Could not execute auto check for display colors using command /usr/bin/xdpyinfo. Check if the DISPL

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[grid@node grid]$ ./runInstaller 

Starting Oracle Universal Installer...

Checking Temp space: must be greater than 120 MB.   Actual 6332 MB    Passed

Checking swap space: must be greater than 150 MB.   Actual 2047 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] y

>>> Ignoring required pre-requisite failures. Continuing...

Preparing to launch Oracle Universal Installer from /tmp/OraInstall2019-02-22_08-49-00PM. Please wait ...[grid@node grid]$ Exception in thread "main" java.lang.NoClassDefFoundError

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Class.java:164)

at java.awt.Toolkit$2.run(Toolkit.java:821)

at java.security.AccessController.doPrivileged(Native Method)

at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:804)

at com.jgoodies.looks.LookUtils.isLowResolution(Unknown Source)

at com.jgoodies.looks.LookUtils.(Unknown Source)

at com.jgoodies.looks.plastic.PlasticLookAndFeel.(PlasticLookAndFeel.java:122)

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Class.java:242)

at javax.swing.SwingUtilities.loadSystemClass(SwingUtilities.java:1783)

at javax.swing.UIManager.setLookAndFeel(UIManager.java:480)

at oracle.install.commons.util.Application.startup(Application.java:758)

at oracle.install.commons.flow.FlowApplication.startup(FlowApplication.java:164)

at oracle.install.commons.flow.FlowApplication.startup(FlowApplication.java:181)

at oracle.install.commons.base.driver.common.Installer.startup(Installer.java:265)

at oracle.install.ivw.crs.driver.CRSInstaller.startup(CRSInstaller.java:96)

at oracle.install.ivw.crs.driver.CRSInstaller.main(CRSInstaller.java:103)

解决办法：

（正常情况下可以使用"xhost +"命令以及“export DISPLAY=ip address：0.0”这样的命令轻松解决，以下介绍的方法是这些命令无法解决的情况下可尝试使用。）

把系统注销，然后使用Oracle用户(或者别的安装软件的用户)直接登录系统进入即可！

另外注意：环境变量配置文件中，如果加上官方文档中的一个参数

•  

• export      DISPLAY=local_host:0.0  

会导致不能以Oracle用户的身份登录到图形界面，提示什么10s什么的

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