https://bugzilla.redhat.com/show_bug.cgi?id=1189028
--- Comment #7 from Joe Mario jmario@redhat.com --- An update to my comment 5 above. I'm now wondering if I'm hitting a different problem.
In my testing, if aio-max-nr is lower than what Oracle needs, then it triggers the file desc usage to grow rapidly till the Oracle processes eventually die/error because the system's /proc/sys/fs/file-max-nr value has been hit.
However, once those Oracle processes exit, the file desc usage count drops accordingly.
Joe