How to make Oracle HTTP Server (Apache or OHS) to talk to standalone OC4J.

1. Changes to Apache configuration files:
   Make sure that mod_oc4j.conf is included in httpd.conf.
   Add the following to <Apache Install Dir>/conf/mod_oc4j.conf before <IfModule mod_oc4j.c>

   Oc4jMount /myapp/* ajp13://<oc4j_server>:8888

2. Changes to OC4J configuration:
   Goto OC4J install directory: <install dir>/j2ee/home/config/http-web-site.xml
   
   Modify the tag:

   <web-site ...>

   to

   <web-site host="localhost" port="8888" protocol="ajp13" ...>

3. Deploy your application on OC4J
   Deploy EAR

   java -jar path/to/oc4j/admin.jar \
     ormi://<oc4j_server>/          \
     admin passwd -deploy           \
     -file earfile.ear              \
     -deploymentName name_of_app
   

   Bind webapp

   java -jar path/to/oc4j/admin.jar \
     ormi://<oc4j_server>/          \
     admin passwd -bindWebApp       \
     name_of_app                    \
     <name_of_war_file_in_application.xml> \
     http-web-site /myapp
   

4. Restart OC4J and OHS.