oracle中查看用户权限

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





注意：

1、以下语句可以查看Oracle提供的系统权限

select name from sys.system_privilege_map



2、查看一个用户的所有系统权限(包含角色的系统权限)

Sql代码
1.select privilege from dba_sys_privs where grantee='DATAUSER'
2.union
3.select privilege from dba_sys_privs where grantee in (select granted_role from dba_role_privs where grantee='DATAUSER' );
select privilege from dba_sys_privs where grantee='DATAUSER'
union
select privilege from dba_sys_privs where grantee in (select granted_role from dba_role_privs where grantee='DATAUSER' );


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1.查看表结构：desc表名

2.查看当前用户的表：

select table_name from user_tables;
3.查看所有用户的表名：

select table_name from all_tables;
4.查看所有表名（其中包括系统表）

select table_name from all_tables;
5.查看所有的表:

select * from tab/dba_tables/dba_objects/cat;
下面介绍Oracle查询用户表空间 ◆Oracle查询用户表空间：select * from user_all_tables ◆Oracle查询所有函数和储存过程：select * from user_source ◆Oracle查询所有用户：select * from all_users.select * from dba_users ◆Oracle查看当前用户连接：select * from v$Session ◆Oracle查看当前用户权限：select * from session_privs ◆Oracle查看用户表空间使用情况： select a.file_id "FileNo",a.tablespace_name "Tablespace_name", a.bytes "Bytes",a.bytes-sum(nvl(b.bytes,0)) "Used", sum(nvl(b.bytes,0)) "Free", sum(nvl(b.bytes,0))/a.bytes*100 "%free" from dba_data_files a, dba_free_space b where a.file_id = b .file_id(+) group by a.tablespace_name , a.file_id,a.bytes order by a.tablespace_name;