Accept the License Agreement, then click on the Oracle Containers for J2EE 10g (OC4J) link. The download of the oc4j_extended_101350.zip file will start. Save this zip file on your workstation.
Install
In your ${user.home} directory, create the directories oc4j/10.1.3.5.0 and unzip the oc4j_extended_101350.zip file to the ${user.home}/oc4j/10.3.5.0 directory. Create a system environmental variable ORACLE_HOME and set it's value to ${user.home}/oc4j/10.3.5.0.
For example: if ${user.home}=/users/rstone, then ORACLE_HOME=/user/rstone/oc4j/10.1.3.5.0
You can actually unzip to any directory you desire. The only requirement is that all directory names cannot contain any white space.
Configure
Edit the file ${ORACLE_HOME}/j2ee/home/config/system-application.xml and change: