Learn about accelerated database recovery (ADR), which redesigned the database engine recovery process to significantly speed up recovery and improve database availability in SQL Server, Azure SQL Database, Azure SQL Managed Instance, and SQL database in
自動認可模式是 SQL Server Database Engine 的預設交易管理模式。 每一個 Transact-SQL 陳述式都會在完成時認可或回復。 陳述式如果成功地完成便被認可;若是遇到任何錯誤則被復原。 只要這個預設模式沒有被外顯交易或隱含交易覆寫,SQL Server 資料庫引擎執行個體的連接都會在自動認...
In Azure SQL Database, some aspects of tempdb behavior and configuration are different from SQL Server.For single databases, each database on a logical server has its own tempdb. In an elastic pool, tempdb is a shared resource for all databases in the same pool but temporary objects created...
The default behavior when using optimistic concurrency control is to use row versioning to allow data readers to see the state of the data before the modification took place. Historical Behavior Historically, the concurrency control model in SQL Server at the server level has been pessimistic and ...
Consult this SQL Server error code list (between 5000 and 5999) to find explanations for error messages for SQL Server database engine events.
在默认的隔离级别Read Committed下,使事务读取Row Versioning数据,只需要把数据库选项READ_COMMITTED_SNAPSHOT设置为ON: ALTERDATABASECURRENTSETREAD_COMMITTED_SNAPSHOTONWITHNO_WAIT; 当启用READ_COMMITTED_SNAPSHOT选项,意味着把数据库的默认隔离级别设置为RCSI。如果禁用READ_COMMITTED_SNAPSHOT选项,意味着数据库的默认...
In Azure SQL Database, some aspects of tempdb behavior and configuration are different from SQL Server.For single databases, each database on a logical server has its own tempdb. In an elastic pool, tempdb is a shared resource for all databases in the same pool but temporary objects created...
As the number of users that access the data increases, it becomes important to have applications that use transactions efficiently. This guide describes the locking and row versioning mechanisms the SQL Server Database Engine uses to ensure the physical integrity of each transaction and provides ...
Once you have migrated your data from Access to SQL Server, you now have a client/server database, which may be an on-premises or a hybrid Azure cloud solution. Either way, Access is now the presentation layer and SQL Server is the data layer. Now is a good time to...
tempdb in Azure SQL Database tempdb in SQL Managed Instance Show 9 more Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance SQL database in Microsoft Fabric This article describes thetempdbsystem database, a global resource available to all users connected to a Database Engine...