I am trying to install Oracle 10g database 10.1.0.3 on Fedora Core 2 and have encountered an X problem for my 'oracle' user.

When I try to log in to GNOME (or Default System Session) the screen stays blue and I can't see or do anything except to ctrl-alt-backspace to logout. If I log in with the same user to a KDE session X windows works.

To install Oracle 10g I have been following these instructions at (www): oracle-base.com/articles...onOnFedora2.php

I noticed the problem when I had reached the part where it says:

Log into the oracle user. If you are using X emulation then set the DISPLAY environmental variable:

DISPLAY=<machine-name>:0.0; export DISPLAY

and then shut down the machine because it was definitely time to go to bed.

Since then, when I try to log in as the 'oracle' user I experience the problem described at the top of the page. I have logged in as root, opened a terminal and su'ed to the oracle user and find that if I try to open the files I edited using emacs, I get the following errors:

Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

emacs: Cannot connect to X server :0.0.
Check the DISPLAY environment variable or use "-d".
Also use the 'xhost' program to verify that it is set to permit connections from your machine.

Can anybody see why this is happening? I need the X windows working as Oracle will only install using a GUI.

The setting of the DISPLAY environment variable would not have persisted after you logged out (unless you added it the Oracle user's shell startup scripts) so it may not be the problem. Here's something to try: log an as another user and then run "xhost +" (no quotes), then su to the oracle user and see if you can run the GUI tools.

BTW the .xsession-errors file may have some indication of what has gone wrong.