方法如下：1.首先请一定要备份数据库（要减小或清除日志文件的数据库）2.在数据库上点鼠标右键，选择并打开属性窗口,找到选项一栏,将故障还原里的完全改为简单。
方法如下：
1.首先请一定要备份数据库（要减小或清除日志文件的数据库）
2.在数据库上点鼠标右键，选择并打开"属性"窗口,找到"选项"一栏,将故障还原里的"完全"改为"简单"。如下图：
经过查看日志文件大小，说明该数据库日志文件内容已经安全的清除了！！！~~
6、收缩操作完成后，务必参照“第二步”，将“故障还原”模型重新改为"完全"！
其他的一些可选操作:
1、新建一个数据库时（也可以是已建立的数据库），最好事先限制日志文件的增长大小及增长方式，如下图：
这里的相关设置根据数据库的应用情况有很大区别，一般将日志文件的“最大文件大小”设为1G(1024MB)比较合适。当然，这个没有固定的标准，随便了。
另外，建议定期查看日志文件的大小，有需要时就进行一次数据库收缩操作！这真的是一个很好的习惯和操作方法！~
本文出自 “瞌睡虫的唠叨” 博客，请务必保留此出处
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