RCMP is to be provided only on request by the Visa Officer. It's clearly mentioned on CIC website that PCC's should be provided for all the countries in which the person has lived for more than 6 months except CANADA.
http://www.cic.gc.ca/english/information/security/police-cert/north-america/canada.asp
It Says "Do I need to provide a Police Certificate with my Application for Permanent Residence? No"
http://www.cic.gc.ca/english/information/security/police-cert/north-america/canada.asp
It Says "Do I need to provide a Police Certificate with my Application for Permanent Residence? No"