服务端的监听器有多种配置方法：1、默认的情况下是一个监听器一个端口，这个时候，
不需要在tnsnames.ora文件里解析监听器信息；2、多个监听器多个端口(端口号可以相同)，
这时候，需要在tnsnames.ora文件里解析监听器信息；3、一个监听器多个端口号的监听器，
这时候同样需要在tnsnames.ora文件里解析监听器信息。
以下是测试第3种情况的过程：
----配置多端口号的监听器：
---配置服务端listener.ora文件：
[oracle@enmo admin]$ cat listener.ora
# listener.ora Network Configuration File: /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = enmo)(PORT = 1521))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
)
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = enmo)(PORT = 1526))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1526))
)
)
---配置服务端tnsnames.ora文件：
[oracle@enmo admin]$ cat tnsnames.ora
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = enmo)(PORT = 1521))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
)
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = enmo)(PORT = 1526))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1526))
)
)
[oracle@enmo admin]$
#配置服务端tnsnames.ora文件是为了解析服务端LISTENER 监听器有两个端口号。
---在数据库修改本地的监听器：
sys@PROD>alter system set local_listener='LISTENER';
System altered.
#修改成功。
---启动服务器端的监听器：
LSNRCTL> start
Starting /u01/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 /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Log messages written to /u01/app/oracle/diag/tnslsnr/enmo/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1526)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1526)))
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.4.0 - Production
Start Date 03-DEC- 23:34:15
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/enmo/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1526)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1526)))
The listener supports no services
The command completed successfully
LSNRCTL>
LSNRCTL>
---把数据库主动注册到监听器：
sys@PROD>alter system register;
System altered.
sys@PROD>/
#注册完成。
---注册数据库后查看监听器的状态：
LSNRCTL> status
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.4.0 - Production
Start Date 03-DEC- 23:34:15
Uptime 0 days 0 hr. 0 min. 28 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/enmo/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1526)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1526)))
Services Summary...
Service "PROD" has 1 instance(s).
Instance "PROD", status READY, has 1 handler(s) for this service...
Service "PRODXDB" has 1 instance(s).
Instance "PROD", status READY, has 1 handler(s) for this service...
The command completed successfully
LSNRCTL>
---Windows客户端通过EZCONNECT使用1521端口连接服务端数据库测试：
C:\Users\Asus>sqlplus sys/oracle@192.168.2.6:1521/PROD as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on星期六12月3 23:58:14
Copyright (c) 1982, , Oracle. All rights reserved.
连接到:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL>
SQL>
SQL> show parameter service
NAME TYPE
------------------------------------ ----------------------
VALUE
------------------------------
service_names string
PROD
#连接成功，证明多端口的监听器配置成功。
---Windows客户端通过EZCONNECT使用1526端口连接服务端数据库测试：
C:\Users\Asus>sqlplus sys/oracle@192.168.2.6:1526/PROD as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on星期日12月4 00:00:17
Copyright (c) 1982, , Oracle. All rights reserved.
连接到:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> show parameter service
NAME TYPE
------------------------------------ ----------------------
VALUE
------------------------------
service_names string
PROD
#连接成功，证明多端口的监听器配置成功。
