By default the cluster versioning is set to on when creating the cluster. However, you can manually enable it with the following execution:
-- to avoid errors on dav_res triggers
set triggers off;
-- enable the version control
DB.DBA.DAV_SET_VERSIONING_CONTROL ('/DAV/home/dav/wiki/VOS/', NULL, 'A', 'dav', 'dav_pwd_here');