oracle链接的配置--product\11.2.0\client_1\network\admin\tnsnames.ora
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oracle客户端安装路径\product\11.2.0\client_1\network\admin\tnsnames.ora其内容如下:# tnsnames.ora Network Configuration File: E:\Oracle11g-client2-manager\product\11.2.0\client_1\NETWORK\ADMIN\tnsnames.ora# Generated by Oracle configuration tools.DEV = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.30.71)(PORT = 1521)) ) (CONNECT_DATA = (SERVICE_NAME = DEV) ) )CESHISTU = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.30.71)(PORT = 1521)) ) (CONNECT_DATA = (SERVICE_NAME = orcl) ) )MYORCL = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521)) ) (CONNECT_DATA = (SERVICE_NAME = orcl) ) )以这个为例:CESHISTU = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.30.71)(PORT = 1521)) ) (CONNECT_DATA = (SERVICE_NAME = orcl) ) )这里CESHISTU是服务名,我干脆叫它连接的别名,因为特很容易和数据库实例名混淆。这个名字可以随便起,它最终在pl/sql的第三个下拉框数据库显示,而真正确定连接哪个数据库的是SERVICE_NAME = orcl。这个orcl才是数据库实例名。它的连接地址是:(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.30.71)(PORT = 1521))。这些东西当然有相关的管理客户端去设置,否则每个人都要学习这个文件的配置,那就太不人性化了。你可以在配置和移植工具里的Net Manager里配置这些内容,其实质就是在这个文件写这些东西,所以你明白原理以后,配置会更快,更准确。