If you want to run any of Oracle's GUI tools from a remote machine -- for example, to install Oracle on a remote
machine -- you may need to set up X forwarding over SSH.
Step 1: Add the server's IP and name to your hosts file
- On Windows, the hosts file is found in C:\WINDOWS\system32\drivers\etc and is read-only.
- On a UNIX machine the hosts file is in /etc/hosts. You can add this info to ~/.rhosts instead.
Edit the file and add something like:
22.214.171.124 my.oracle.server.ca # My Oracle server
Step 2: Set your display variable and start X on your machine
- Windows: You'll need an X server. The easiest (and cheapest) solution is to install
cygwin, which is open-source, free, and excellent. Make sure to install the X server
when you install Cygwin. Once you've got Cygwin all set up, start it up. You'll be presented with a prompt.
- Unix: Make sure X is set up on your machine and get yourself a shell prompt.
Set your display environment variable to [your IP address]:0 and start X. This example assumes you're using Bash (the
default for Cygwin), and that your IP address is 126.96.36.199 :
$ export DISPLAY=188.8.131.52:0
$ startx &
Step 3: Ssh into the remote machine
You may want to use a different shell prompt for this command, because the window
you used above will be cluttered with X
messages. On most systems, "startx" will have popped up an xterm; use that.
$ ssh -l oracle -Y my.oracle.server.ca -b 184.108.40.206
Warning: No xauth data; using fake authentication data for X11 forwarding.
You're now logged in to the remote machine. Any X programs you tell it to run will
pop up on your local display.
Step 4: Run X programs
Test your X setup by running a simple program like xeyes or xclock.
[firstname.lastname@example.org]$ xeyes &
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