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Oracle 监听器日志配置与管理

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-- Oracle 监听器日志配置与管理
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Oracle 监听器是一个服务器端程序，用于监听所有来自客户端的请求，并为其提供数据库服务。因此对监听器的管理与维护相当重要。

本文主要描述对Oracle监听器日志文件的配置与管理。有关监听器的描述请参考

配置 ORACLE 客户端连接到数据库

配置非默认端口的动态服务注册

一、监听器日志特性

1. 监听器日志是一个纯文本文件，通常位于$ORACLE_HOME/network/log目录下，与sqlnet.log日志文件处于同一路径
2. 其缺省的文件名为listener.log。对于非缺省的监听器，则产生的日志文件通常为listenername.log
3. 该文件缺省由监听器自动创建，当日志文件丢失时或不存在时，会自动重新创建一个同名的文件，与alert_<SID>.log文件类似
4. 该文件的尺寸会不断自动增长，当尺寸过大时或不便于阅读时，考虑将其备份
5. Oracle监听器在运行时不允许对日志文件做删除，重命名操作
6. 可以设置日志状态为ON或OFF来实现启用或关闭日志

二、设置日志文件目录及路径

1. 设置日志文件目录的两种方法

[sql] view plain copy

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lsnrctl SET LOG_DIRECTORY directory



LSNRCTL> SET LOG_DIRECTORY /usr/oracle/admin/log

2. 设置日志文件的两种方法

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lsnrctl SET LOG_FILE file_name



LSNRCTL> SET LOG_FILE file_name

3. 设置日志的状态

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lsnrctl SET LOG_STATUS {on | off}



LSNRCTL> SET LOG_STATUS {on | off}

4. 演示设置
a. 切换到日志目录查看日志文件

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[oracle@test ~]$ cd $ORACLE_HOME/network/log

[oracle@test log]$ ls -hltr

total 348K

-rw-r--r--  1 oracle oinstall 305K Apr  6 05:30 listener.log

-rw-r--r--  1 oracle oinstall  26K Jun 27 01:52 listener_demo92.log

b. 查看当前监听器的状态

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[oracle@test log]$ lsnrctl status listener_demo92



LSNRCTL for Linux: Version 9.2.0.8.0 - Production on 27-JUN-2011 01:54:31



Copyright (c) 1991, 2006, Oracle Corporation.  All rights reserved.



Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=test)(PORT=1521)))

STATUS of the LISTENER

------------------------

Alias                     listener_demo92

Version                   TNSLSNR for Linux: Version 9.2.0.8.0 - Production

Start Date                27-JUN-2011 01:52:18

Uptime                    0 days 0 hr. 2 min. 13 sec

Trace Level               off

Security                  ON

SNMP                      OFF

Listener Parameter File   /oracle/92/network/admin/listener.ora

Listener Log File         /oracle/92/network/log/listener_demo92.log

Listening Endpoints Summary...

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=test)(PORT=1521)))

(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC)))

Services Summary...

Service "demo92" has 1 instance(s).

             Instance "demo92", status READY, has 1 handler(s) for this service...

           The command completed successfully

c. 设置监听器目录及日志文件

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LSNRCTL> set current_listener listener_demo92

Current Listener is listener_demo92

LSNRCTL> set password

Password:

The command completed successfully

LSNRCTL> set log_directory /home/oracle/log

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=test)(PORT=1521)))

listener_demo92 parameter "log_directory" set to /home/oracle/log

The command completed successfully

LSNRCTL> set log_file listener_test.log

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=test)(PORT=1521)))

listener_demo92 parameter "log_file" set to listener_test.log

The command completed successfully

LSNRCTL> set log_status on

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=test)(PORT=1521)))

listener_demo92 parameter "log_status" set to ON

The command completed successfully

LSNRCTL> save_config

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

LSNRCTL> exit

d. 查看新路径下产生的日志文件

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[oracle@test admin]$ cd /home/oracle/log

[oracle@test log]$ ls -hltr

total 16K

-rw-r--r--  1 oracle oinstall  41 Jun 27 02:11 listener_demo92.log  -->设置目录之后生成的

-rw-r--r--  1 oracle oinstall 113 Jun 27 02:12 listener_test.log    -->设置日志文件名之后的新日志文件



[oracle@test log]$ ls -hltr    -->隔段时间查看，原来的日志文件不再增长，使用设定的日志文件名记录日志

total 16K

-rw-r--r--  1 oracle oinstall   41 Jun 27 02:11 listener_demo92.log

-rw-r--r--  1 oracle oinstall 1.3K Jun 27 02:17 listener_test.log

e. 查看listener.ora配置文件的变化

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[oracle@test admin]$ more listener.ora

#----ADDED BY TNSLSNR 27-JUN-2011 02:12:37---

LOG_DIRECTORY_listener_demo92 = /home/oracle/log

LOG_FILE_listener_demo92 = listener_test.log

LOGGING_listener_demo92 = ON

#--------------------------------------------

三、日志文件的备份与重命名

通常情况下，需要停止监听器来对日志文件进行备份，下面使用不停止监听的情况下对日志文件重命名以实现备份
1. Windows平台的处理

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C:/>cd /oracle/ora92/network/log     -->切换到监听器日志文件所在目录

C:/oracle/ora92/network/log> lsnrctl set log_status off -->暂停或脱机记录日志文件

C:/oracle/ora92/network/log> rename listener.log listener.old -->重命名日志文件，一般加上日期

C:/oracle/ora92/network/log> lsnrctl set log_status on -->联机监听器日志文件，会自动重新创建一个新的日志文件

2. Unix/Linux平台的处理

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$ lsnrctl set log_status off

$ mv listener.log listener.old -->另一种方法，cp listener.log /log/bak/. 然后 cp /dev/null >listener.log

$ lsnrctl set log_status on

3. 演示Linux平台下重命名日志文件

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[oracle@test ~]$ cd /home/oracle/log

[oracle@test log]$ lsnrctl set log_status off  -->如果存在密码，应使用LSNRCTL界面来完成



LSNRCTL for Linux: Version 9.2.0.8.0 - Production on 27-JUN-2011 02:41:09



Copyright (c) 1991, 2006, Oracle Corporation.  All rights reserved.



Connecting to (ADDRESS=(PROTOCOL=tcp)(PORT=1521))

LISTENER parameter "log_status" set to OFF

The command completed successfully

[oracle@test log]$ mv listener_test.log listener_test.old

[oracle@test log]$ lsnrctl set log_status on



LSNRCTL for Linux: Version 9.2.0.8.0 - Production on 27-JUN-2011 02:41:31



Copyright (c) 1991, 2006, Oracle Corporation.  All rights reserved.



Connecting to (ADDRESS=(PROTOCOL=tcp)(PORT=1521))

LISTENER parameter "log_status" set to ON

The command completed successfully