run forms from ohs

I installed forms and reports 11.1.2.2 on WLS 10.3.6 on Linux 6.5.

I can run form

http://host_ip:9001/forms/frmservlet?config=myApp

But this does not work, http://host_ip:8888/forms/frmservlet?config=myApp which shows the page not found.

What should I change to make it happen?

Thanks a lot!

Hanping