Dear all,
I'm trying to run an Xwindow application from terminal but I'm unable to do it.

What I did:

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oracle@firefly:/usr/local/temp/database$ export DISPLAY=:0.0 

oracle@firefly:/usr/local/temp/database$ xhost +
No protocol specified
xhost:  unable to open display ":0.0"

oracle@firefly:/usr/local/temp/database$ xterm
No protocol specified
xterm Xt error: Can't open display: :0.0


Did I miss anything?

Best regards,
ethereal1m

You could try double-checking the target display number by opening a konsole and typing "echo $DISPLAY".

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[oracle@firefly]$ echo $DISPLAY
:0.0


Is this expected?

also I tried this:

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[oracle@firefly]$ export DISPLAY=localhost:0.0

[oracle@firefly]$ kwrite
kwrite: cannot connect to X server localhost:0.0

[oracle@firefly]$ xterm
xterm Xt error: Can't open display: localhost:0.0

[oracle@firefly]$ echo $DISPLAY
localhost:0.0


any ideas?

I solved the problem by doing xhost + in the original shell. Turns out that the fact I did su [username_whatever] from a terminal and tried to do xhost+ there is causing a problem. I must do xhost + from the original shell instead.

Thank you saying xhost + on vnc account is the key.. thank you it saved me 2 days of pains