Oracle 监听器日志配置与管理
--========================
-- Oracle 监听器日志配置与管理
--========================
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
相关阅读:
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$ORACLE_HOME/network/log目录下,与sqlnet.log日志文件处于同一路径
2. 其缺省的文件名为listener.log。对于非缺省的监听器,则产生的日志文件通常为listenername.log
3. 该文件缺省由监听器自动创建,当日志文件丢失时或不存在时,会自动重新创建一个同名的文件,与alert_<SID>.log文件类似
4. 该文件的尺寸会不断自动增长,当尺寸过大时或不便于阅读时,考虑将其备份
5. Oracle监听器在运行时不允许对日志文件做删除,重命名操作
6. 可以设置日志状态为ON或OFF来实现启用或关闭日志
二、设置日志文件目录及路径
1. 设置日志文件目录的两种方法
lsnrctl SET LOG_DIRECTORY directory
LSNRCTL> SET LOG_DIRECTORY /usr/oracle/admin/log
2. 设置日志文件的两种方法
lsnrctl SET LOG_FILE file_name
LSNRCTL> SET LOG_FILE file_name
3. 设置日志的状态
lsnrctl SET LOG_STATUS {on | off}
LSNRCTL> SET LOG_STATUS {on | off}
4. 演示设置
a. 切换到日志目录查看日志文件
[oracle@test ~]$ 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
[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
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
[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
[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
#--------------------------------------------