我们知道oracle 默认监听器端口为1521,为了安全起见如何更改成我们自己定义的端口呢 如1523:

首先 lsnrctl stop

更改listener.ora文件

# LISTENER.ORA Network Configuration File: D:\oracle\ora92\network\admin\listener.ora
# Generated by Oracle configuration tools.

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = TCP)(HOST = d10063)(PORT = 1523))
      )
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
      )
    )
  )

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = D:\oracle\ora92)
      (PROGRAM = extproc)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = gsid)
      (ORACLE_HOME = D:\oracle\ora92)
      (SID_NAME = paul)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = paul)
      (ORACLE_HOME = D:\oracle\ora92)
      (SID_NAME = paul)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = test)
      (ORACLE_HOME = D:\oracle\ora92)
      (SID_NAME = test)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = copy)
      (ORACLE_HOME = D:\oracle\ora92)
      (SID_NAME = copy)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = pubtest)
      (ORACLE_HOME = D:\oracle\ora92)
      (SID_NAME = pubtest)
    )
  )

tnsnames.ora 文件

PUBTEST1523 =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = d10063)(PORT = 1523))
    )
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = pubtest)
    )
  ) 

然后再lsnrctl start

就ok了