sys and dba privileged schema over DBMS_REDACT Home > Database Blog > sys and dba privileged schema over DBMS_REDACT The sys and dba privileged schemas can view the details of columns masked using DBMS_REDACT . Sivaram Malayappan sivaram.malayappan@doyensys.com Recent Posts Restricting multiple sessions per user in Oracle APEX APEX USER LOGIN LOGOUT AUDIT Converting UTC to Local Time with DST in Oracle Integration