  The concept of oscillatory Universe appears to be realistic and buried in the
dynamic dark energy equation of state. We explore its evolutionary history
under the frame work of general relativity. We observe that oscillations do not
go unnoticed with such an equation of state and that their effects persist
later on in cosmic evolution. The `classical' general relativity seems to
retain the past history of oscillatory Universe in the form of increasing scale
factor as the classical thermodynamics retains this history in the form of
increasing cosmological entropy.
