Enable Remote Display

To ensure that your client can display the installation windows, you must enable remote display control for Oracle Real Application Clusters (Oracle RAC) on the container environment.

In this example, we enable remote display from the client to the container host, and log in as the Grid user. Check to see if the environment variable DISPLAY is automatically set up by X11 forwarding:

$ echo $DISPLAY

If it is not set then export the display, where display_computer is your container host, and port is the port where you want to open the display:

$ export DISPLAY=display_computer:port

For details about how to set up remote display in the container host, see:

Install the VNC Remote Access Server on Oracle Linux.

1. From the client machine, start xhost (in our case user-client-1):

   # hostname
   # xhost + 10.0.20.150

   Note:

   10.0.20.150 is the IP address of the first Oracle RAC container (racnode1). This IP address is reachable from our client machine.

2. From the client, use SSH to log in to the Oracle RAC Container (racnode1) as the grid user:

   # ssh -X grid@10.0.20.150

3. When prompted for a password, provide the grid user password, and then export the display inside the racnode1 container to the client, where display_computer is the client system, and port is the port for the display:

   $ export DISPLAY=display_computer:port

   Note:

   You can only use the private IP address of the client as the export target for DISPLAY.