Choose three.
Which three are true about patchsets?
A.They are installed via OPatch or OPatchAuto. B.A base release is not needed to install patchsets. C.They can be applied in a rolling fashion for Clusterware and the databases. D.Installing a patchset is considered an "upgrade." E.They can introduce new features. F.They are only released quarterly.正确答案ACE
