sql server2019部署报错database instant file initialization 禁用,#如何解决SQLServer2019部署时“数据库瞬时文件初始化禁用”错误在进行SQLServer2019的部署时,碰到“数据库瞬时文件初始化禁用”的错误是一种常见情况。这通常与Windows操作系统的安全设置以及SQLServer
它代表的是Windows操作系统的“Instant File Initialization”特性。意思就是在Windows操作系统下,文件在被创建的时候是否执行“zeroing out”任务,也就是把文件系统分配给某个文件的空间都通过写0来清楚原先的数据。开启了文件及时初始化后在Windows下我们删除一个文件其实并没有把磁盘上的数据清除,而是留到下一次这部分...
二.背景(Contexts) 数据库服务器在为表分配初始值的时候很慢,分配初始值40GB的数据文件,花了30多分钟,一开始的时候一直认为是服务器磁盘的写入速度太慢造成的,后来经过北京-宋沄剑的提醒:即时文件初始化(Instant File Initialization),设置这一选项之后,速度提升到了19秒,下面将描述这个优化的设置过程。 三.基础知...
在SQL Server 中,可在 sys.dm_server_services 动态管理视图中使用 instant_file_initialization_enabled 的值来确定实例是否启用了即时文件初始化。安全注意事项建议启用即时文件初始化,因为其优势可能远大于安全风险。使用即时文件初始化,只有将新数据写入文件时才会覆盖已删除的磁盘内容。 出于此原因,在数据文件的该特...
Instant file initialization and the transaction log Enable instant file initialization Security considerations Performance considerations Related content Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance In this article, you learn about instant file initialization ...
数据库服务器在为表分配初始值的时候很慢,分配初始值40GB的数据文件,花了30多分钟,一开始的时候一直认为是服务器磁盘的写入速度太慢造成的,后来经过北京-宋沄剑的提醒:即时文件初始化(Instant File Initialization),设置这一选项之后,速度提升到了19秒,下面将描述这个优化的设置过程。
If the file is a log file (LDF) SQL Server always writes a known pattern (other than zeros) to the allocated space. If the file is a data file (MDF/NDF) SQL Server checks the instant file initialization and trace flag 1805 settings to decide if a pattern should be...
Increase the size of an existing file (including autogrow operations). Restore a database or filegroup. In SQL Server, instant file initialization allows for faster execution of the previously mentioned file operations, since it reclaims used disk space without filling that space with zeros. Ins...
LOG ON( name = ‘dbTestLDF’, filename = ‘d:\test\dbTest16.ldf’) select datediff(ms, @dtStart, GetUTCDate()) as [Elapsed MS] go Repeat the above steps after disabling ‘Instant File Initialization’ Actual Scenarios SQL Server 2016 has been vetted by a wide rang...
This is part 2 of my series on ‘Instant File Initialization’ and how that ‘brand name’ actually works under the covers. This post will take a look at what really happens when a database file is created and how the ‘Instant File Initialization’ optimization really helps ...