oracle数据库连接错误解决方法

这个问题是由于实例名错误导致

 

 

正确监听配置方法

ORCAL_BJCIQ_DDDD =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.11.0.91)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = bjciqdb)
    )
  )

SERVICE_NAME为实例名