首先,传统的Crush Recovery使用的技术是ARISE机制,也就是基于Write Ahead log做三阶段的Recovery,1992的论文:《A Transaction Recovery Method Supporting Fine-Granularity Locking and Partial Rollbacks Using Write-Ahead Logging》提到的方式,SQL Server、MySQL、DB2都严格使用这种方式,整个生命周期如图描述: 但这种方式...
Applies to: SQL ServerThis article provides an overview of business continuity solutions for high availability and disaster recovery in SQL Server, on Windows and Linux.One common task everyone deploying SQL Server has to account for is making sure that all mission critical SQL Server instances and...
Applies to: SQL ServerThis article describes how to view or change the database recovery model by using SQL Server Management Studio or Transact-SQL.A recovery model is a database property that controls how transactions are logged, whether the transaction log requires (and allows) backing up, ...
Therefore, the SQL Server recovery process can take a long time in the presence of long running transactions (such as large bulk insert operations or index build operations against a large table).Also, canceling, or rolling back, a large transaction based on this design can also take a long...
RECOVERY_PENDING: The database is in the process of recovery but has not yet completed. SUSPECT: SQL Server has detected a problem with the database and is unable to recover it. By checking the state of your database using this query, you can determine if your database is in the recove...
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Applies to:SQL Server This article describes how to view or change the database recovery model by using SQL Server Management Studio or Transact-SQL. Arecovery modelis a database property that controls how transactions are logged, whether the transaction log requires (and allo...
a recovery plan is suggested to achieve the goal of the restore operation that is based on the selection of the required backup sets. SQL Server Management Studio (SSMS)uses the backup history in msdbto identify which backups are required to restore a database, and creates a restore plan. ...
Native SQL software is not installed on the host machine the standard wizard-style recovery mode fails or produces insufficient results the source file is large just a few items need to be recovered Tip: Recovery for SQL Server Data Browser can be usedas a preview and recovery tool on both ...
ADR is off by default in SQL Server 2019 (15.x), and can be controlled using DDL syntax:syntaxsql Kopiraj ALTER DATABASE [DB] SET ACCELERATED_DATABASE_RECOVERY = {ON | OFF}; Use this syntax to control whether the feature is on or off, and designate a specific filegroup for the ...