Amazon RDS for Oracle Supports Transport Layer Security (TLS) Version 1.2

Transport Layer Security (TLS) is an industry-standard protocol for securing network connections. You can now use TLS version 1.2 to establish a secure network connection to all editions of Amazon Relational Database Service (RDS) for Oracle.

Source: Amazon Web Services News Amazon RDS for Oracle Supports Transport Layer Security (TLS) Version 1.2