PFC and cursors

Hi,

I've read where message cursors should be used when PFC is turned off or
for when consumers fall behind producers. The doc states that in the normal
case, so-called, where consumers keep up with producers, does not involve a
pending cursor of any kind. The configured cursor is only engaged when a
consumer falls behind its producer.

What happens when a consumer catches back up with the producer: does the
configured cursor disengage resulting in messages being passed directly to
the dispatch queue, the way it did before the consumer fell behind? If not,
why?

Thanks,
Paul