candidates much better. @msc96, considered bremsstrahlung cooling of an inviscid flow, and reported there is significant oscillation of the post-shock region. Since the post-shock flow is of higher density and temperature compared to the pre-shock flow, the cooling rates are higher. If the cooling timescale roughly matches with the infall timescale at the shock the resonance condition occurs and the post-shock flow oscillates. Since the post-shock region is the source of hard X-rays [@ct95], thus its oscillation would be reflected in the oscillation of the emitted hard X-rays — a plausible explanation for QPOs [@cm00]. In this paper, we will focus on the oscillation of the shock front, but now due to viscosity instead of any cooling mechanism. @cd04 [@kc13] had shown that, with the increase of viscosity parameter, in the energy-angular momentum parameter space, the domain of shock decreases. We know viscosity transports angular momentum outwards, while the specific energy increases inwards. How does the general flow properties of matter, which are being launched with same injection speed and temperature, be affected with the increase in viscosity parameter? It has been shown from simulations and theoretical studies that post-shock matter is ejected as jets, however if the shock is 