U-NET with Oracle

[yilkork]

Hi experts,
Can you help me about running U-Net with an Oracle database. I can run on my pc but i want to create a db to my server and i want to use that db from my computer. I installed oracle to my server. In my server i can run Unet with oracle server but when i want to open Unet from my pc with Oracle Server that installed on server, it says Listener Error.

Please help me.