For the on-line documentation for release 10.1.2 of the Oracle Application Server, see http://download-uk.oracle.com/docs/cd/B14099_10/web.htm.
It contains besides others links to documentation on the ADF (Application Development Framework), such as Development Guidelines Manual and the Case Manual – a tutorial based on the ToyStore demo application – next to the JavaDoc.
Also in this documentation library: MapViewer, OC4J, XDK (XML Developer’s Kit), MOD_PLSQL (!) and Web Toolkit reference.
At http://download-uk.oracle.com/docs/cd/B14099_10/bi.htm you also find the Business Intelligence documentation on Discoverer, Oracle Reports and Oracle Personalization (a tool that I thought had been discontinued).
The integration section http://download-uk.oracle.com/docs/cd/B14099_10/integrate.htm provides documentation on InterConnect, BPEL, Oracle Workflow and the Oracle Application Server Adapters.