ORA-12154: TNS: 没法解析指定的链接标识符

PLsql链接时报错。

ORA-12154: TNS: 没法解析指定的链接标识符

ORCL2 =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST =  192.xxx.xxx.xxx )(PORT = 1521))
    (CONNECT_DATA = 192.xxx.xxx.xxx
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )
错误缘由就是 填写了红色字体。