root = self._root
root_len = len(root) - 1
self._clear_cache()
self._defpath.update(getlibpaths(self._root, env=self._dbapi.settings))
eroot = os.path.join(self._root, EPREFIX or "/")
self._defpath.update(getlibpaths(eroot, env=self._dbapi.settings))
libs = self._libs
obj_properties = self._obj_properties