To switch between update modes To switch between updating modes, you must enable the publication and subscription for both update modes, and then switch between them if necessary.Azure SQL Data Warehouse Parallel Data Warehouse Because queued updating subscriptions allow modifications to the same data at multiple locations, there may be conflicts when data is synchronized at the Publisher.

queued updating subscriptions-90

So of course when I go to the snapshot agent status, I see the error "Explicit value must be specified for identity column in table either when IDENTITY_INSERT is set to ON or when a replication user is inserting into a NOT FOR REPLICATION identity column." The first time this happened, I figured I had done something stupid, so I rolled back by selecting "Disable Publishing and Distribution", and did some digging.

Before I started enabling & setting up replication, all tables are columns had "not for replication" set to "false", which is what I would expect.

This is because set updates made at the Subscriber are propagated by replication as individual UPDATE statements for each row affected.

When data is updated at a Subscriber, it is first propagated to the Publisher and then propagated to other Subscribers.

The following conflicts can occur: When creating a publication and enabling queued updating, replication adds a uniqueidentifier column (msrepl_tran_version) with the default of newid() to the underlying table.

When published data is changed at either the Publisher or the Subscriber, the row receives a new globally unique identifier (GUID) to indicate that a new row version exists.In this case, another Subscriber or the Publisher updated the same row in the publication before this Subscriber transaction was synchronized.If conflicts are expected: Transactional replication supports updates at Subscribers through updatable subscriptions and peer-to-peer replication.When I insert/update data in publisher, the data is replicated to subscriber.If I insert/update data on subscriber the data is not replicated.When I see the replication monitor for errors, it shows an error "Cannot load a DLL or one of its resources".