NZE-29031: SSL handshake is required.
What triggered the Error:
Renegotiation cannot proceed before the SSL handshake is completed.What should we do to fix it:
Enable Oracle Net tracing and attempt the connection again. Contact Oracle customer support with the trace output.
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