After upgrading from 12.2.1.2 to v12.2.1.4 I see activity on port 6200 (default port for ONS service) going to Oracle database server (RAC with ONS service) from my OBEE server. I renamed the ons.jar file on OBIEE apps, restarted the app, but it looks like the ONS is still running.
I compared my old installation 12.2.1.2 ands' see that the ons.jar file is also there, but it was never active/enabled by default. I am trying to disable the ONS serviceon my OBIEE site, but no success. I talked to Oracle support but so far no much help.