如何查看oracle用户具有的权限和角色

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(只能查看登陆用户拥有的角色)所包含的权限sql>select * from role_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

查看某一用户 wkk的拥有的权限：SQL> select * from dba_sys_privs where grantee='Wkk"

比如我要查看用户 wzsb的拥有的角色：SQL> select * from dba_role_privs where grantee='WZSB'

查看一个用户所有的权限及角色select privilege from dba_sys_privs where grantee='WZSB'unionselect privilege from dba_sys_privs where grantee in (select granted_role from dba_role_privs where grantee='WZSB' );

8.当前用户被激活的全部角色  select * from session_roles;

9.查看某个用户所拥有的角色

select * from dba_role_privs where grantee='用户名';

10.查看某个角色所拥有的权限

select * from dba_sys_privs where grantee='CONNECT';

select * from session_privs; --当前用户所拥有的全部权限

11.查看哪些用户具有DBA的角色

select grantee from dba_role_privs where granted_role='DBA'

12.查看Oracle提供的系统权限

select name from sys.system_privilege_map

13. 查询当前用户可以访问的所有数据字典视图。 select * from dict where comments like '%grant%';

14.显示当前数据库的全称select * from global_name;

15.查询sytem用户的所属表空间：

select username,default_tablespace from dba_users  where username=“sytem”