查看用户和默认表空间的关系 select username,default_tablespace from dba_users;
查看当前用户的表 select table_name from user_tables;
查看所有用户的表名 select table_name from all_tables;
查看所有表名(包括系统表) select table_name from all_tables;
查看所有的表 select * from tab/dba_tables/dba_objects/cat;
◆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$Session
◆Oracle查看当前用户权限： select * from session_privs
Oracle查看用户表空间使用情况：
select a.file_id "FileNo" , a.tablespace_name "Tablespace_name",
a.bytes "Bytes" , a.bytes-sum(nvl(b.bytes,0)) "Used",
sum(nvl(b.bytes,0)) "Free" , sum(nvl(b.bytes,0))/a.bytes*100 "%free"
from dba_data_files a, dba_free_space b
where a.file_id=b.file_id(+)
group by a.tablespace_name , a.file_id,a.bytes
order by a.tablespace_name;
1.查看所有用户：
select * from dba_user;
select * from all_users;
select * from user_users;
2.查看用户系统权限：
select * from dba_sys_privs;
select * from all_sys_privs;
select * from user_sys_privs;
3.查看用户对象权限：
select * from dba_tab_privs;
select * from all_tab_privs;
select * from user_tab_privs;
4.查看所有角色：
select * from dba_roles;
5.查看用户所拥有的角色：
select * from dba_role_privs;
select * from user_role_privs;
6.查看角色所拥有的权限:
select * from role_sys_privs;
select * from role_tab_privs;
7.查看所有系统权限 select * from system_privilege_map;
8.查看所有对象权限 select * from table_privilege_map;
9.查看日期等字符集 select * from v$nls_parameters;
10.查看 密码文件的信息v$PWFILE_USERS
