Run java -jar $AGENT_PATH_UNIX to generate the jrebel-bootstrap.jar using the JVM you will run the application with.

Go to folder $ORACLE9_HOME/j2ee/home and start the server with the following command:

java -noverify -Xbootclasspath/p:$BOOTSTRAP_PATH_UNIX:$AGENT_PATH_UNIX -jar oc4j.jar