Is there a parameter to adjust for "Main thread waited for qnf for 60 seconds; extending the queue" messages?

I see this warning message pop up in my event_log a couple of times every week recently. The problem resolves on its own shortly after. Anyone know of a parameter that can be adjusted to allow this to run a littler longer before generating a warning?

Shareplex 9.2.4 running on Linux 6, Oracle 11.2.04