Oracle Applications Technology Stack 12.2.4 - Cannot open Oracle Forms: Java null pointer exception error with Java 6 Update 27 Java Plug-in on Client Machine

Oracle Applications Technology Stack 12.2.4 - Cannot open Oracle Forms: Java null pointer exception error with Java 6 Update 27 Java Plug-in on Client Machine

basic: exception: java.lang.NoClassDefFoundError: oracle/bali/share/sort/Comparator.
java.lang.RuntimeException: java.lang.NoClassDefFoundError: oracle/bali/share/sort/Comparator
at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: oracle/bali/share/sort/Comparator


Caused by: java.lang.ClassNotFoundException: oracle.bali.share.sort.Comparator
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 39 more
Exception: java.lang.RuntimeException: java.lang.NoClassDefFoundError: oracle/bali/share/sort/Comparator 


java.lang.ClassNotFoundException: oracle.apps.fnd.formsClient.FormsLauncher.class

Workaround:

You can try below:

1. Navigate Start > Control Panel > Java Console > General tab > Temporary Internet Files > View
next select ALL files and then Remove/ Delete them, then OK

2. Navigate Start > Control Panel > Java Console > General tab > Temporary Internet Files > Settings
uncheck the box "Keep temporary files on my computer", then OK 

3. Physically delete the Java cache dir under the USER_HOME. This will recreate on next Java run. Retest the issue

4. If issue persists, try renaming fndbalishare.jar under 

/sid/applmgr/fs1/EBSapps/comn/java/classes/oracle/apps/fnd/jar

or you can force regeneration of all product jar files if issue persists. 


If hitting the issue on Internet Explorer, follow additional steps below.

1. Try the "No Add-ons" version of IE and confirm the behaviour is the same.

2. Check IE Compatibility Mode. 


Solution:
------------


- Download patch 17243005 from My Oracle support -> Select appropriate platform.
- Extract the patch, click on .exe and select "Run as administrator"
- Apply Patch 17243005: Oracle JDK 6 Update 51 b32

Post Installation:
----------------------

- Control Panel > Programs > Java and right click 
and Open

  Under General tab -> Temporary internet files > Settings, check the location of temporary  files ,go to the directory and delete all files under it.

-  Advanced tab > Security -> General

    Uncheck "Dont prompt for client certificates selection when no certificates"

     Uncheck "Use SSL 2.0 compatabile Client Hello format"

     Click Ok


- Close all Internet Explorer browser sessions and open forms again. This should resolve the issue



Also see other relevant posts:

Oracle Applications DBA version 12.2.3 or 12.2.4 Error Page On HomePage "Error Page You have encountered an unexpected error. Please contact the System Administrator for assistance".

EBS 12.2.3 & 12.2.4 - oacore_server1.out growing large in size JBO DEBUG LOGGING ON WITHOUT -D FLAG, NOTICE LEVEL AND PROD MODE=TRUE