This diagram shows the data flow using OracleAS Single Sign-On. An HTTP client is shown communicating through HTTP with OracleAS Single Sign-On and with Oracle HTTP Server, which includes the Apache mods `mod_oc4j` and `mod_osso`. The `mod_osso` module is shown also communicating with OracleAS Single Sign-On. The `mod_oc4j` module is shown communicating with OC4J, through Apache JServ Protocol. OracleAS Single Sign-On is also shown communicating with Oracle Internet Directory.

The box for OC4J comprises a Web application (WebApp A1, including servlets s1 and s2), the security provider framework, and the LDAP-based security provider. Within OC4J, the security provider framework is shown communicating with the LDAP-based security provider. External to OC4J, the LDAP-based provider is shown communicating with Oracle Internet Directory.

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