对于DBA来说,启动和关闭oracle监听器是很基础的任务,但是Linux系统管理员或者程序员有时也需要在开发数据库中做一些基本的DBA操作,因此了解一些基本的管理操作对他们来说很重要。
在启动、关闭或者重启oracle监听器之前确保使用lsnrctl status命令检查oracle监听器的状态。除了得到监听器的状态之外,你还可以从lsnrctl status命令的输出中得到如下的信息:
如果oracle监听器没用运行,你可以用lsnrctl start命令启动oracle监听器,该命令将启动所有的监听器,如果你只想启动特定的监听器,可以再start后面指定监听器的名字,例如:lsnrctl start [listener-name]。
如果oracle监听器正在运行,可以使用lsnrctl stop命令关闭oracle监听器,该命令将关闭所有的监听器,如果你只想关闭特定的监听器,可以再stop后面指定监听器的名字,例如:lsnrctl stop [listener-name]
用lsnrctl reload重启监听器,此命令可以代替lsnrctl stop和lsnrctl start。重启将会在不需要关闭和启动监听器的情况下读取listener.ora的配置。
- start - Start the Oracle listener
- stop - Stop the Oracle listener
- status - Display the current status of the Oracle listener
- services - Retrieve the listener services information
- version - Display the oracle listener version information
- reload - This will reload the oracle listener SID and parameter files. This is equivalent to lsnrctl stop and lsnrctl start.
- save_config - This will save the current settings to the listener.ora file and also take a backup of the listener.ora file before overwriting it. If there are no changes, it will display the message “No changes to save for LISTENER”
- trace - Enable the tracing at the listener level. The available options are ‘trace OFF’, ‘trace USER’, ‘trace ADMIN’ or ‘trace SUPPORT’
- spawn - Spawns a new with the program with the spawn_alias mentioned in the listener.ora file
- change_password - Set the new password to the oracle listener (or) change the existing listener password.
- show - Display log files and other relevant listener information.
- $ lsnrctl help
-
- LSNRCTL for Linux: Version 11.1.0.6.0 - Production on 04-APR-2009 16:12:09
-
- Copyright (c) 1991, 2007, Oracle. All rights reserved.
-
- The following operations are available
- An asterisk (*) denotes a modifier or extended command:
-
- start stop status
- services version reload
- save_config trace spawn
- change_password quit exit
- set* show*
2.得到指定监听器命令的详细帮助信息
可以使用lsnrctl help得到指定的命令的详细帮助信息。如下所示
- $ lsnrctl help show
-
- LSNRCTL for Linux: Version 11.1.0.6.0 - Production on 04-APR-2009 16:22:28
-
- Copyright (c) 1991, 2007, Oracle. All rights reserved.
-
- The following operations are available after show
- An asterisk (*) denotes a modifier or extended command:
-
- rawmode displaymode
- rules trc_file
- trc_directory trc_level
- log_file log_directory
- log_status current_listener
- inbound_connect_timeout startup_waittime
- snmp_visible save_config_on_stop
- dynamic_registration