Through Oracle Enterprise Manager (OEM) you can monitor the performance of Oracle9iAS Portal's dependent components such as the Oracle HTTP Server, mod_plsql, Parallel Page Engine, Oracle 9i Database, Single Sign-On Server and Providers. You can also configure your Database Access Descriptors (DADs).
In the Services portlet, click Portal Service Monitoring.
This links to the Oracle Enterprise Manager functionality.
Tip: By default, the Services portlet is located on the Administer tab of the Builder page
For more information about Oracle Enterprise Manager, go to Oracle Technology Network.