I am following this guide to connect to an Oracle DB in Amazon RDS: https://docs.databricks.com/aws/en/query-federation/oracle. I've created the connection, but when I go to test it, it loads for a while and then says "socket closed". From my understanding, this implies that the TCP session establishes (networking is fine) but immediately is closed by Oracle DB for whatever reason. I've gone through all the possibilities: we are using NNE, we checked and server-side NNE is at "REQUESTED" level (should be higher than "ACCEPTED"), we have stable egress IP and it is whitelisted on server side, and we have double-checked the service name. Not sure what else to do. Is there any way to get more info on the Databricks side? I tried checking driver logs but I did not see anything useful. Thanks