Having issues trying to establish a connection from ACF 2021 Ent Oracle driver to Oracle DB 19c. The FW rules are in place and telnet from the server works fine, but we are getting a timeout with the CF Oracle Data source definition. Hostname, SID, Port, URL, driver class are correct. We are stumped at why a timeout would occur, which usually indicates a firewall issue, but the firewall is open. Would anyone have any ideas?

anything in the log?

Nothing except generic timeout msg such as "java.io.IOException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond"

it looks like 19c was added in 2021 update 1. are you able to actually accomplish bidirectional traffic via telnet? i had a problem with one like that once with a connection that was unintentionally 1 directional