下面是一个示例,演示如何将数据库从单用户模式恢复为多用户模式: -- 将数据库设置为单用户模式USEmaster;ALTERDATABASE[YourDatabase]SETSINGLE_USERWITHROLLBACKIMMEDIATE;-- 执行一些恢复操作...-- 恢复多用户模式USEmaster;ALTERDATABASE[YourDatabase]SETMULTI_USER;
USEmaster; GOALTERDATABASEAdventureWorks2022SETSINGLE_USERWITHROLLBACKIMMEDIATE; GOALTERDATABASEAdventureWorks2022SETREAD_ONLY; GOALTERDATABASEAdventureWorks2022SETMULTI_USER; GO 相关内容 ALTER DATABASE (Transact-SQL) SQL Server 单用户模式 其他资源 ...
USE master; GO ALTER DATABASE AdventureWorks2022 SET SINGLE_USER WITH ROLLBACK IMMEDIATE; GO ALTER DATABASE AdventureWorks2022 SET READ_ONLY; GO ALTER DATABASE AdventureWorks2022 SET MULTI_USER; GO 相關內容 ALTER DATABASE (Transact-SQL) SQL Server 的單一使用者模式其他...
ALTERDATABASE[MyDB]SETMULTI_USERWITHROLLBACKIMMEDIATE 报错: Msg 5064, Level 16, State 1, Line 1 Changes to the state or options of database 'MyDB' cannot be made at this time. The database is in single-user mode, and a user is currently connected to it. Msg 5069, Level 16, State...
72 ALTER DATABASE database SET SINGLE_USER。 73 --该命令限制用户只能逐个访问数据库。 74 75 ALTER DATABASE database SET RESTRICTED_USER。 76 --该命令限制只有 db_owner、dbcreator 或 sysadmin 角色的成员才能访问数据库。 77 78 ALTER DATABASE database SET MULTI_USER。
ALTER DATABASE AdventureWorks2022 SET READ_COMMITTED_SNAPSHOT ON; ALLOW_SNAPSHOT_ISOLATION 数据库选项设置为 ON 时,数据库中数据已修改的所有活动事务完成之前,数据库引擎实例不会为已修改的数据开始生成行版本。 如果存在活动的修改事务,数据库引擎将该选项的状态设置为 PENDING_ON。 所有修改事务完成后,...
43--44--例如,可以使用下面的代码将AdventureWorks数据库设置为单用户(single-user)模式:4546ALTERDATABASEAdventureWorksSETSINGLE_USER;4748--一个在单用户(SINGLE_USER)模式下的数据库一次只能有一个连接。在限制用户(RESTRICTED_USER)模式下的数据库只能接受被认为是“合格”用户的连接——这些用户属于dbcreator或...
USE master; GO ALTER DATABASE [database_name] SET SINGLE_USER WITH ROLLBACK IMMEDIATE; GO ALTER DATABASE [database_name] SET READ_ONLY GO ALTER DATABASE [database_name] SET MULTI_USER; GO C. 对数据库启用快照隔离 下面的示例为 AdventureWorks2022 数据库启用快照隔离框架选项。 SQL 复制 US...
The QUOTED_IDENTIFIER setting is always set to ON for multistatement table-valued functions when they are created regardless of the session level setting.The QUOTED IDENTIFIER session setting is honored when multistatement table-valued functions are created.Medium ...
SQL Copy USE master; GO ALTER DATABASE AdventureWorks2022 SET SINGLE_USER WITH ROLLBACK IMMEDIATE; GO ALTER DATABASE AdventureWorks2022 SET READ_ONLY; GO ALTER DATABASE AdventureWorks2022 SET MULTI_USER; GO Related content ALTER DATABASE (Transact-SQL) Single-user mode for SQL ServerAdditional...