How to check the privileges assigned to a role

Privileges assigned to a role
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select * from dba_sys_privs where grantee='DBA';
/* here DBA is role name */


Privileges and roles assigned to user
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Select a.grantee User_name, a.granted_role role, b.privilege from DBA_ROLE_PRIVS a, DBA_SYS_PRIVS b where

a.granted_role=b.grantee and a.grantee='SCOTT'
check more about this on https://forums.oracle.com/thread/2140697