Random Forms Error "Exception In Thread "AWT-EventQueue-2" Java.lang.IllegalStateException: Applet' (Doc ID 2075992.1)

Last updated on FEBRUARY 23, 2023

Applies to:

Symptoms

After Upgrading to 12.2.4, once we login to applications and try to access forms we are getting the following error in the Java console:

Exception in thread "AWT-EventQueue-2" java.lang.IllegalStateException: Applet's parent container not set up
  at sun.plugin2.applet.Plugin2Manager.start(Unknown Source)
  at sun.plugin2.main.client.PluginMain$StartAppletRunner.run(Unknown Source)
  at java.awt.event.InvocationEvent.dispatch(Unknown Source)
  at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
  at java.awt.EventQueue.access$200(Unknown Source)
  at java.awt.EventQueue$3.run(Unknown Source)
  at java.awt.EventQueue$3.run(Unknown Source)
  at java.security.AccessController.doPrivileged(Native Method)
  at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
  at java.awt.EventQueue.dispatchEvent(Unknown Source)
  at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
  at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
  at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
  at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
  at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
  at java.awt.EventDispatchThread.run(Unknown Source)


This issue is occurring in Production and Test.

Firefox works ok

Some IE users do not have this issue.
For the IE 11 users who have the issue, the issue occurs all the time for all forms and they have to use Firefox to launch forms.

Changes

 Upgrade to R12.2.

Cause

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