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What is transactional Replication?
Transactional replication is a feature of Azure SQL Managed Instance and SQL Server that enables you to replicate data from a table in Azure SQL Managed Instance or a SQL Server instance to tables placed on remote databases. This feature allows you to synchronize multiple tables in different databases.
What is the difference between transactional Replication and Merge replication?
Merge Replication is the same as SQL Server Transactional replication; however, Merge replication replicates data from the Publisher to Subscriber and vice-a-versa. Merge replication uses the Snapshot Agent and the Merge Agent.
How does transactional replication work in SQL Server?
By default, transactional replication propagates changes according to transaction boundaries. If transactions are smaller, the Distribution agent is less likely to resend a transaction due to network issues.
Can a Azure SQL managed instance do transactional replication?
However, transactional replication does offer options that allow updates at the Subscriber. Azure SQL Managed Instance can be a publisher, distributor, and subscriber for snapshot and transactional replication. Databases in Azure SQL Database can only be push subscribers for snapshot and transactional replication.
When to use readbatchsize for transactional replication?
When a large number of transactions are written to a publication database, but only a small subset of those are marked for replication, you should use the -ReadBatchSize parameter to increase the read batch size of the Log Reader Agent. This parameter does not apply to Oracle Publishers.
Which is the default Default in transactional replication?
Because the original transaction is applied in smaller units, the Subscriber can access rows of a large logical Publisher transaction prior to the end of the original transaction, breaking strict transactional atomicity. The default is 0, which preserves the transaction boundaries of the Publisher.
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