首先我们要知道，在oracle中，什么文件里面有关于端口号的信息，路径如下：

X:\oracle_home\product\11.2.0\dbhome_2\NETWORK\ADMIN

到这个路径下我们可以发现有*.ora文件，那么其中listener.ora和tnsnames.ora这两个文件，就是我们这次需要改动的文件

先来看listener.ora

原内容

# listener.ora Network Configuration File: D:\oracle11g\product\11.2.0\dbhome_2\network\admin\listener.ora

# Generated by Oracle configuration tools.

SID_LIST_LISTENER =

(SID_LIST =

(SID_DESC =

(SID_NAME = CLRExtProc)

(ORACLE_HOME = D:\oracle11g\product\11.2.0\dbhome_2)

(PROGRAM = extproc)

(ENVS = "EXTPROC_DLLS=ONLY:D:\oracle11g\product\11.2.0\dbhome_2\bin\oraclr11.dll")

)

)

LISTENER =

(DESCRIPTION_LIST =

(DESCRIPTION =

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

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

)

)

ADR_BASE_LISTENER = D:\oracle11g

以上是原文内容，我们的修改如下，红色加粗为修改部分

# listener.ora Network Configuration File: D:\oracle11g\product\11.2.0\dbhome_2\network\admin\listener.ora

# Generated by Oracle configuration tools.

SID_LIST_LISTENER =

(SID_LIST =

(SID_DESC =

(SID_NAME = CLRExtProc)

(ORACLE_HOME = D:\oracle11g\product\11.2.0\dbhome_2)

(PROGRAM = extproc)

(ENVS = "EXTPROC_DLLS=ONLY:D:\oracle11g\product\11.2.0\dbhome_2\bin\oraclr11.dll")

)

(SID_DESC =

(GLOBAL_DBNAME = cisco)

(ORACLE_HOME = D:\oracle11g\product\11.2.0\dbhome_2)

(SID_NAME = cisco)

)

)

LISTENER =

(DESCRIPTION_LIST =

(DESCRIPTION =

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

(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1522))

)

)

ADR_BASE_LISTENER = D:\oracle11g

我们添加了一个SID_DESC，注意里面的GLOBAL_DBNAME和SID_NAME仍然是你安装oracle时的SID

下面就是在LISTENR里面修改你想要的端口号PORT=xxx

下面再看tnsnames.ora

原文内容

# tnsnames.ora Network Configuration File: D:\oracle11g\product\11.2.0\dbhome_2\network\admin\tnsnames.ora

# Generated by Oracle configuration tools.

CISCO =

(DESCRIPTION =

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

(CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = cisco)

)

)

ORACLR_CONNECTION_DATA =

(DESCRIPTION =

(ADDRESS_LIST =

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

)

(CONNECT_DATA =

(SID = CLRExtProc)

(PRESENTATION = RO)

)

)

LISTENER_CISCO =

(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))修改后的

# tnsnames.ora Network Configuration File: D:\oracle11g\product\11.2.0\dbhome_2\network\admin\tnsnames.ora

# Generated by Oracle configuration tools.

CISCO =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1522))

(CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = cisco)

)

)

ORACLR_CONNECTION_DATA =

(DESCRIPTION =

(ADDRESS_LIST =

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

)

(CONNECT_DATA =

(SID = CLRExtProc)

(PRESENTATION = RO)

)

)

LISTENER_CISCO =

(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))可以发现基本没什么变化，只是在CISCO里面的端口号发生了变化，PORT改成与listener.ora文件里面端口号相对应的即可。

好了，修改完后，从services.msc里重启oracle监听器即可。