Execute anonymous calculations minimum permission
As per Essbase technical refrence minimum permission required to run anonymous calculations is 'Database Manager' but user having CALC privilege also able to run.
http://docs.oracle.com/cd/E40248_01/epm.1112/essbase_tech_ref/frameset.htm?maxl_excalc.html
we provisioned the user to CALC in HSS and we grant execute privilege to run the specified stored calculation script.
even after that the user is able to run anonymous calculations.
Regards
Vazir.