在sql2005中，还原增量数据备份文件时，出现“无法还原日志备份或差异备份，因为没有文件可用于前滚”是咋回事

---------------------------------- restore headeronly from bak2              --从差异备份中恢复 restore database d2 from bak2 with file=1,norecovery    restore database d2 from bak2 with file=5,recovery ----------------------------------
------解决方案--------------------
探讨

SQL code----------------------------------restore headeronlyfrom bak2--从差异备份中恢复restoredatabase d2from bak2withfile=1,norecoveryrestoredatabase d2from bak2withfile=5?-

------解决方案--------------------
探讨

SQL code
---------------------------------- 
restore headeronly from bak2              --从差异备份中恢复 
restore database d2 from bak2 with file=1,norecovery    
rest……