在数据库服务器上，监听文件的位置是：$ORACLE_HOME/network/admin/listener.ora

试验如下：

移动db服务器上的监听文件，如下命令：

[oracle@ENMOEDU admin]$ ls

listener13101011AM2225.bak  listener13101011AM2741.bak  samples     tnsnames13101011AM2646.bak

listener13101011AM2646.bak  listener.ora                shrept.lst  tnsnames.ora

[oracle@ENMOEDU admin]$ mkdir test

[oracle@ENMOEDU admin]$ mv listener.ora ./test

[oracle@ENMOEDU admin]$ ls

listener13101011AM2225.bak  listener13101011AM2741.bak  shrept.lst  tnsnames13101011AM2646.bak

listener13101011AM2646.bak  samples                     test        tnsnames.ora

先在db服务器上启动监听：

[oracle@ENMOEDU admin]$ lsnrctl

LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 22-JAN-2014 23:48:10

Copyright (c) 1991, 2011, Oracle.  All rights reserved.

Welcome to LSNRCTL, type "help" for information.

LSNRCTL> start

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

TNSLSNR for Linux: Version 11.2.0.3.0 - Production

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

Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ENMOEDU)(PORT=1521)))

Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))

STATUS of the LISTENER

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

Alias                     LISTENER

Version                   TNSLSNR for Linux: Version 11.2.0.3.0 - Production

Start Date                22-JAN-2014 23:48:20

Uptime                    0 days 0 hr. 0 min. 0 sec

Trace Level               off

Security                  ON: Local OS Authentication

SNMP                      OFF

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

Listening Endpoints Summary...

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ENMOEDU)(PORT=1521)))

The listener supports no services

The command completed successfully

查看监听状态，此时没有注册任何服务：

LSNRCTL> status

Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))

STATUS of the LISTENER

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

Alias                     LISTENER

Version                   TNSLSNR for Linux: Version 11.2.0.3.0 - Production

Start Date                22-JAN-2014 23:48:20

Uptime                    0 days 0 hr. 14 min. 20 sec

Trace Level               off

Security                  ON: Local OS Authentication

SNMP                      OFF

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

Listening Endpoints Summary...

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ENMOEDU)(PORT=1521)))

The listener supports no services

The command completed successfully

启动数据库：

#sqlplus / as sydba

#startup

再次查看监听状态：

LSNRCTL> status

Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))

STATUS of the LISTENER

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

Alias                     LISTENER

Version                   TNSLSNR for Linux: Version 11.2.0.3.0 - Production

Start Date                22-JAN-2014 23:48:20

Uptime                    0 days 0 hr. 18 min. 8 sec

Trace Level               off

Security                  ON: Local OS Authentication

SNMP                      OFF

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

Listening Endpoints Summary...

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ENMOEDU)(PORT=1521)))

Services Summary...

Service "ENMOEDU" has 1 instance(s).

Instance "ENMOEDU", status READY, has 1 handler(s) for this service...

Service "ENMOEDUXDB" has 1 instance(s).

Instance "ENMOEDU", status READY, has 1 handler(s) for this service...

The command completed successfully

到此时可以发现服务已经注册到监听器了，可以进行远程cmd下sqlplus(或其他客户端)连接服务器数据库，客户端有两种连接方式如下:

cmd下：

sqlplus sys/oracle@192.168.80.10:1521/ENMOEDU as sysdba --这样就可以远程连接到数据库了。

也可以在客户端的tnsnames文件中配置如下(ORCL是我windows本机配置，ORCL1连接符的配置是为了远程连接服务器数据库)：

LISTENER_ORCL =

(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))

ORACLR_CONNECTION_DATA =

(DESCRIPTION =

(ADDRESS_LIST =

(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))

)

(CONNECT_DATA =

(SID = CLRExtProc)

(PRESENTATION = RO)

)

)

ORCL =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))

(CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = orcl.168.3.2)

)

)

ORCL1=

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.80.10)(PORT = 1521))

(CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = ENMOEDU)

)

)

这时就可以通过连接符ORCL1进行远程数据库连接。

cmd下：sqlplus sys/oracle@ORCL1 as sysdba ---通过连接符远程连接到数据库

如上为没有listener.ora文件时候的动态监听试验，总结待续......