Two (2) Apex DB in 1 server?

Hi all,
I have 2 databases in one Windows 2003 server. Their db names are TEST and PROD.
I installed Apex 4.1 on both. I installed first at TEST with 8080 as http port and it was working.
Now I installed the 2nd apex 4.1 at PROD database with http port 8081 , but when I launch the url port it is show completion status "done" but the page blank and with no displayed error.
It is just plain blank page.
Is it possible to install 2 Apex in 2 Db and in 1 machine?
Merry Christmas and Happy New Year to All!
Thanks a lot,

ok I got the solution :) thankz

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