Required to alter an existing index.
            The ALTER ANY INDEX system privilege allows a user to:
            
                - Alter indexes on any table owned by any user
 
- Issue the COMMENT statement on any index owned by any
                        user
 
             
         
Grant this system privilege using the WITH ADMIN OPTION, WITH NO
				ADMIN OPTION, or WITH ADMIN ONLY OPTION clause. If you do not specify a clause, the
				default is WITH NO ADMIN OPTION.