ORA-12514: TNS: 监听程序当前无法识别连接描述符中请求的服务

出现这种情况一般都是监听配置不对，不能注册当前的服务，加上以下标注蓝色的部分即可解决问题。

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (GLOBAL_DBNAME = ORCL)
      (ORACLE_HOME = D:appAdministratorproduct11.1.0db_1)
      (SID_NAME = ORCL)
    )
    (SID_DESC =
      (PROGRAM = extproc)
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = D:appAdministratorproduct11.1.0db_1)
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
    )
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    )
  )