TNS:listener does not currently know of service requested in connect descriptor
解决方法如下
打开 C:\oracle\product\10.1.0\Db_1\NETWORK\ADMIN 文件夹下的 listener.ora文件
里面代码如下，把红色部分代码加上
重启 Listener服务。即可。
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oracle\product\10.1.0\Db_1)
(PROGRAM = extproc)
)
(SID_DESC =
(SID_NAME = orcl)
(ORACLE_HOME = c:\oracle\product\10.1.0\Db_1)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
)
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
)
)
)
