DBA_TAB_PRIVS

SQL> DESC DBA_TAB_PRIVS

 Name                                     Null?    Type
 ------------------------------- ------------------ ----------------------------
 GRANTEE                         NOT NULL            VARCHAR2(30)
 OWNER                             NOT NULL          VARCHAR2(30)
 TABLE_NAME                 NOT NULL            VARCHAR2(30)
 GRANTOR                        NOT NULL          VARCHAR2(30)
 PRIVILEGE                       NOT NULL            VARCHAR2(40)
 GRANTABLE                                                  VARCHAR2(3)
 HIERARCHY                                                    VARCHAR2(3)