今天就跟大家聊聊有关如何设置Oracle 监听器密码,可能很多人都不太了解,为了让大家更加了解,小编给大家总结了以下内容,希望大家根据这篇文章可以有所收获。
设置 Oracle 监听器密码(LISTENER)
监听器也有安全?Sure!在缺省的情况下,任意用户不需要使用任何密码即通过lsnrctl 工具对Oracle
Listener进行操作或关闭,从
而造成任意新的会话都将无法建立连接。在Oracle 9i
中Oracle监听器允许任何一个人利用lsnrctl从远程发起对监听器的管理。也容易导致数
据库受到损坏。
1.
未设定密码情形下停止监听
[oracle@test ~]$ lsnrctl stop
listener_demo92
-->停止监听,可以看出不需要任何密码即可停止
LSNRCTL for Linux: Version 9.2.0.8.0 - Production on 26-JUN-2011
08:22:26
Copyright (c) 1991, 2006, Oracle Corporation.
All rights reserved.
Connecting to
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=test)(PORT=1521)))
The command completed
successfully
2. 重新启动监听并设置密码
[oracle@test ~]$
lsnrctl
LSNRCTL for Linux: Version 9.2.0.8.0 - Production on 26-JUN-2011
08:24:09
Copyright (c) 1991, 2006, Oracle Corporation.
All rights reserved.
Welcome to LSNRCTL, type "help" for
information.
LSNRCTL> set current_listener
listener_demo92
-->设置当前监听器
Current Listener is
listener_demo92
LSNRCTL>
start
-->启动过程也不需要任何密码,启动的详细信息省略
LSNRCTL>
change_password
-->使用change_password来设置密码
Old
password:
New
password:
Reenter new
password:
Connecting to
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=test)(PORT=1521)))
Password changed for
listener_demo92
The command completed
successfully
LSNRCTL>
save_config
-->注意此处的save_config失败
Connecting to
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=test)(PORT=1521)))
TNS-01169: The listener has not recognized the password
LSNRCTL> set
password
-->输入新设定的密码验证
Password:
The command completed
successfully
LSNRCTL>
save_config
-->再次save_config成功
Connecting to
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=test)(PORT=1521)))
Saved listener_demo92 configuration
parameters.
Listener Parameter File
/oracle/92/network/admin/listener.ora
Old Parameter File
/oracle/92/network/admin/listener.bak
The command completed
successfully
-->增加密码之后可以看到listener.ora文件中有一条新增的记录,即密码选项(注:尽管使用了密码管理方式,仍然可以无需密码启动监听)
[oracle@test admin]$ more
listener.ora
#----ADDED BY TNSLSNR 26-JUN-2011 05:12:48---
PASSWORDS_listener_demo92 =
#--------------------------------------------
3. 尝试未使用密码的情况下停止监听
[oracle@test ~]$ lsnrctl stop
listener_demo92
LSNRCTL for Linux: Version 9.2.0.8.0 - Production on 26-JUN-2011
06:09:51
Copyright (c) 1991, 2006, Oracle Corporation.
All rights reserved.
Connecting to
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=test)(PORT=1521)))
TNS-01169: The listener has not recognized the
password
-->收到错误信息,需要使用密码认证
4. 使用密码来停止监听
[oracle@test ~]$ lsnrctl
LSNRCTL> set current_listener
listener_demo92
Current Listener is
listener_demo92
LSNRCTL>
stop
Connecting to
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=test)(PORT=1521)))
TNS-01169: The listener has not recognized the
password
LSNRCTL> set
password
Password:
The command completed
successfully
LSNRCTL>
stop
Connecting to
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=test)(PORT=1521)))
The command completed
successfully
5. save_config失败的问题
-->在 Oracle
9i中,使用save_config命令将会失败
LSNRCTL> save_config
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=)(PORT=)))
TNS-01169: The listener has not recognized the password
-->应该先使用set
password之后再save_config,则保存配置成功。
LSNRCTL> set password
Password:
The command completed successfully
6.
配置listener.ora中ADMIN_RESTRICTIONS参数
参数作用:
当在listener.ora文件中设置了ADMIN_RESTRICTIONS参数后,在监听器运行时,不允许执行任何管理命令,同时set命令将不可用
,不论是在服务器本地还是从远程执行都不行。此时对于监听的设置仅仅通过手工修改listener.ora文件,要使修改生效,只能
使用lsnrctl reload命令或lsnrctl stop/start命令重新载入一次监听器配置信息。
修改方法:
在listener.ora文件中手动加入下面这样一行
ADMIN_RESTRICTIONS_<监听器名> = ON
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