12514: 监听程序当前无法识别连接描述符中请求的服务
若Oracle出现“监听程序当前无法识别连接描述符中请求的服务”这个错误可以按照以下方法解决：
可以通过这个路径找到一个文本文件：
oracle\product\10.2.0\db_1\NETWORK\ADMIN\listener.ora :
?
?
listener.ora
# listener.ora Network Configuration File: F:\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 = d:\oracle\product\10.2.0\db_1)
????? (PROGRAM = extproc)
??? )
???? (SID_DESC =
????? (GLOBAL_DBNAME = orcl)
????? (ORACLE_HOME =d:\oracle\product\10.2.0\db_1)
????? (SID_NAME = orcl)
??? )
)
LISTENER =
(DESCRIPTION_LIST =
??? (DESCRIPTION =
????? (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
??? )
)
出现“监听程序当前无法识别连接描述符中请求的服务”一般是因为缺少了上面中间位置的
(SID_DESC =
????? (GLOBAL_DBNAME = orcl)
????? (ORACLE_HOME = D:\oracle\product\10.2.0\db_1)
????? (SID_NAME = orcl)
??? )
