Can't connect to X11 window server using 'localhost:0.0' 的解决

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本文记录了在Linux环境下安装Oracle过程中遇到的“Can't connect to X11 window server”错误及其解决方案。通过设置DISPLAY环境变量和使用xhost命令解决了图形界面无法启动的问题。

安装Oracle时出现如下错误

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

Checking installer requirements...

Checking operating system version: must be redhat-3, SuSE-9, redhat-4, UnitedLinux-1.0, asianux-1 or asianux-2
Passed

All installer requirements met.

Preparing to launch Oracle Universal Installer from /tmp/OraInstall2009-06-07_12-13-22PM. Please wait ...[oracle@localhost database]$ Exception in thread "main" java.lang.InternalError: Can't connect to X11 window server using 'localhost:0.0' as the value of the DISPLAY variable.
        at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
        at sun.awt.X11GraphicsEnvironment.<clinit>(Unknown Source)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Unknown Source)
        at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(Unknown Source)
        at java.awt.Window.init(Unknown Source)
        at java.awt.Window.<init>(Unknown Source)
        at java.awt.Frame.<init>(Unknown Source)
        at oracle.ewt.popup.PopupFrame.<init>(Unknown Source)
        at oracle.ewt.lwAWT.BufferedFrame.<init>(Unknown Source)
        at oracle.sysman.oio.oioc.OiocOneClickInstaller.<init>(OiocOneClickInstaller.java:378)
        at oracle.sysman.oio.oioc.OiocOneClickInstaller.main(OiocOneClickInstaller.java:2091)

执行如下命令得以解决，而不是很多人说的export DISPLAY=localhost:0.0, 不知道为什么这样，有谁知道告诉我，furtherchan@163.com ,非常感谢

[oracle@localhost database]$ export DISPLAY=:0
[oracle@localhost database]$ su
Password:
[root@localhost database]# xhost + localhost
localhost being added to access control list

PS: xhost + hostname /IP : 指定的host就可以让Client端能使用当前服务器的X Server，即用服务器的显示设备做为终端来输出。