此节从 ALTER DATABASE 设置和镜像数据库状态以及见证服务器(如果有)状态的角度介绍数据库镜像会话。 它针对主要或专门使用 Transact-SQL(而不是使用 SQL Server Management Studio)管理数据库镜像的用户。 提示 除了可以使用 Transact-SQL 以外,还可以使用“数据库属性”对话框的“镜像”页在对象资源管理器中控制会话...
When a subscription is synchronized, different processes occur based on the type of replication you are using:Snapshot replication. Synchronization means that the Distribution Agent reapplies the snapshot at the Subscriber so that schema and data at the subscription database is consistent with the ...
public class DatabaseManager { private AtomicInteger mOpenCounter = new AtomicInteger(); private static DatabaseManager instance; private static SQLiteOpenHelper mDatabaseHelper; private SQLiteDatabase mDatabase; public static synchronized void initializeInstance(SQLiteOpenHelper helper) { if (instance == nu...
Advanced Synchronization Scenarios for SQL Server and SQL Server Compact How to: Deliver Changes in Batches (SQL Server) How to: Handle Data Conflicts and Errors for Database Synchronization (SQL Server) How to: Intercept and Change Data During Synchronization ...
了解如何使用 SQL Server Management Studio 或 Transact-SQL (T-SQL) 暂停和恢复 SQL Server 数据库镜像会话。
了解如何使用資料庫快照集,在 SQL Server 中建立資料庫的唯讀、靜態檢視。 請參閱其優點、先決條件及限制。
Assume that you use Microsoft SQL Server. When you process a database on the source server, you may notice the target servers start to synchronize the database several seconds after the processing is completed, and then the synchronized job may fail. ...
Assume that you use Microsoft SQL Server. When you process a database on the source server, you may notice the target servers start to synchronize the database several seconds after the processing is completed, and then the syn...
We recommend that the database synchronization state be SYNCHRONIZING or SYNCHRONIZED when you create a database snapshot. However, database snapshots can be created when the state is NOT SYNCHRONIZING. For more information, see Database Snapshots with Always On Availability Groups (SQL Server). To...
同步提交模式:事务被提交前需要先等待某个辅助副本将事务日志固化。这种模式下辅助数据库会出于SYNCHRONIZED状态。 AlwaysOn事务提交流程 可用性副本连接状态 DISCONNECTED: 主副本和辅助副本间互相发送ping。默认超时时间为10秒。最低为5秒。建议10秒甚至更长,避免SQL Server过于繁忙。