前言
oracle11g安装教程：https://mp.csdn.net/postedit/84957034
oracle11g配置教程：https://mp.csdn.net/postedit/84970862
su - oracle 切换到oracle用户，如果使用su oracle，则不启动.profile用户环境配置文件
一、Linux Oracle 11g 监听器操作
- 监听器的作用：
Oracle监听器是做什么的呢？它设置在服务端，是基于服务端的一种网络服务，用于监听客户端向数据库端发出的连接
请求。判断一下连接请求是否正确，请求有效就连接，失败就拒绝。所以你要连接远程数据库，那么远程数据库就要配置
1）查看监听器命令：
lsnrctl status输出结果：
[oracle@localhost ~]$ lsnrctl status
LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 13-DEC-2018 11:23:41
Copyright (c) 1991, 2013, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.4.0 - Production
Start Date 13-DEC-2018 10:41:30
Uptime 0 days 0 hr. 42 min. 10 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /home/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File /home/oracle/app/diag/tnslsnr/localhost/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Services Summary...
Service "orcl" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
Service "orclXDB" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
The command completed successfully
2）启动监听器
lsnrctl start输出结果：
[oracle@localhost ~]$ lsnrctl start
LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 13-DEC-2018 11:25:04
Copyright (c) 1991, 2013, Oracle. All rights reserved.
Starting /home/oracle/app/oracle/product/11.2.0/dbhome_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 11.2.0.4.0 - Production
System parameter file is /home/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Log messages written to /home/oracle/app/diag/tnslsnr/localhost/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.4.0 - Production
Start Date 13-DEC-2018 11:25:04
Uptime 0 days 0 hr. 0 min. 0 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /home/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File /home/oracle/app/diag/tnslsnr/localhost/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
The listener supports no services
The command completed successfully
3）停止监听器
lsnrctl stop 输出结果：
[oracle@localhost ~]$ lsnrctl stop
LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 13-DEC-2018 11:24:37
Copyright (c) 1991, 2013, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521)))
The command completed successfully