在Oracle Linux 6.1 上安装Oracle 11.2.0.3， 在运行runInstaller 时报错。 具体如下：
[root@dave mnt]# xhost +
access control disabled, clients canconnect from any host
[root@dave mnt]# su - oracle
[oracle@dave ~]$ cd /u01/software/database/
[oracle@dave database]$ ls
doc readme.html rpm sshsetup welcome.html
install response runInstaller stage
[oracle@dave database]$ export DISPLAY=127.0.0.1:0.0
[oracle@dave database]$ ./runInstaller
Starting Oracle Universal Installer...
Checking Temp space: must be greater than120 MB. Actual 9049 MB Passed
Checking swap space: must be greater than150 MB. Actual 1999 MB Passed
Checking monitor: must be configured todisplay at least 256 colors
>>> Could not execute auto checkfor display colors using command /usr/bin/xdpyinfo. Check if the DISPLAYvariable is set. Failed<<<<
Some requirement checks failed. You mustfulfill these requirements before
continuing with the installation,
Continue? (y/n) [n]
User Selected: No
Exiting Oracle Universal Installer, log forthis session can be found at /tmp/OraInstall2012-04-13_09-12-43PM/installActions2012-04-13_09-12-43PM.log
[oracle@dave database]$ export DISPLAY=192.168.3.201:0.0
[oracle@dave database]$ ./runInstaller
Starting Oracle Universal Installer...
Checking Temp space: must be greater than120 MB. Actual 9049 MB Passed
Checking swap space: must be greater than150 MB. Actual 1999 MB Passed
Checking monitor: must be configured todisplay at least 256 colors
>>> Couldnot execute auto check for display colors using command /usr/bin/xdpyinfo.Check if the DISPLAY variable is set. Failed <<<<
Some requirement checks failed. You mustfulfill these requirements before
continuing with the installation,
Continue? (y/n) [n] n
User Selected: No
Exiting Oracle Universal Installer, log forthis session can be found at /tmp/OraInstall2012-04-13_09-13-45PM/installActions2012-04-13_09-13-45PM.log
[oracle@dave database]$
解决方法：
在OS中注销用户并切换到oracle 用户，就可以执行了，如下：
[oracle@dave database]$ ./runInstaller
Starting Oracle Universal Installer...
Checking Temp space: must be greater than120 MB. Actual 9048 MB Passed
Checking swap space: must be greater than150 MB. Actual 1999 MB Passed
Checking monitor: must be configured todisplay at least 256 colors. Actual16777216 Passed
Preparing to launch Oracle UniversalInstaller from /tmp/OraInstall2012-04-13_09-24-13PM. Please wait ...
应该还有其他的解决方法，这里不在研究原因了。
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