VNC Server Install

 dnf install tigervnc tigervnc-server-module

optional checking : dnf group install "Server with GUI"

vncpasswd

vi /etc/tigervnc/tigervnc.users

need added 

:1=oracle

vi /etc/tigervnc/tigervnc-config-defaults

need added

session=gnome
geometry=1280x1024

systemctl daemon-reload

systemctl enable --now vncserver@:1.service

optional : cp /lib/systemd/system/vncserver@.service /etc/systemd/system/vncserver@.service 

systemctl start --now vncserver@:1.service

systemctl status --now vncserver@:1.service