Syntaxe pour SQL Server : syntaxsql Copie DBCC SHRINKDATABASE ( database_name | database_id | 0 [ , target_percent ] [ , { NOTRUNCATE | TRUNCATEONLY } ] ) [ WITH { [ WAIT_AT_LOW_PRIORITY [ ( <wait_at_low_prior
Connect to the Database Engine. From the Standard bar, select New Query. Copy and paste the following example into the query window and select Execute. This example uses DBCC SHRINKDATABASE (Transact-SQL) to decrease the size of the data and log files in the UserDB database, and to allow...
query or queries holding Sch-S locks. When a timeout occurs, error 49516 is sent to theSQL Server error log, for example:Msg 49516, Level 16, State 1, Line 134 Shrink timeout waiting to acquire schema modify lock in WLP mode to process IAM pageID 1:2865 on database ID 5. Retry ...
--SQL语句的设置方式: alter database数据库名modify file(name=逻辑文件名,maxsize=20)
发生超时时,错误 49516 将发送到SQL Server 错误日志,例如:Msg 49516, Level 16, State 1, Line 134 Shrink timeout waiting to acquire schema modify lock in WLP mode to process IAM pageID 1:2865 on database ID 5。 在WAIT_AT_LOW_PRIORITY模式下重试收缩操作。
sql server dbcc shrinkdatabase 用法 它可以帮助释放未使用的空间,优化数据库存储。执行该操作前需谨慎评估对性能的影响。DBCC SHRINKDATABASE 可以指定收缩的目标百分比。收缩过程可能会导致索引碎片增加。它适用于减小数据库文件的物理大小。在执行时会重新组织数据页。但过度收缩可能导致性能下降。DBCC SHRINKDATABASE ...
SQL Server 压缩资料库(Shrink Database)该不该压缩资料库是DBA 常见的问题。以记录档(LDF, log file) 而言，如果资料库备份排程设定得当，理论上是不需要压缩记录档。但如果因为备份失败或其他因素，造成记录档过大的情况，常见的办法就是压缩记录档取回可用的磁碟空间。至于压缩资料库与资料档(MDF, data file)，...
Views XML data Vectors in the SQL Database Engine Development Internals & architecture Installation Migrate & load data Manage, monitor, & tune Query data Reporting & Analytics Security Tools Tutorials SQL Server on Linux SQL on Azure Azure Arc Resources Reference Download PDF Learn...
Views XML data Vectors in the SQL Database Engine Development Internals & architecture Installation Migrate & load data Manage, monitor, & tune Query data Reporting & Analytics Security Tools Tutorials SQL Server on Linux SQL on Azure Azure Arc Resources Reference Download PDF Learn...
This can significantly impact application query performance and will also cause difficulties completing the necessary maintenance to shrink database files. Introduced in SQL Server 2022 (16.x), the shrink wait at low priority (WLP) feature addresses this problem by taking a schema modify lock in ...