En el paso "5. In the Applications Navigator, right-click MyPage.jspx, and select Run." pincha mal, no encuentra librerias:
Error: oracle.jsp.el not found
Error: javax.servlet.jsp.el not found
Error: OrionHttpJspPage not found in class _MyPage_jspx
Error: HttpServletRequest not found in class _MyPage_jspx
Error: HttpServletResponse not found in class _MyPage_jspx