ERROR: Unable to verify the graphical display setup.

created at 01-07-2022 views: 2


When installing Oracle under Linux

running command


got an error

ERROR: Unable to verify the graphical display setup. This application requires X display. Make sure that xdpyinfo exist under PATH variable.
No X11 DISPLAY variable was set, but this program performed an operation which requires it.


check with command vncserver:

root@localhost ~]# vncserver

        New 'localhost:1 (root)' desktop is localhost:1

        Starting applications specified in /root/.vnc/xstartupLog file is /root/.vnc/localhost:1.log

export DISPLAY=localhost:1
xhost +
access control disabled, clients can connect from any host 

If the above prompt appears,then run:



If you are prompted that there is no vncserver command when running the above command, execute:

yum install tigervnc-server

If the prompt does not have command xhost, execute:

# check which ones provide `*/xhost`
yum whatprovides "*/xhost"
Loaded plugins: product-id, security, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
base/filelists_db                                                               | 3.4 MB     00:00 ... 
xorg-x11-server-utils-7.7-2.el6.x86_64 : X.Org X11 X server utilities    ---------------------就是缺少这个包xorg-x11-server-utils-7.7-2.el6.x86_64
Repo        : base
Matched from:
Filename    : /usr/bin/xhost

Install xorg-x11-server-utils-7.7-2.el6.x86_64

yum -y install xorg-x11-server-utils-7.7-2.el6.x86_64

So both commands can be used.

created at:01-07-2022
edited at: 01-07-2022: