RW-50015: Error: - HTTP Listener is not responding. The service might not have started on the port yet. Please check the service and use the retry button

Oracle EBS R12.1 installation failure in final step:

Checking URL =http://bbarg-app.ple.com:8000/

RW-50015: Error: – HTTP Listener is not responding. The service might not have started on the port yet. Please check the service and use the retry button.
Help Page
———-

checking URL = http://bbarg-app.ple.com:8000/OA_HTML

RW-50015: Error: – Help Page is not responding. The service might not have started on the port yet. Please check the service and use the retry button.
Virtual Directory
——————
RW-50015: Error: – Http Server Virtual Directories is not responding. The service might not have started on the port yet. Please check the service and use the retry button.
JSP
—-

checking URL = http://bbarg-app.ple.com:8000/Jsp

RW-50015: Error: – JSP is not responding. The service might not have started on the port yet. Please check the service and use the retry button.
Login Page
———–


RW-50015: Error: – Login Page is not responding. The service might not have started on the port yet. Please check the service and use the retry button.

RW-10001: Rapidinstall wizard has detected that your configuration has errors. You must resolve these issues before continuing.
Apache logfiles:

Cause:
http web server unable to start due to missing library.  /usr/lib/libdb.so.2

Solution:

1) Shut all application services.

2) create the below link for library file as below

 ln -s   /usr/lib/libgdbm.so.2.0.0  /usr/lib/libdb.so.2

3) Startup all application services.

And press the retry button 
And it will works fine.

Screen shot:

Thank you Any thing keep me posted .

Bahaa Barghouti.