[Oracle] 如何使用触发器达成IP限制用户登录
发布时间：2021-11-26 20:54:45 所属栏目：教程 来源：互联网
导读：下面是一个触发器的例子： 复制代码 代码如下: create or replace trigger logon_ip_control after logon on database declare ip STRING(30); user STRING(30); begin SELECT SYS_CONTEXT(USERENV,SESSION_USER) into user from dual; SELECT SYS_CONTEXT(U
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下面是一个触发器的例子： 复制代码 代码如下: create or replace trigger logon_ip_control after logon on database declare ip STRING(30); user STRING(30); begin SELECT SYS_CONTEXT('USERENV','SESSION_USER') into user from dual; SELECT SYS_CONTEXT('USERENV','IP_ADDRESS') into ip from dual; if user='EPAY_USER' THEN IF ip not in ('192.168.219.20','192.168.219.22') THEN raise_application_error(-20001,'User '||user||' is not allowed to connect from '||ip); END IF; END IF; end; / 该触发器对用户EPAY_USER进行了IP限制（只允许'192.168.219.20','192.168.219.22'，如果需要设置IP段，用%或?代替即可，如'192.168.219.%‘）。 下面看几个例子测试一下： 1）从非允许IP地址登陆 （192.168.219.21），连接失败 复制代码 代码如下: [oracle@lxdb2 ~]$ sqlplus epay_user@pri SQL*Plus: Release 11.2.0.3.0 Production on Wed Jul 3 19:23:48 2013 Copyright (c) 1982, 2011, Oracle. All rights reserved. Enter password: ERROR: ORA-00604: error occurred at recursive SQL level 1 ORA-20001: User EPAY_USER is not allowed to connect from 192.168.219.21 ORA-06512: at line 10 2）从允许IP地址登陆（192.168.219.22），连接成功 复制代码 代码如下: [oracle@lxdb1 ~]$ sqlplus epay_user SQL*Plus: Release 11.2.0.3.0 Production on Wed Jul 3 11:24:25 2013 Copyright (c) 1982, 2011, Oracle. All rights reserved. Enter password: Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options 3）从本地登陆(192.168.219.23）不受IP限制影响，连接成功 复制代码 代码如下: [oracle@lxdb1 ~]$ sqlplus epay_user SQL*Plus: Release 11.2.0.3.0 Production on Wed Jul 3 11:24:25 2013 Copyright (c) 1982, 2011, Oracle. All rights reserved. Enter password: Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options  （编辑：南通站长网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
