List of Cipher Suites

Is there anyway i can identify the supported Cipher suites from RDBMS Oracle Home?

Env Details:-

AIX 7
RDBMS 12.2
GI 12.2

Little Background on the requirement:-

Vendor application is using ODBC to connect to Database using TLS 1.2. If we dont specify cipher suites in sqlnet.ora, the connection is happening in database using Cipher TLS_RSA_WITH_AES_256_GCM_SHA384 (confirmed from tcpdump trace).

As per Enterprise Security policy, we can only use the below Cipher suites

TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 Security team is suggesting to use the Cipher "TLS_DHE_RSA_WITH_AES_256_GCM_SHA384" and Vendor also confirmed that ODBC supports the mentioned Cipher.
But when we test the Cipher by adding to the Cipher list in sqlnet.ora , the connection is failing with Code 5 error in Client side. It seems like the connection is establishing to listener (could see in listener log) and then fails (may be failing in Handshake). I did a sqlnet trace but could not find any clue.

I am trying to find what are the 12.2 supported Cipher suites.

The below 12.1 Oracle Doc lists bunch of Cipher suites. https://docs.oracle.com/database/121/DBSEG/asossl.htm#GUID-D496F6A9-BD28-4B4D-BD77-991F49F036A7

Are those only supported list of Ciphers by Oracle Database?. Please suggest.

Thanks,
Mani

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