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Oracle® Database 11g / 12c / 18c error codes NZE-28856: Buffer overflow error
NZE-28856: Buffer overflow error
Oracle Error Code: NZE-28856
Cause: A buffer overflowed during the SSL handshake.
Action: This error is not normally visible to the user. Enable Oracle Net tracing and attempt the connection again. Then contact Oracle customer support with the trace output.