在redhat as5上安装oracle11g时不能启动GUI报错如下：
[oracle@sense disk1]$ ./runInstaller
Starting Oracle Universal Installer...
Checking Temp space: must be greater than 80 MB. Actual 1184 MB Passed
Checking swap space: must be greater than 150 MB. Actual 3027 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,at which time they will be rechecked.
Continue? (y/n) [n]
解决办法：
注销登录用户，使用oracle安装用户重新登录系统即可解决，比如之前已经创建好的安装用户oracle,使用oracle用户登录系统就可以解决问题
[oracle@sense disk1]$ ./runInstaller
Starting Oracle Universal Installer...
Checking Temp space: must be greater than 80 MB. Actual 1184 MB Passed
Checking swap space: must be greater than 150 MB. Actual 3027 MB Passed
Checking monitor: must be configured to display at least 256 colors. Actual 16777216 Passed
Preparing to launch Oracle Universal Installer from /tmp/OraInstall2009-01-03_05-06-47PM. Please wait .
