原文:sql server 备份与恢复系列二事务日志概述　　1.1 日志文件与数据文件一致性　在上一章备份与恢复里了解到事务日志的重要性，这篇重点来了解事务日志。事务日志记录了数据库所有的改变，能恢复该数据库到改变之前的任意状态。在sql server实例每次启动时都会去检查数据文件与日志文件的一致性。包括日志记录的任何已提交的数据必须体现在数据文件上，未被标记为已提交的将禁...

文章 2022-02-17 来自：开发者社区

sql server 完整备份、差异备份、事务日志备份

原文:sql server 完整备份、差异备份、事务日志备份一、理解：　完整备份为基础，完整备份可以实物回滚还原，但是由于完整备份文件过大，对硬盘空间比较浪费这是就需要差异备份或者事务日志备份。　　差异备份还原时，只能还原到备份的那个点，日志备份还原时，可以还原到日志覆盖的时间段的任意点。比如2013-07-...

文章 2022-02-16 来自：开发者社区

SQL Server中灾难时备份结尾日志(Tail of log)的两种方法

简介在数据库数据文件因各种原因发生损坏时，如果日志文件没有损坏。可以通过备份结尾日志（Tail of log)使得数据库可以恢复到灾难发生时的状态。例如: grid.ai 上图中。在DB_1中做了完整备份，在Log_1,Log_2处...

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