<http://oracle-help.com/oracle-rac/converting-rac-db-to-non-rac-on-normal-file-system/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://oracle-help.com/oracle-rac/converting-rac-db-to-non-rac-on-normal-file-system/>