Portlets appear as blank pages

Has anyone solved this yet:
I have an open tar(1329917.996) since 10-APR-01 05:45:18 regarding a problem that has effected several customers
When I opened this tar
these threads on technet and metalink were concerned with this issue with no resolution:
metalink Doc ID: 208842.999, Doc ID: 211223.999 http://technet.oracle.com:89/ubb/Forum66/HTML/000410.html, http://technet.oracle.com:89/ubb/Forum66/HTML/000197.html) but have recieved
The presenting problem was after successful install of the jdpk and testing of the sample servlet,
portlets from the jdpk could not be seen from portal (literally produced a blank html page)
this was accompanied by this error in the Jserv log:
page/Unexpected exception in servlet
java.lang.Exception:Invalid session-data found process 7
atoracle.webdb.page.PageBuilder.getSessionData(PageBuilder.java, Compiled
Code)
at java.lang.Exception.<init>(Exception.java, Compiled Code)
atoracle.webdb.page.PageBuilder.getSessionData(PageBuilder.java, Compiled
Code)
at oracle.webdb.page.PageBuilder.generatePage(PageBuilder.java, Compiled Code)
at oracle.webdb.page.PageBuilder.process(PageBuilder.java, CompiledCode)
at oracle.webdb.page.ParallelServlet.doGet(ParallelServlet.java, Compiled Code)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:499)
atjavax.servlet.http.HttpServlet.service(HttpServlet.java:588)
atorg.apache.jserv.JServConnection.processRequest(JServConnection.java,
Compiled Code)
at org.apache.jserv.JServConnection.run(JServConnection.java, CompiledCode)
at java.lang.Thread.run(Thread.java:479)
After reformat of hard drives of the 9ias box and new install of the most current 1.0.2.2 9ias and the most current jpdk
(3.09) I have the same symptoms although this time I can run the sample test and some of the jpdk jsp by involking them
at http://<myserver>/jpdk/parameters/parampass.jsp
but not others http://<myserver>/jpdk/lottery/lotto.jsp produces errors
My current environment:
Windows Nt sp6
91as 1.0.2.2 (Entreprise Vesion) fresh install of operating system and software
Windows Nt sp6
8.1.7.1 professional version portal 3.07
the test servlet sample returns o.k.
These work
sample jsp installed with the base 9ias work (eg. demo/basic/hellouser.jsp)
jpdk/snoop/snoop.jsp runs
jpdk/feedback/feedback.jsp runs
but not these
jpdk/helloservletworld/details.jsp
jpdk/lottery/lotto.jsp
they produce this error
Exception:
java.lang.NullPointerException
at jpdk.lottery._lotto._jspService(_lotto.java, Compiled Code)
at oracle.jsp.runtime.HttpJsp.service(HttpJsp.java:119)
at oracle.jsp.app.JspApplication.dispatchRequest(JspApplication.java:385)
at oracle.jsp.JspServlet.doDispatch(JspServlet.java:259)
at oracle.jsp.JspServlet.internalService(JspServlet.java, Compiled Code)
at oracle.jsp.JspServlet.service(JspServlet.java:148)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:588)
at org.apache.jserv.JServConnection.processRequest(JServConnection.java:435)
at org.apache.jserv.JServConnection.run(JServConnection.java, Compiled Code)
at java.lang.Thread.run(Thread.java, Compiled Code)
When I invoke any portlet from jpdk from portal
[28/06/2001 10:43:25:691 CDT] page/Unexpected exception in servlet
java.lang.Exception: Invalid session-data found process 7
at oracle.webdb.page.DataProcessor307.getSessionData(DataProcessor307.java, Compiled Code)
at java.lang.Exception.<init>(Exception.java, Compiled Code)
at oracle.webdb.page.DataProcessor307.getSessionData(DataProcessor307.java, Compiled Code)
at oracle.webdb.page.DataProcessor307.generatePage(DataProcessor307.java, Compiled Code)
at oracle.webdb.page.DataProcessor307.process(DataProcessor307.java, Compiled Code)
at oracle.webdb.page. PageBuilder.process(PageBuilder.java, Compiled Code)
at oracle.webdb.page.ParallelServlet.doGet(ParallelServlet.java, Compiled Code)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:499)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:588)
at org.apache.jserv.JServConnection.processRequest(JServConnection.java, Compiled Code)
at org.apache.jserv.JServConnection.run(JServConnection.java, Compiled Code)
at java.lang.Thread.run(Thread.java, Compiled Code)

Jim,
I see that you posted this twice, it actually is easier for us if you just post the issue once... Thanks.. now on to your problem.
When you say that these portlets work, you are calling them directly from the Apache listener right?
http://myapache.mydomain.com/jpdk/snoop/snoop.jsp
So, you have NO portlets displayed on a portal page?
Everytime I have gotten a blank page, I was using Netscape. In Netscape, I would need to view the page source to view any errors. In IE, it seems to display the errros on the page.
Can you try to view the page source and scroll toward the bottom and see what the browser may say is the problem. This is usually better than what is stated in the jserv.log file.
It may say that it cannot find the jsp or something. They you would first check the provider.xml to make sure that you are pointing them to the correct directory. Then bounce the listener.
Can you check the view page source and tell us what that says?
thanks,
Sue

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