Unable to View Monitor Diagram in Oracle Workflow 2.6.5

Question

Hi
When I click 'View Diagram' button in Oracle Workflow in Internet explorer, a blank grey page is displayed. I get following error in java console:
Error loading class: oracle.apps.fnd.wf.Monitor
java.lang.NoClassDefFoundError
java.lang.ClassNotFoundException: oracle.apps.fnd.wf.Monitor
     at com/ms/vm/loader/URLClassLoader.loadClass
     at com/ms/vm/loader/URLClassLoader.loadClass
     at com/ms/applet/AppletPanel.processSentEvent
     at com/ms/applet/AppletPanel.processSentEvent
     at com/ms/applet/AppletPanel.run
     at java/lang/Thread.run
But jar file wfMon.jar is present in OA_JAVA path. It contains Monitor class.
Does anyone know how to resolve this?

Answer 1

Yes, index.html is not relevant, just use it to make absolutely sure noone is able to browse virtual paths, as well as for testing that the virtual mapping is correctly defined..
I struggled with this as well, the only thing I can suggest is that you check a few things:
1. Are you sure that you don't have 2 /OA_JAVA/ definitions in your apache config files, so that the one that apache uses points to a different place than where you have placed your files?
2. Are you absolutely, definitevily sure that you haven't made a typo in your virtual path definition (I did, and it took me an hour to find the error...)?
Check this by putting a html file in the directory, and try to open this directly in your browser (http://yourserver.com/OA_JAVA/index.html), to make sure you don't get a "404 Not Found" http error.
3.
a) Make sure that you got the slashes then correct way, depending on your platform..
b) Make sure to get the capitalisation correct, especially on unix/linux, but possibly this is important in windows as well, as java is case-sensitive too.
c) Make sure you include the trailing slash at the end.
d) Make sure you restart http server after modifications, and if you manually edit a config file you need to run dcmctl updateConfig (this is not necessary if you edit from within the EM Website).
e) Make sure to clear your browser cache and start an entirely new IE browser after every modification (this is important!).
These definitions should work (note the trailing FORWARD-slash):
Windows:
Alias /OA_JAVA/ D:\myfolder\wf\java/
Unix/Linux:
Alias /OA_JAVA/ /myfolder/wf/java/
Go through your config once more, and let us know if you are able to view the html-file on the http://yourserver.com/OA_JAVA/index.html url (of course substituting with your server:port).
Hope this helps..
Jens