  We investigate the longevity of oscillons numerically, paying particular
attention to radially-symmetric oscillons that have been conjectured to have an
infinitely-long lifetime. In two spatial dimensions, oscillons have not been
seen to decay. In three spatial dimensions, specific initial Gaussian
configurations seem to lead to oscillons with spikes in lifetime that have been
conjectured to be infinite. We study such ``resonant'' oscillons in two and
three spatial dimensions, applying two tests to study their longevity:
parametric resonance and virialization. Without offering a formal proof, our
numerical results, within their precision, offer support for the conjecture
that, in both dimensions, resonant oscillons may be infinitely long-lived.
