ORA-12505, TNS:listener does not currently know of SID given in connect desc .

这种情况一般因为数据库的实例名没有给，只给了数据库的服务名

什么是数据库实例名？数据库实例名是用于和操作系统进行联系的标识，就是说数据库和操作系统之间的交互用的是数据库实例名。实例名也被写入参数文件中，该参数为instance_name，在winnt平台中，实例名同时也被写入注册表。数据库名和实例名可以相同也可以不同。在一般情况下，数据库名和实例名是一对一的关系，但如果在oracle并行服务器架构(即oracle实时应用集群)中，数据库名和实例名是一对多的关系。

这种情况一般因为数据库的实例名没有给，只给了数据库的服务名
select INSTANCE_NAME from v$instance;

如何解决呢？
ORASESSION有个DataTypeMap属性

这里可以填上服务名

程序其实可以不用改，只用在服务名前加上sn=就可以了。

这是和用实例名唯一差别的地方

时间： 2024-10-27 10:30:19

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