  Deterioration in the dynamical activities may come up naturally or due to
environmental influences in a massive portion of biological and physical
systems. Such dynamical degradation may have outright effect on the substantive
network performance. This enforces to provide some proper prescriptions to
overcome undesired circumstances. Through this article, we present a scheme
based on external feedback that can efficiently revive dynamism in damaged
networks of active and inactive oscillators and thus enhance the network
survivability. Both numerical and analytical investigations are performed in
order to verify our claim. We also provide a comparative study on the
effectiveness of this mechanism for feedbacks to the inactive group or to the
active group only. Most importantly, resurrection of dynamical activity is
realized even in time-delayed damaged networks, which are considered to be less
persistent against deterioration in form of inactivity in the oscillators.
Furthermore, prominence in our approach is substantiated by providing evidence
of enhanced network persistence in complex network topologies taking
small-world and scale-free architectures, which makes the proposed remedy quite
general. Besides the study in network of Stuart-Landau oscillators, affirmative
influence of external feedback has been justified in network of chaotic Rossler
systems as well.
