Home Database Mysql Tutorial 丢失的数据忘记备份的处理方法[图文]第1/2页

丢失的数据忘记备份的处理方法[图文]第1/2页

Jun 07, 2016 pm 05:58 PM
data

突然间数据库无缘无故损坏了,差异备份或事务日志备份在3点才会自动去做,那么如何将2点到2点40之间的数据恢复呢?这就需要通过备份尾部日志进行恢复了。

环境描述:
  某公司装了一台SQL Server数据库,为了保证数据库能够在出现故障时及时的修复,管理员做了备份操作,比如说完整备份+差异备份或者完整备份+事务日志备份,而且备份的时间是每隔6个小时做一次完整备份,在每天的1点、6点、12点、18点,6个小时之内是每隔1个小时做一次差异备份或事务日志备份,并且和计划任务结合在了一起。

  假如现在存在这样一种场景,在2点40分左右,突然间数据库无缘无故损坏了,差异备份或事务日志备份在3点才会自动去做,那么如何将2点到2点40之间的数据恢复呢?这就需要通过备份尾部日志进行恢复了。

  实施步骤:

  1、 首先创建一个数据库,并在数据库里创建一张表Dreamfire做测试用。

2、 其次创建两个备份设备(备份数据存放的地方),一个存放完整备份的数据,一个存放差异备份的数据。做一次完整备份+差异备份,假如完整备份在1点做完整备份,2点做差异备份。

  先做完整备份:

  

  

  做完完整备份之后,然后在刚才创建的数据库的表中添加一条数据做测试用。

  然后通过差异备份数据库

  

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