mysql 重启监听器_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。

1、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 status

LSNRCTL for Linux: Version 11.1.0.6.0 - Production on 04-APR-2009 16:27:39

Copyright (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 refused

Connecting 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 status

LSNRCTL for Linux: Version 11.1.0.6.0 - Production on 04-APR-2009 16:27:02

Copyright (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 LISTENER

Version TNSLSNR for Linux: Version 11.1.0.6.0 - Production

Start Date 29-APR-2009 18:43:13

Uptime 6 days 21 hr. 43 min. 49 sec

Trace Level off

Security ON: Local OS Authentication

SNMP OFF

Listener Parameter File /u01/app/oracle/product/11.1.0/network/admin/listener.ora

Listener Log File /u01/app/oracle/diag/tnslsnr/devdb/listener/alert/log.xml

Listening 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 start

LSNRCTL for Linux: Version 11.1.0.6.0 - Production on 04-APR-2009 16:27:42

Copyright (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 - Production

System parameter file is /u01/app/oracle/product/11.1.0/network/admin/listener.ora

Log messages written to /u01/app/oracle/diag/tnslsnr/devdb/listener/alert/log.xml

Listening 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 LISTENER

Version TNSLSNR for Linux: Version 11.1.0.6.0 - Production

Start Date 04-APR-2009 16:27:42

Uptime 0 days 0 hr. 0 min. 0 sec

Trace Level off

Security ON: Local OS Authentication

SNMP OFF

Listener Parameter File /u01/app/oracle/product/11.1.0/network/admin/listener.ora

Listener Log File /u01/app/oracle/diag/tnslsnr/devdb/listener/alert/log.xml

Listening 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 stop

LSNRCTL for Linux: Version 11.1.0.6.0 - Production on 04-APR-2009 16:27:37

Copyright (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 reload

LSNRCTL for Linux: Version 11.1.0.6.0 - Production on 04-APR-2009 17:03:31

Copyright (c) 1991, 2007, Oracle. All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.2)(PORT=1521)))

The command completed successfully

5、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 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