ORA-12505: TNS: 监听程序当前无法识别连接描述符中所给出的SID

应该如何修改啊。跪求解决方案。弄了一天了。

tnsnames.ora Network Configuration File: D:\Oracle10g\network\admin\tnsnames.ora

Generated by Oracle configuration tools.

ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(sid = orcl)
)
)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
)
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
)
)

提示的很明显了：SID错误，这类似mysql的url、用户名、密码中的一项错误；解决方法对症下药就行：找到安装目录下的oci目录下的tnsnames.ora文件，这里面会配置所有的连接地址、端口 检查你登陆的这个这几项是否有错误

这里是我的里面的内容，你自己对着看吧！

tnsnames.ora Network Configuration File: D:\oracle\orcl\product\11.1.0\db_1\network\admin\tnsnames.ora

Generated by Oracle configuration tools.

WEBOFFICE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = MO-20150312OHLK)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = weboffice)
)
)

EDW_JCSS =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.3.15)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = jsjt)
)
)

EA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.3.15)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = EADEV)
)
)

UC =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.3.15)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = UCDEV)
)
)

ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = MO-20150312OHLK)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
)
)

关键问题就在sid=orcl这段了；看看你装的oracle 或者公司服务器oracle的版本，对应不同版本来设置这个值；比如：SID = oracle9i