Could not execute auto check for display colors using command /usr/bin/xdpyinfo

报错信息

oracle@localhost database]$ ./runInstaller
Starting Oracle Universal Installer...

Checking Temp space: must be greater than 120 MB.   Actual 21239 MB    Passed
Checking swap space: must be greater than 150 MB.   Actual 3155 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]

处理方式：

su - root
export DISPLAY=:1.0
xhost +
echo $DISPLAY
su - oracle
export DISPLAY=:1.0
xdpyinfo

或者是

su - root
export DISPLAY=:0.0
su - oracle
export DISPLAY=:0.0
xdpyinfo

也有可能不是这种解决方法