SQL Server 2008数据库清除日志的问题,SQL2008 的收缩日志 由于SQL2008对文件和日志管理进行了优化，所以以下语句在SQL2005中
SQL2008 的收缩日志
由于SQL2008对文件和日志管理进行了优化，所以以下语句在SQL2005中可以运行但在SQL2008中已经被取消：
(SQL2005)
(SQL2008):
在SQL2008中清除日志就必须在简单模式下进行，等清除动作完毕再调回到完全模式。
优点：此清除日志所运行消耗的时间短，90GB的日志在分钟左右即可清除完毕，做完之后做个完全备份在分钟内即可完成。
缺点： 不过此动作最好不要经常使用，因为它的运行会带来系统碎片。普通状态下LOG和DIFF的备份即可截断日志。
此语句使用的恰当环境：当系统的日志文件异常增大或者备份LOG时间太长可能影响生产的情况下使用。
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