Discoverer plus (Java Applet doesnt load)

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hi
i have a problem with discoverer when i try to use discoverer plus
i can connect me via discoverer desktop without problems and view my business area....
the problem occurs when i clic in the conexion link... the browser open me a new browser and it can´t load the applet of JAva
*****the load of the applet of Java has failed*****
ha fallado la carga del applet de Java ( in spanish)
If i open my Java console i get the follow message:
cargar: clase oracle.disco.DiscoApplet no encontrada.
java.lang.ClassNotFoundException: oracle.disco.DiscoApplet
     at sun.applet.AppletClassLoader.findClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at sun.applet.AppletClassLoader.loadClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at sun.applet.AppletClassLoader.loadCode(Unknown Source)
     at sun.applet.AppletPanel.createApplet(Unknown Source)
     at sun.plugin.AppletViewer.createApplet(Unknown Source)
     at sun.applet.AppletPanel.runLoader(Unknown Source)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: open HTTP connection failed.
     at sun.applet.AppletClassLoader.getBytes(Unknown Source)
     at sun.applet.AppletClassLoader.access$100(Unknown Source)
     at sun.applet.AppletClassLoader$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     ... 10 more
Exception in thread "Thread-4" java.lang.NullPointerException
     at sun.plugin.util.GrayBoxPainter.showLoadingError(Unknown Source)
     at sun.plugin.AppletViewer.showAppletException(Unknown Source)
     at sun.applet.AppletPanel.runLoader(Unknown Source)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
java.lang.NullPointerException
     at sun.plugin.util.GrayBoxPainter.showLoadingError(Unknown Source)
     at sun.plugin.AppletViewer.showAppletStatus(Unknown Source)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
How can i solve this problem? I review logs files in EM (section Discoverer but dont tell me valuable information
Any help will be apprecciate.
Alex
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Replay

Dear Mr. Ramirez
I apologize, please, to speak with you in English, I would prefer to speak in Spanish or Portuguese but these forum demands the English.
I'm facing now the same problem taht you faced on apr-2006, see:
basic: Registered modality listener
liveconnect: Invoking JS method: document
liveconnect: Invoking JS method: URL
basic: Referencing classloader: [email protected], refcount=1
network: Connecting https://www.MYOCSPORTAL.com/disco/plus_files/plugin/images/download.jpg with proxy=DIRECT
basic: Loading applet ...
basic: Initializing applet ...
basic: Starting applet ...
basic: httpCompression = true
network: Connecting https://www.MYOCSPORTAL.com/disco/plus_files/disco5i.jarjar with proxy=DIRECT
network: Connecting https://www.MYOCSPORTAL.com/disco/plus_files/oracle/disco/DiscoApplet.class with proxy=DIRECT
network: Connecting https://www.MYOCSPORTAL.com/disco/plus_files/oracle/disco/DiscoApplet.class with proxy=DIRECT
load: class oracle.disco.DiscoApplet not found.
java.lang.ClassNotFoundException: oracle.disco.DiscoApplet
     at sun.applet.AppletClassLoader.findClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at sun.applet.AppletClassLoader.loadClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at sun.applet.AppletClassLoader.loadCode(Unknown Source)
     at sun.applet.AppletPanel.createApplet(Unknown Source)
     at sun.plugin.AppletViewer.createApplet(Unknown Source)
     at sun.applet.AppletPanel.runLoader(Unknown Source)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source
... follows a lot of jav lines...
I'm using a 10g platform, with discover and web forms. Also a OCS 10g platform.
The clients are based on JRE 1.5.0_10, IE sp2, windows XP professional sp2.
I've been working with this annoying problem for a week, and Oracle support team had spinning around the trouble without a valuable working idea.
Certainly, you've solved this situation - I hope so!
Please, can I count on you for any suggestion that can solve my problem?
Thanks in advance for any reply
Best regards
Adilson Brites
Message was edited by:
user546151

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