OCP-1Z0-053-V12.02-634题

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634.Your database instance is running. You are not able to access Oracle Enterprise Manager Database

Control because the listener is not started.

Which tool or utility would you use to start the listener?

A. Oracle Net Manager

B. Listener Control utility

C. Database Configuration Assistant

D. Oracle Net Configuration Assistant

Answer: B

答案解析：

参考：http://blog.csdn.net/rlhua/article/details/12612249

启动监听使用lsnrctl start就可以了

如下：

oracle@rtest ~]$ lsnrctl start

LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 10-OCT-2013 15:57:37

Starting /u01/app/oracle/product/11.2.0/dbhome_1/bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 11.2.0.3.0 - Production

System parameter file is /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora

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

Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=rtest.localdomain)(PORT=1521)))

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=rtest.localdomain)(PORT=1521)))

STATUS of the LISTENER

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

Alias LISTENER

Version TNSLSNR for Linux: Version 11.2.0.3.0 - Production

Start Date 10-OCT-2013 15:57:37

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/11.2.0/dbhome_1/network/admin/listener.ora

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

Listening Endpoints Summary...

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=rtest.localdomain)(PORT=1521)))

The listener supports no services

The command completed successfully

使用监听程序控制实用程序可控制监听程序。使用lsnrctl，可以：

• 启动监听程序

• 停止监听程序

• 检查监听程序的状态

• 根据配置文件参数重新初始化监听程序

• 动态配置多个监听程序

• 更改监听程序口令

该实用程序的基本命令语法为：

LSNRCTL> command [listener_name]

发出lsnrctl命令时，如果没有指定其它监听程序名称或执行SET CURRENT_LISTENER命令，此命令将作用于默认的监听程序（名为LISTENER）。如果监听程序名为LISTENER，则可省略listener_name参数。