新手求救：在redhat8中安装oracle9i出现的错误信息！！

sh runInstaller后出现如下信息：
nitializing Java Virtual Machine from /tmp/OraInstall2003-07-13_02-18-06PM/jre/bin/java. Please wait...
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

Exception in thread "main" java.lang.InternalError: Can't connect to X11 window
server using ':0' as the value of the DISPLAY variable.
at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:59)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:120)
at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:5
at java.awt.Window.<init>(Window.java:188)
at java.awt.Frame.<init>(Frame.java:315)
at java.awt.Frame.<init>(Frame.java:262)
at oracle.sysman.oii.oiic.OiicInstaller.main(OiicInstaller.java:593)

请问如何解决？！！