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

出现以上的问题是无法识别SID，解决方法如下：

1.找到以下目录,/opt/oracle/product/10.2.0/db_1/network/admin，修改listener.ora，（find -name listener.ora即可找到该文件）为：

# listener.ora Network Configuration File: /opt/oracle/product/10.2.0/db_1/network/admin/listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /opt/oracle/product/10.2.0/db_1)
(PROGRAM = extproc)
)
(SID_DESC =
(GLOBAL_DBNAME = NIE)
(ORACLE_HOME = /opt/oracle/product/10.2.0/db_1)
(SID_NAME = NIE)
)
)

LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC3))
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost.localdomain)(PORT = 1523))
)
)
添加红色字体部分，注意GLOBAL_DBNAME 和SID_NAME 改成你自己的。

2.启动TNS监听：lsnrctl start

3.查看监听状态：lsnrctl status