Hadronic Decays for the $B_s$ Oscillation Measurement at D\O

The status of the measurements of hadronic $B_s$ decays at the D\O\ experiment at Fermilab is presented. D\O\ limits of the mass difference $\Delta m_s$ in the $B_s$ system have been obtained so far using semileptonic decays. Due to the fact that in hadronic $B_s$ decays all daughter particles are reconstructible a much better sensitivity for larger $\Delta m_s$ values is expected here. Results of the present performance of the triggering strategy and reconstruction of hadronic $B$ decays will be shown.