Oracle12c数据库更改端口号

修改端口号的整体步骤

1.1、查看当前监听的状态

1.2、停止监听

1.3、修改监听文件的端口号

1.4、修改初始化参数local_listener

1.5、重启监听器

1.6、修改完毕，使用新端口登录测试

实践步骤：

1、查看当前监听的状态

[oracle@localhost ~]$ lsnrctl status

LSNRCTL for Linux: Version 12.1.0.2.0 - Production on 21-DEC-2016 17:34:54

Copyright (c) 1991, 2014, 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 12.1.0.2.0 - Production

Start Date                20-DEC-2016 22:26:52

Uptime                    0 days 19 hr. 8 min. 1 sec

Trace Level               off

Security                  ON: Local OS Authentication

SNMP                      OFF

Listener Parameter File   /u01/app/oracle/12.1.0/db/network/admin/listener.ora

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

Listening Endpoints Summary...

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

(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcps)(HOST=localhost)(PORT=5500))(Security=(my_wallet_directory=/u01/app/oracle/admin/qywsxxdb/xdb_wallet))(Presentation=HTTP)(Session=RAW))

Services Summary...

Service "qyws_jkda" has 1 instance(s).

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

Service "qyws_qyrk" has 1 instance(s).

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

Service "qyws_tjzb" has 1 instance(s).

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

Service "qyws_xnh" has 1 instance(s).

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

Service "qyws_yzxt" has 1 instance(s).

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

Service "qywsxxdb" has 1 instance(s).

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

Service "qywsxxdbXDB" has 1 instance(s).

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

Service "qywsxxdb_pdb1" has 1 instance(s).

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

The command completed successfully

2、停止监听

[oracle@localhost admin]$ lsnrctl stop

LSNRCTL for Linux: Version 12.1.0.2.0 - Production on 21-DEC-2016 17:56:15

Copyright (c) 1991, 2014, Oracle.  All rights reserved.

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

The command completed successfully

3、修改监听文件的端口号

监听文件位置：$ORACLE_HOME/network/admin/通过系统自带vi工具将listener.ora和tnsname.ora文件中port参数的值由1521改成1522，存盘即可。或者通过netca实用程序配置更改监听端口。

4、启动监听程序

[oracle@localhost admin]$ lsnrctl start

LSNRCTL for Linux: Version 12.1.0.2.0 - Production on 21-DEC-2016 17:56:20

Copyright (c) 1991, 2014, Oracle.  All rights reserved.

Starting /u01/app/oracle/12.1.0/db/bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 12.1.0.2.0 - Production

System parameter file is /u01/app/oracle/12.1.0/db/network/admin/listener.ora

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

Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1522)))

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1522)))

STATUS of the LISTENER

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

Alias                     LISTENER

Version                   TNSLSNR for Linux: Version 12.1.0.2.0 - Production

Start Date                21-DEC-2016 17:56:20

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/12.1.0/db/network/admin/listener.ora

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

Listening Endpoints Summary...

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1522)))

The listener supports no services

The command completed successfully

5、修改初始化参数local_listener参数

此处将4和5步骤调换，就是为了通过测试，说明为什么要修改local_listener参数，首先，在不修改该参数的情况，我们注册数据库到监听程序。

[oracle@localhost admin]$ sqlplus / as sysdba

SQL*Plus: Release 12.1.0.2.0 Production on Wed Dec 21 17:56:25 2016

Copyright (c) 1982, 2014, Oracle.  All rights reserved.

Connected to:

Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production

With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options

SQL> show parameter local_li

NAME      TYPE  VALUE

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

local_listener      string

SQL> alter system register;

System altered.

SQL> exit

Disconnected from Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production

With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options

[oracle@localhost admin]$ lsnrctl status

LSNRCTL for Linux: Version 12.1.0.2.0 - Production on 21-DEC-2016 17:56:36

Copyright (c) 1991, 2014, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1522)))

STATUS of the LISTENER

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

Alias                     LISTENER

Version                   TNSLSNR for Linux: Version 12.1.0.2.0 - Production

Start Date                21-DEC-2016 17:56:20

Uptime                    0 days 0 hr. 0 min. 15 sec

Trace Level               off

Security                  ON: Local OS Authentication

SNMP                      OFF

Listener Parameter File   /u01/app/oracle/12.1.0/db/network/admin/listener.ora

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

Listening Endpoints Summary...

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1522)))

The listener supports no services

The command completed successfully

通过手动注册数据库，可以看到数据库并未注册到监听程序，此时的local_listener为默认值，默认情况下会注册默认监听程序。接下来我们修改local_listener参数的值，看看修改后的效果。

SQL> alter system set local_listener="(address = (protocol = tcp)(host = 192.168.227.11)(port = 1522))" scope=both;

System altered.

SQL>

SQL>

SQL> show parameter local_li

NAME      TYPE  VALUE

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

local_listener      string  (address = (protocol = tcp)(ho

st = 192.168.227.11)(port = 15

22))

SQL> exit

Disconnected from Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production

With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options

[oracle@localhost ~]$ lsnrctl status

LSNRCTL for Linux: Version 12.1.0.2.0 - Production on 21-DEC-2016 18:02:09

Copyright (c) 1991, 2014, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1522)))

STATUS of the LISTENER

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

Alias                     LISTENER

Version                   TNSLSNR for Linux: Version 12.1.0.2.0 - Production

Start Date                21-DEC-2016 17:56:20

Uptime                    0 days 0 hr. 5 min. 49 sec

Trace Level               off

Security                  ON: Local OS Authentication

SNMP                      OFF

Listener Parameter File   /u01/app/oracle/12.1.0/db/network/admin/listener.ora

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

Listening Endpoints Summary...

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1522)))

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcps)(HOST=localhost.localdomain)(PORT=5500))(Security=(my_wallet_directory=/u01/app/oracle/admin/qywsxxdb/xdb_wallet))(Presentation=HTTP)(Session=RAW))

Services Summary...

Service "qyws_jkda" has 1 instance(s).

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

Service "qyws_qyrk" has 1 instance(s).

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

Service "qyws_tjzb" has 1 instance(s).

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

Service "qyws_xnh" has 1 instance(s).

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

Service "qyws_yzxt" has 1 instance(s).

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

Service "qywsxxdb" has 1 instance(s).

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

Service "qywsxxdbXDB" has 1 instance(s).

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

Service "qywsxxdb_pdb1" has 1 instance(s).

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

The command completed successfully

可以看到监听程序很快就会自动注册可以识别到的数据库实例。

那么为什么在这里要修改local_listener参数的值呢，默认情况下该参数为空值，依然可以动态将数据库实例自动注册监听呢？首先，我们得知道是pmon进程在实时动态注册数据库的，一般在默认情况下，pmon只会动态注册port等于1521的监听，否则pmon不能动态注册listener，如果想让pmon动态注册listener，那么就需要设置local_listener参数。这也是为什么必须在修改端口时，必须要修改local_listener参数的原因。

来自 “ ITPUB博客 ” ，链接：http://blog.itpub.net/31403259/viewspace-2131183/，如需转载，请注明出处，否则将追究法律责任。

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