Oracle LSNRCTL------监听器的启动和关闭

      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。

      本文将讨论用LSNRCTL命令启动、关闭和查看监听器的状态的方法。

 

怎样启动、关闭和重新启动oracle监听器

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：

• 监听器的启动时间
• 监听器的运行时间
• 监听器参数文件listener.ora的位置，通常位于$ORACLE_HOME/network/admin目录下
• 监听器日志文件的位置

 

如果oracle监听器没用运行，你将得到如下的信息

$ lsnrctl statusLSNRCTL for Linux: Version 11.1.0.6.0 - Production on 04-APR-2009 16:27:39Copyright (c) 1991, 2007, Oracle. All rights reserved.Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.2)(PORT=1521)))TNS-12541: TNS:no listener TNS-12560: TNS:protocol adapter error TNS-00511: No listener Linux Error: 111: Connection refusedConnecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC)))TNS-12541: TNS:no listener TNS-12560: TNS:protocol adapter error TNS-00511: No listener Linux Error: 2: No such file or directory

 

如果oracle监听器正在运行，你将得到如下信息

$ lsnrctl statusLSNRCTL for Linux: Version 11.1.0.6.0 - Production on 04-APR-2009 16:27:02Copyright (c) 1991, 2007, Oracle. All rights reserved.Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.2)(PORT=1521)))STATUS of the LISTENER————————Alias LISTENERVersion TNSLSNR for Linux: Version 11.1.0.6.0 - ProductionStart Date 29-APR-2009 18:43:13Uptime 6 days 21 hr. 43 min. 49 secTrace Level offSecurity ON: Local OS AuthenticationSNMP OFFListener Parameter File /u01/app/oracle/product/11.1.0/network/admin/listener.oraListener Log File /u01/app/oracle/diag/tnslsnr/devdb/listener/alert/log.xmlListening Endpoints Summary… (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.2)(PORT=1521))) (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC)))Services Summary…Service “devdb” has 1 instance(s). Instance “devdb”, status UNKNOWN, has 1 handler(s) for this service…Service “devdb.thegeekstuff.com” has 1 instance(s). Instance “devdb”, status READY, has 1 handler(s) for this service…Service “devdbXDB.thegeekstuff.com” has 1 instance(s). Instance “devdb”, status READY, has 1 handler(s) for this service…Service “devdb_XPT.thegeekstuff.com” has 1 instance(s). Instance “devdb”, status READY, has 1 handler(s) for this service…The command completed successfully

 

2.启动oracle监听器

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]。

$ lsnrctl startLSNRCTL for Linux: Version 11.1.0.6.0 - Production on 04-APR-2009 16:27:42Copyright (c) 1991, 2007, Oracle. All rights reserved.Starting /u01/app/oracle/product/11.1.0/bin/tnslsnr: please wait…TNSLSNR for Linux: Version 11.1.0.6.0 - ProductionSystem parameter file is /u01/app/oracle/product/11.1.0/network/admin/listener.oraLog messages written to /u01/app/oracle/diag/tnslsnr/devdb/listener/alert/log.xmlListening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.2)(PORT=1521)))Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC)))Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.2)(PORT=1521)))STATUS of the LISTENER————————Alias LISTENERVersion TNSLSNR for Linux: Version 11.1.0.6.0 - ProductionStart Date 04-APR-2009 16:27:42Uptime 0 days 0 hr. 0 min. 0 secTrace Level offSecurity ON: Local OS AuthenticationSNMP OFFListener Parameter File /u01/app/oracle/product/11.1.0/network/admin/listener.oraListener Log File /u01/app/oracle/diag/tnslsnr/devdb/listener/alert/log.xmlListening Endpoints Summary… (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.2)(PORT=1521))) (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC)))Services Summary…Service “devdb” has 1 instance(s). Instance “devdb”, status UNKNOWN, has 1 handler(s) for this service…The command completed successfully

 

3.关闭oracle监听器

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]

$ lsnrctl stopLSNRCTL for Linux: Version 11.1.0.6.0 - Production on 04-APR-2009 16:27:37Copyright (c) 1991, 2007, Oracle. All rights reserved.Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.2)(PORT=1521)))The command completed successfully

 

4.重启oracle监听器

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。

$ lsnrctl reloadLSNRCTL for Linux: Version 11.1.0.6.0 - Production on 04-APR-2009 17:03:31Copyright (c) 1991, 2007, Oracle. All rights reserved.Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.2)(PORT=1521)))The command completed successfully

 

Oracle监听器帮助

1.查看所有的监听器命令

lsnrctl hep命令可以显示所有可用的监听器命令。在oracle11g中其输出如下：

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 helpLSNRCTL for Linux: Version 11.1.0.6.0 - Production on 04-APR-2009 16:12:09Copyright (c) 1991, 2007, Oracle. All rights reserved.The following operations are availableAn asterisk (*) denotes a modifier or extended command:start stop statusservices version reloadsave_config trace spawnchange_password quit exitset* 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 showLSNRCTL for Linux: Version 11.1.0.6.0 - Production on 04-APR-2009 16:22:28Copyright (c) 1991, 2007, Oracle. All rights reserved.The following operations are available after showAn asterisk (*) denotes a modifier or extended command:rawmode displaymoderules trc_filetrc_directory trc_levellog_file log_directorylog_status current_listenerinbound_connect_timeout startup_waittimesnmp_visible save_config_on_stopdynamic_registration