Can a BC4J-JSP App live within a Portlet

I've read the posts AND the docs AND still do not have a clear idea if a BC4J-JSP application can live within Portal. I DO NOT WANT to click on a link from Portal and open a * NEW * window, I want the BC4J App to be contained within the Portal.
Can anyone from Oracle Portal answer this **** AND *** can you show a working example of a BC4J application. HelloWorld.jsp is not a multi-page application.
Thanks,
Bill G...

Hi Bill,
1. Yes, you can access the userid from your partner app.
2. Do you want to make your code appear on a portal page, and re-render it within the portlet container, rather than have your application replace the portal page? If this is what your question is, then:
a) You may run your app in an iframe as Subramanyam has recommended. The first issue with this: ns 4.x doesn't support it. The second one, the request is sent to your app from the browser iframe, it doesn't go through the parallel page engine, thus your application is not being cached along with the page. Also, end users can't access a particular page of your application, they can only bookmark the portal page, which will always display the initial page of your application.
b) You can run your app as it is, taking advantage of the renderers of PDK, capable to render JSPs. In this case, you need to modify your code, at least the links and forms, so that the portal page URL is used as the target url (extra parameters appended to it, or implemented in hidden fields).
You find a sample portlet (Flights of Fancy External Application) implemented as a partner application in the PDK.
This is a PDK article worth to check out: Using PDK-Java to Integrate a Partner Application with Oracle9iAS Portal (V2)
And finally, you find the Administration Guide, the Appliation Developre's Guide, and the API Reference in the Oracle9iAS Documentation Library under Oracle9iAS Single Sign-On on the Management and Security tab.
Peter

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=============================
type Exception report
message Internal Server Error
description The server encountered an internal error (Internal Server Error) that prevented it from fulfilling this request.
exception
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====================
thanks
pullareddy

I had very similar problems with adding the correct JDeveloper .jar files to Tomcat's lib folder, but did eventually resolve my issues.
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