Oracle is involved in JSR-77, which defines the way a Java 2 Platform, Enterprise Edition (J2EE) application server is managed via JMX. Oracle Application Server will expose a JMX Agent, and Oracle Enterprise Manager will provide a generic MBean browser that will allow customers to manage custom MBeans.
The OC4J 10.0.3 Developer Preview�available on Oracle Technology Network (OTN)�provides an early look at this support. If you install OC4J on your local machine, you can access its JMX console by entering http://localhost:8888/ adminoc4j in your browser
third-party tools to configure and monitor application servers
We are using OC4J 10.0.4 for development. However it is quite different from the OAS we are currently using.