NZE-29233: the key object could not be encoded
What triggered the Error:
The key object may be corrupted or may be an unsupported type.What should we do to fix it:
Check the key object being passed to the encoding routine.
If this was not sufficient go over to:
Oracle Official Support Knowledge Center
Or maybe those geeks at: StackOverflow Board
Or maybe those geeks at: StackOverflow Board