Oracle® Database 11g / 12c / 18c error codes NZE-29006: The certificate request message is invalid when using SSL 2.0.

NZE-29006: The certificate request message is invalid when using SSL 2.0.

Oracle Error Code: NZE-29006

Cause: There is an error processing the SSL 2.0 REQUEST-CERTIFICATE message.

Action: Enable Oracle Net tracing and attempt the connection again. Contact Oracle customer support with the trace output.