When a browser requests an Oracle9iAS Portal page:
| Oracle9iAS Web Cache fulfills the request if it contains a valid cache of the page. Otherwise, the request is forwarded to the HTTP server, which routes it through mod_plsql to an Oracle9iAS repository, which contains the required metadata. |
| The database server processes the requests according to customization rules and sends it to the multithreaded servlet, which initiates portlet requests to providers. |
| Valid cached portlets are returned from the Oracle9iAS Portal Cache. Providers return other portlets to the engine. |
| The engine aggregates the content into a single page, which is then returned to the browser. |
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