由于某种原因造成系统停止运行，致使事务在执行过程中以非控制方式终止，这时内存中的信息丢失，而存储在外存上的数据未受影响。-For some reason causing the system to stop running, resulting in transactions in the course of termination of a non-control mode, when the memory information is lost, and the data stored in external memory on unaffected.