USERNAME 

VARCHAR2(30) 

Name of the user, or PUBLIC 

GRANTED_ROLE 

VARCHAR2(30) 

Name of the role granted to the user 

ADMIN_OPTION 

VARCHAR2(3) 

Granted with ADMIN option: YES | NO 

DEFAULT_ROLE 

VARCHAR2(3) 

Role is designated as the user's default role: YES | NO 

OS_GRANTED 

VARCHAR2(3) 

Granted by the operating system: Y/N (occurs if configuration parameter OS_ROLES = TRUE)