oracle查询某用户授予出去以及被授予的对象权限

文档课题：oracle查询某用户授予出去以及被授予的对象权限.
> show user
User is "LEO"
> create table test as select * from all_objects;

Table created.

> select count(*) from test;

  COUNT(*)
----------
     54948
> grant select on test to hr;

Grant succeeded
> col privilege for a20
> col type for a10
> col grantee for a15
> select * from user_tab_privs_made

GRANTEE         TABLE_NAME GRANTOR    PRIVILEGE            GRA HIE COM TYPE       INH
--------------- ---------- ---------- -------------------- --- --- --- ---------- ---
HR              TEST       LEO        SELECT               NO  NO  NO  TABLE      NO
PUBLIC          EMP01      LEO        SELECT               NO  NO  NO  TABLE      NO
PUBLIC          LEO        LEO        INHERIT PRIVILEGES   NO  NO  NO  USER       NO
说明：用户LEO授予用户HR在TEST表上的SELECT权限被查询出来.
> show user
USER is "HR"
> select * from user_tab_privs_recd

OWNER           TABLE_NAME GRANTOR    PRIVILEGE            GRA HIE COM TYPE       INH
--------------- ---------- ---------- -------------------- --- --- --- ---------- ---
ORA1            EMPLOYEES  ORA1       SELECT               NO  NO  NO  TABLE      NO
LEO             TEST       LEO        SELECT               NO  NO  NO  TABLE      NO
说明：用户HR被用户LEO授予在TEST表上的SELECT权限被查询出来.