Sql server transactional replication queued updating

Posted by / 20-Nov-2017 07:14

Sql server transactional replication queued updating

After that the agent copies those transaction batches to the distribution database at Distributor.Log Agent uses the sp_replcmdsinternal stored procedure to achieve the next command set marked for replication.If queued updating is used, the changes are stored in a queue; the queued transactions are then applied asynchronously at the Publisher whenever network connectivity is available.Because the updates are propagated asynchronously to the Publisher, the same data may have been updated by the Publisher or by another Subscriber and conflicts can occur when applying the updates.During the snapshot generation, concurrent snapshot processing doesn’t hold shared locks.This allows users not surface any interruptions, while replication created snapshot files initially.The snapshot Agent created in the initial snapshot in transactional replication procedure is the same as used in the snapshot replication.

The Subscriber can receive every incremental change, and it must have tables with the same schema and data, as the tables at publisher.The changes will be sent to the other subscribers in due course.Without immediate updating, your changes are only committed to the local subscriber, and queued for distribution back to the publisher, and following that, the other subscribers.I've found this in msdn, but I don't know if the two-phase commit protocol is referring to all instances (publisher and subscribers, or just one subscriber and the publisher) When data is updated at a Subscriber, it is first propagated to the Publisher and then propagated to other Subscribers.If immediate updating is used, the changes are propagated immediately using the two-phase commit protocol.

sql server transactional replication queued updating-66sql server transactional replication queued updating-6sql server transactional replication queued updating-48