连接SID相同数据库实例，这两个实例在不同的服务器上

连接SID相同数据库实例，这两个实例在不同的服务器上

 

例如我的tnsnames 文件

 

# tnsnames.ora Network Configuration File: D:\oracle\product\10.2.0\db_1\NETWORK\ADMIN\tnsnames.ora

# Generated by Oracle configuration tools.

DEV =

  (DESCRIPTION =

    (ADDRESS_LIST =

      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.4.247.92)(PORT = 1521))

    )

    (CONNECT_DATA =

      (SERVICE_NAME = DEV)

    )

  )

 

 

ORCL =

  (DESCRIPTION =

    (ADDRESS_LIST =

      (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))

    )

    (CONNECT_DATA =

      (SERVER = DEDICATED)

      (SERVICE_NAME = orcl)

    )

  )

EXTPROC_CONNECTION_DATA =

  (DESCRIPTION =

    (ADDRESS_LIST =

      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))

    )

    (CONNECT_DATA =

      (SID = PLSExtProc)

      (PRESENTATION = RO)

    )

  )

 红色部分就是相同的实例名（实质上是不同的数据库服务）。 

另一个描述符起个和上一个描述符不同的名称就行。。。。