Create a change tracking task - Data Transmission Service

You can follow the general procedure in this topic to create and manage a task in change tracking mode.

Background information

Use cases
The change tracking mode allows you to build a distributed application with decoupled data systems, so you can implement your asynchronous replications between these data systems.
Supported databases and data changes
For more information about databases and update types that are supported by the change tracking mode, see Supported sources and targets.
Advanced features
For information about the features of a change tracking task, see Change tracking mode.

Change tracking procedure

You can complete the following higher level steps to create and manage a change tracking task.


Step	Description
1. Set up the networking environment	Before you use DTS for change tracking, prepare the environments that are required for the source and target databases. For more information, see Set up a network environment for replication.
2. Create a change tracking instance	Create a change tracking instance in the DTS console. The instance can be either pay-as-you-go or subscription.
3. Create a change tracking task	Create a change tracking task for the instance that you created. When creating a task, you will set up the connection to the data source and select the objects that are to be tracked.
4. Configure consumer settings	Create consumer groups After you create a change tracking task, create one or more consumer groups that will consume the tracked data. You can create multiple consumer groups for a change tracking task. Consumers in different consumer groups can track data changes from the same data source. For more information, see Create consumer groups. Manage consumer groups Manage the consumer groups of the change tracking task. For example, you can modify passwords for consumer groups or delete consumer groups. For more information, see Manage consumer groups. Reselect objects for change tracking When the change tracking task is running, you can reselect the objects to be tracked. For more information, see Modify the objects for change tracking.
4. Consume tracked data	Use a Kafka client to consume tracked data. For more information, see Use a Kafka client to consume tracked data.
5. Stop the change tracking task	If you want to stop the change tracking task, delete the instance. Pay-as-you-go: You can delete the change tracking instance that is no longer needed. Subscription: A subscription change tracking instance cannot be manually deleted. It will be automatically deleted seven days after the expiration date. Note You can also reset a change tracking instance to stop the associated task. For more information, see Reset a change tracking task.