Data Sync is useful in cases where data needs to be kept updated across several databases in Azure SQL Database or SQL Server. Here are the main use cases for Data Sync: Hybrid Data Synchronization:With Data Sync, you can keep data synchronized between your databases in SQL Server and Azure...
and on Availability Zones for higher fault tolerance. In addition, SQL Database uses the Always On availability group technology from SQL Server for data synchronization and failover. The combination of these technologies enables applications to fully realize the benefits of a mixed storage model and...
当synchronization_state_desc为SYNCHRONIZED时,会同步次要副本。 将REQUIRED_SYNCHRONIZED_SECONDARIES_TO_COMMIT更新为 1。 以下脚本在名为ag1的可用性组上将REQUIRED_SYNCHRONIZED_SECONDARIES_TO_COMMIT设置为 1。 运行以下脚本前,将ag1替换为可用性组的名称: ...
-- displays sync status, send rate, and redo rate of availability groups,-- including distributed AGSELECTag.nameAS[AGName], ag.is_distributed, ar.replica_server_nameAS[AG], dbs.nameAS[Database], ars.role_desc, drs.synchronization_health_desc, drs.log_send_queue_size, drs.log_send_rate...
The former primary databases become secondary databases and data synchronization resumes.An availability group fails over at the level of an availability replica. Failovers aren't caused by database issues such as a database becoming suspect due to a loss of a data file, deletion of a data...
The data types that they support do not have one-to-one correspondence. In this case, the task may fail or data loss may occur. We recommend that you evaluate the impact of data type conversion on your business. For more information, see Data t...
If you perform both full data synchronization and incremental data synchronization, the data logs of the source database must be retained for at least seven days. Otherwise, DTS may fail to obtain the data logs and the task may fail. In some cases, da...
Similar to AGs, but this time using the transaction log as the synchronization method, the data propagation can be started well in advance of the server switch. At the time of the switch, once all traffic is stopped at the source, a final transaction log would need to be taken, copied,...
WHILE 1=1BEGINSELECTdrcs.database_name, ars.role_desc, drs.log_send_queue_size, drs.log_send_rate, ars.recovery_health_desc, ars.connected_state_desc, ars.operational_state_desc, ars.synchronization_health_desc, *FROMsys.dm_hadr_availability_replica_states ...
Reinitialize affected subscribers or execute sp_addtabletocontents to ensure that data added is included in the next synchronization. 4837 16 No Cannot bulk copy into a table "%.*s" that is enabled for immediate-updating subscriptions. 4838 16 No The bulk data source does ...