地址如下：C:\oracle\product\10.2.0\db_1\NETWORK\ADMIN
格式为：
ORCL =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.42.130)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = ORCL)
)
)
注：这里只列出了几个关键设置，全部的配置请详见sample目录下的tnsnames.ora文件。
