oracle常用的一些查询命令

 

1.查看所有用户

select * from dba_users;
select * from all_users;
select * from user_users;

2.查看用户或角色系统权限（直接赋值给用户或角色的系统权限）

select * from dba_sys_privs;
select * from user_sys_privs;

3.查看角色（只能查看登录用户拥有的角色）所包含的权限

select * fromrole_sys_privs;

4.查看用户对象权限

select * from dba_tab_privs;
select * from all_tab_privs;
select * from user_tab_privs;

5.查看所有角色

select * from dba_roles;

6.查看用户或角色所拥有的角色；

select * from dba_role_privs;
select * from user_role_privs;

7.查看哪些用户有sysdba 或sysoper系统权限（查询时需要相应权限）

select * from v$pwfile_users

比如要查看用户wzsb 的拥有的权限

select * from dba_sys_privs where grantee ='wzsb';

比如要查看用户wzsb拥有的角色

select * from dba_role_privs where grantee = 'wzsb';


查看一个用户所拥有的权限及角色

select privilege from dba_sys_privs where grantee ='wzsb'

union

select privilege from dba_sys_privs where grantee in

(select granted_role from dba_role_privs where grantee ='wzsb');