Toad Data Point Version: 220.127.116.11 (64 bit)
Oracle12c Version: 18.104.22.168.0
Initially, I was getting a “…no matching authentication protocol” message, but after updating sqlnet.ora with SQLNET.ALLOWED_LOGON_VERSION_SERVER=8, I got an invalid username/password message.
I managed to connect to the same database with the same credentials via SQL Developer.
I then switched to Oracle12c version 22.214.171.124.0 and managed to connect successfully with the same credentials without having to update sqlnet.ora. I will stick with this version for now.
Has anyone in the TFP Community had any success with connecting to Oracle12c version 126.96.36.199.0 ?