Hi all, As a follow up, I wanted to let you know that Duncan's suggestion worked and I am now able to bring up both xclock and the Oracle Installer. I was unable to ssh directly into the oracle account for security reasons, which is why I was performing the switch user. Therefore, it seems like my problem was a security issue related to X authentication Thanks for all your help _____ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Lawie, Duncan Sent: Friday, September 08, 2006 7:12 AM To: 'mschmitt@xxxxxxxxxxxx'; oracle-l@xxxxxxxxxxxxx Subject: RE: Xterm issues Mike, there are a couple of extra steps ... ssh -X sunhost # get a list of X auth info $> xauth list sunhost/unix:11 MIT-MAGIC-COOKIE-1 70f1a1a3f444272ae0fa5b388b0b3f49 sunhost/unix:10 MIT-MAGIC-COOKIE-1 1827878ae62fd34205dfef870c85bf6b # check your display and extract the matching auth $> echo $DISPLAY localhost:10.0 $> xauth nextract - sunhost/unix:10 0100 000c 6c6e6c3930642d3030303261 0002 3130 0012 4d495 ... # switch user to Oracle and set your display ora> export DISPLAY=localhost:10.0 # add the auth info ora> xauth nmerge - <CR> # paste the long key from the nextract above and hit return (twice) ora> xclock # Success ! (hopefully). Cheers, Duncan.