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How is a snapshot generated in transactional replication?
For transactional replication, snapshot generation depends on the setting of the publication property immediate_sync. If the property is set to TRUE (the default when using the New Publication Wizard), a snapshot is generated every time the Snapshot Agent runs, and it can be applied to a Subscriber at any time.
What kind of agent does SQL Server snapshot replication use?
The SQL Server Snapshot Agent always generates the snapshot files, but the agent that delivers the files differs depending on the type of replication being used. Snapshot replication and transactional replication use the Distribution Agent to deliver the files, whereas merge replication uses the SQL Server Merge Agent.
How to replication a table without a primary key?
When we try to add an article to the transactional replication ( sp_addarticle ) for the table without a primary key we get this error: This Microsoft documentation describes replication article types.
When does the snapshot agent take a lock?
Establishes a connection from the Distributor to the Publisher, and then takes locks on published tables if necessary: For merge publications, the Snapshot Agent does not take any locks. For transactional publications, by default the Snapshot Agent take locks only during the initial phase of snapshot generation.
How to troubleshoot replication errors in SQL Server?
Troubleshooting replication errors can be frustrating without a basic understanding of how transactional replication works. The first step in creating a publication is having the Snapshot Agent create the snapshot and save it to the snapshot folder. Next, the Distribution Agent applies the snapshot to the subscriber.
How to create and apply a SQL Server snapshot?
By default, it is then applied by the Distribution Agent (for snapshot and transactional replication) or Merge Agent (for merge subscriptions) for all subscriptions. A snapshot can also be generated using SQL Server Management Studio and Replication Monitor.
What is the error code for transactional replication?
Status: 0, code: 22037, text: ‘The process could not execute ‘sp_replcmds’ on ‘NODE1\\SQL2016′.’. The error typically occurs when the owner of the publisher database is not set correctly.
Who is the subscriber in transactional replication?
The Publisher or Subscriber is a non- SQL Server database, such as Oracle. By default, Subscribers to transactional publications should be treated as read-only, because changes are not propagated back to the Publisher. However, transactional replication does offer options that allow updates at the Subscriber.
Do you have to be read only in transactional replication?
By default, Subscribers to transactional publications should be treated as read-only, because changes are not propagated back to the Publisher. However, transactional replication does offer options that allow updates at the Subscriber.