Troubleshooting SSL connections - Amazon Relational Database Service
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Troubleshooting SSL connections

You might query your database and receive the ORA-28860 error.

ORA-28860: Fatal SSL error
28860. 00000 - "Fatal SSL error"
*Cause: An error occurred during the SSL connection to the peer. It is likely that this side sent data which the peer rejected.
*Action: Enable tracing to determine the exact cause of this error.

This error occurs when the client attempts to connect using a version of TLS that the server doesn't support. To avoid this error, edit the sqlnet.ora and set SSL_VERSION to the correct TLS version. For more information, see Oracle Support Document 2748438.1 in My Oracle Support.