[root@oracle ~]# vncserver
New 'oracle:1 (root)' desktop is oracle:1
...
[root@oracle ~]# export DISPLAY=oracle:1
[root@oracle ~]# xhost +
access control disabled, clients can connect from any host
[root@oracle ~]# vncserver
New 'oracle:1 (root)' desktop is oracle:1
...
[root@oracle ~]# export DISPLAY=oracle:1
[root@oracle ~]# xhost +
access control disabled, clients can connect from any host