阅读 20271

删库跑路如何预防?— Oracle创建只读账号详细教程

需求说明

现有数据库账号:HEPSUSR:具有完整权限,增删改查。

需要创建一个数据库账号:HTREADER,对HEPSUSR账号下所有的表具有只读权限。

第一步:创建只读账号

--创建只读账号 第一步
CREATE USER htreader identified by 123456;
复制代码

第二步:赋予账号连接数据库等基本权限

--赋予htreader连接等常规权限
grant connect to htreader;
grant create view to htreader;
grant create session to htreader;
grant create synonym to htreader;
复制代码

第三步:获取原账号的查询权限

获取原账号HEPSUSR用户的所有查询表权限
select 'grant select on '||owner||'.'||object_name||' to htreader;'
from dba_objects
where owner in ('HEPSUSR')
and object_type='TABLE';

--查询结果为新账号的赋值语句,如下图
复制代码

​​

第四步:将原账号权限赋值为新账号

在原账号HEPSUSR下执行,将原账号的查询权限 赋值给新账号
-------
grant select on HEPSUSR.ENTRY_CERT to htreader;
grant select on HEPSUSR.SUB_MESSAGE_INFO to htreader;
grant select on HEPSUSR.ENTRY_CERT_RELATION to htreader;
grant select on HEPSUSR.ENTRY_CERT_RELATION to htreader;
grant select on HEPSUSR.ENTRY_DECL_TAX to htreader;
grant select on HEPSUSR.ENTRY_DOCU to htreader;
grant select on HEPSUSR.ENTRY_FEES to htreader;
grant select on HEPSUSR.ENTRY_GOODS_TAX to htreader;
grant select on HEPSUSR.ENTRY_HEAD to htreader;
grant select on HEPSUSR.ENTRY_LIST to htreader;
grant select on HEPSUSR.ENTRY_WORKFLOW to htreader;
grant select on HEPSUSR.IQ_APPEND to htreader;
grant select on HEPSUSR.IQ_CERT to htreader;
grant select on HEPSUSR.SUB_SWAP to htreader;
grant select on HEPSUSR.VIN_LIST to htreader;
复制代码

第五步:在新账号端创建同位显示表

因为新创建的只读账号,Tables栏中显示为空,我们需要在PL/SQL显示栏中为新账号登录界面添加显示同位元素,如下:

--在原账号HEPSUSR端执行,获取需要显示的表名称
select 'create or replace SYNONYM htreader.'||object_name|| ' for ' ||owner|| '.'||object_name||';'
from dba_objects
where owner in ('HEPSUSR')
and object_type='TABLE'
复制代码

​​

第六步:查询结果在新账号端执行

在只读账号HTREADER端执行:添加显示各个表信息;在SYSNONYM目录下,tables目录下无显示
create or replace SYNONYM htreader.VIN_LIST for HEPSUSR.VIN_LIST;
create or replace SYNONYM htreader.SUB_SWAP for HEPSUSR.SUB_SWAP;
create or replace SYNONYM htreader.SUB_MESSAGE_INFO for HEPSUSR.SUB_MESSAGE_INFO;
create or replace SYNONYM htreader.IQ_CERT for HEPSUSR.IQ_CERT;
create or replace SYNONYM htreader.IQ_APPEND for HEPSUSR.IQ_APPEND;
create or replace SYNONYM htreader.ENTRY_WORKFLOW for HEPSUSR.ENTRY_WORKFLOW;
create or replace SYNONYM htreader.ENTRY_LIST for HEPSUSR.ENTRY_LIST;
create or replace SYNONYM htreader.ENTRY_HEAD for HEPSUSR.ENTRY_HEAD;
create or replace SYNONYM htreader.ENTRY_GOODS_TAX for HEPSUSR.ENTRY_GOODS_TAX;
create or replace SYNONYM htreader.ENTRY_FEES for HEPSUSR.ENTRY_FEES;
create or replace SYNONYM htreader.ENTRY_DOCU for HEPSUSR.ENTRY_DOCU;
create or replace SYNONYM htreader.ENTRY_DECL_TAX for HEPSUSR.ENTRY_DECL_TAX;
create or replace SYNONYM htreader.ENTRY_CONTAINER for HEPSUSR.ENTRY_CONTAINER;
create or replace SYNONYM htreader.ENTRY_CERT_RELATION for HEPSUSR.ENTRY_CERT_RELATION;
create or replace SYNONYM htreader.ENTRY_CERT for HEPSUSR.ENTRY_CERT;
复制代码

第七步:执行完成之后 登录新账号,查看结果

新账号可以查询原账号的所有表结构,但是无法执行 增删改相关操作

第八步:执行删除、修改sql语句测试

附录:Oracle查询账号及权限详细语句

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;
复制代码
文章分类
后端
文章标签