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11.2.0.4 client fails to establish secure connection (TLS 1.2) to Oracle 12.1 server

AkshayHBJun 8 2022 — edited Jun 8 2022

Hi All,
We have Oracle client 11.2.0.4 installed on our Solaris 10 machine and we were able to successfully establish secure connection (with SSL_VERSION set to 1.0 i.e., TLS 1.0) to 12cR1 server.
Couple of days ago, DBAs updated the configuration to support TLS 1.2 alone and since then client connection is failing.
This thread talks about the workaround (not defining SSL_VERSION parameter in sqlnet.ora), but this isn't working too.
Does this mean secure connection (TLS 1.2) using 11.2.0.4 client to 12cR1 isn't possible?
Thanks and Regards
Akshay

Added on Jun 8 2022

#11gr2, #database-security, #database-security-general, #security, #ssl

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