaller

Starting Oracle Universal Installer...

Checking Temp space: must be greater than 120 MB. Actual 34027 MB Passed

Checking swap space: must be greater than 150 MB. Actual 3999 MB Passed

Checking monitor: must be configured to display at least 256 colors

>>> Could not execute auto check for display colors using command /usr/bin/xdpyinfo. Check if the DISPLAY variable is set. Failed <<<<

Some requirement checks Failed. You must fulfill these requirements before

continuing with the installation,

Continue? (y/n) [n]

解决方法：

yum install -y xorg-x11-apps

yum -y install xorg-x11-utils