Xlib connection error

[hassanj]

Dear all!
i am installing oracle 9.0.1 on red hat 9.when ever i try to execute runInstaller i get this error message

Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

java.lang.InternalError: Can't connect to X11 window server using ':0.0' as the
value of the DISPLAY variable.
at sun.awt.motif.MToolkit.<init>(MToolkit.java:43)
at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:39 9)
at java.awt.Font.initializeFont(Font.java:106)
at java.awt.Font.<init>(Font.java:121)
at oracle.sysman.oii.oiif.oiifm.OiifmSplashScreen.<in it>(OiifmSplashScre
en.java:42)
at oracle.sysman.oii.oiif.oiifm.OiifmSplashScreen.<in it>(OiifmSplashScre
en.java:64)
at oracle.sysman.oii.oiic.OiicInstaller.main(OiicInst aller.java:423)

i am installing oracle 9i on local machine and not remotely
what should i do to overcome this problem
thanks

[coolguy-in]

Try to give "xhost" on the shell of that specified user for oracle from which you are installing oracle.