oracle 数据库连接错误 ORA12514: TNS: 监听程序当前无法识别连接描述符中请求的服务

listener.ora文件
非正常Oracle配置：
SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (PROGRAM = extproc)
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = E:\Server\oracle\product\10.2.0\db_1)
    )
  )
 
正常Oracle配置
SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (GLOBAL_DBNAME = ORCL)
      (ORACLE_HOME = E:\Server\oracle\product\10.2.0\db_1)
      (SID_NAME = ORCL)
    )
    (SID_DESC =
      (PROGRAM = extproc)
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = E:\Server\oracle\product\10.2.0\db_1)
    )
  )