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Data Transmission Service:2021

Last Updated:Jun 04, 2026

Features and documentation updates for DTS in 2021.

December 2021

Type	Highlights	References
New	Incremental migration from PolarDB for PostgreSQL (Compatible with Oracle) to a self-managed Oracle database supports the following DDL operations: ALTER TABLE, including ADD COLUMN, DROP COLUMN, ALTER COLUMN, ADDCONSTRAINT, DROP CONSTRAINT, ADDPRIMARY KEY, and ADD UNIQUE CREATE TABLE, DROP TABLE, RENAME TABLE, and TRUNCATE TABLE CREATE INDEX	Migrate data from PolarDB for PostgreSQL (Compatible with Oracle) to a self-managed Oracle database
New	Incremental synchronization and migration from DB2 for LUW to AnalyticDB for PostgreSQL supports the following DDL operations: CREATE DB and DROP DB CREATE TABLE, DROP TABLE, TRUNCATE TABLE, and ALTER TABLE (including RENAME TABLE, ADD COLUMN, DROP COLUMN, and RENAME COLUMN)	Documentation is in progress
Optimization	DTS synchronization and migration tasks support SQL Server 2019 as the source and destination instance.	Supported source and destination databases

November 2021

Type	Description	References
New	Synchronize data from a PolarDB-X 1.0 source instance across Alibaba Cloud accounts (New console).	Configure a task across Alibaba Cloud accounts
New	Schema synchronization between PolarDB-X 1.0 instances (new console).	Synchronize data between PolarDB-X 1.0 instances
Optimization	View retry details for retrying DTS tasks (new console).	None
Optimization	Optimized DTS tasks that use PolarDB-X 1.0, Redis, or DataHub as the source.	None

October 2021

Type	Description	References
New	Synchronize or migrate data from a self-managed Oracle database to Alibaba Cloud Message Queue for Apache Kafka or a self-managed Kafka cluster (New console).	Synchronize data from a self-managed Oracle database to Alibaba Cloud Message Queue for Apache Kafka Migrate data from a self-managed Oracle database to Alibaba Cloud Message Queue for Apache Kafka
New	Synchronize data from a self-managed PostgreSQL database to PolarDB for PostgreSQL (Compatible with Oracle) (New console).	Synchronize data from a self-managed PostgreSQL database to PolarDB for PostgreSQL (Compatible with Oracle)
Optimization	Sort DTS tasks by synchronization or incremental migration latency (new console).	None

September 2021

Type	Description	References
New	Synchronize data between Tair (compatible with Redis) instances. Synchronize data from a Tair (compatible with Redis) instance across Alibaba Cloud accounts (New console).	One-way synchronization across accounts
New	Two-way synchronization between ApsaraDB for MongoDB sharded cluster instances (new console).	Two-way synchronization between ApsaraDB for MongoDB sharded cluster instances

August 2021

Type	Description	References
New	Change tracking for PolarDB-X 1.0 (new console).	Create a change tracking task for PolarDB-X 1.0
New	Synchronize or migrate data from PolarDB-X 2.0 to Elasticsearch (New console).	Synchronize data from PolarDB-X 2.0 to Elasticsearch

July 2021

Type	Description	References
New	Two-way synchronization between self-managed PostgreSQL databases and between ApsaraDB RDS for PostgreSQL instances (new console). Note This feature is available only in the China (Hangzhou), China (Shanghai), and China (Qingdao) regions.	Two-way synchronization between PostgreSQL databases
	Change tracking for self-managed PostgreSQL, ApsaraDB RDS for PostgreSQL, and PolarDB for PostgreSQL (Compatible with Oracle) (new console). Note Change tracking tasks in the China (Hangzhou) and China (Shanghai) regions support schema updates for the source instance.	Create a change tracking task for ApsaraDB RDS for PostgreSQL Create a change tracking task for PolarDB for PostgreSQL (Compatible with Oracle)
	The new console supports the following tasks: Synchronize data from a MongoDB replica set instance to a replica set or sharded cluster instance. Migrate data between MongoDB instances, including views and functions.	Synchronize data from an ApsaraDB for MongoDB replica set instance to an ApsaraDB for MongoDB replica set or sharded cluster instance Perform full data migration from an ApsaraDB for MongoDB standalone instance to an ApsaraDB for MongoDB instance of any architecture Migrate data from an ApsaraDB for MongoDB replica set instance to an ApsaraDB for MongoDB replica set or sharded cluster instance
	Synchronize or migrate data from PolarDB-X 2.0 to Alibaba Cloud Message Queue for Apache Kafka or a self-managed Kafka cluster (new console).	Synchronize data from PolarDB-X 2.0 to Alibaba Cloud Message Queue for Apache Kafka Migrate data from PolarDB-X 2.0 to Alibaba Cloud Message Queue for Apache Kafka
	Upgrade link specifications of subscription and pay-as-you-go instances (new console).	Upgrade the link specifications of an instance
	Switch between subscription and pay-as-you-go billing methods. The instance ID remains unchanged (new console).	Switch between billing methods

June 2021

Type	Description	References
New	Data synchronization from ApsaraDB RDS for SQL Server to ApsaraDB RDS for MySQL (New console).	Synchronize data from ApsaraDB RDS for SQL Server to ApsaraDB RDS for MySQL
	Data migration from a self-managed HBase cluster to AnalyticDB for MySQL is supported in the new console.	Migrate data from a self-managed HBase cluster to AnalyticDB for MySQL 3.0
	Data synchronization from a self-managed Oracle database to DataHub is supported in the Legacy Console.	Synchronize data from a self-managed Oracle database to DataHub

May 2021

Type	Description	References
New	The ETL feature is available in the new console. It supports PolarDB for MySQL as the source and AnalyticDB for MySQL as the destination. Note The ETL feature is in public preview. Click the application link to enable the feature.	Use the DAG mode to configure an ETL task
	Migrate and synchronize data from MySQL (self-managed and ApsaraDB RDS) and PolarDB for MySQL to AnalyticDB for MySQL 3.0 (new console).	Migrate data from ApsaraDB RDS for MySQL to AnalyticDB for MySQL 3.0 Synchronize data from ApsaraDB RDS for MySQL to AnalyticDB for MySQL 3.0 Migrate data from PolarDB for MySQL to AnalyticDB for MySQL 3.0 Synchronize data from PolarDB for MySQL to AnalyticDB for MySQL 3.0
	Data synchronization between SQL Server instances (self-managed SQL Server and ApsaraDB RDS for SQL Server) (New console).	Synchronize data between ApsaraDB RDS for SQL Server instances
	Schema migration and full data migration from Teradata to AnalyticDB for PostgreSQL (New console). Note This feature is available only in the China (Shanghai), China (Qingdao), and China (Zhangjiakou) regions.	Migrate data from Teradata to AnalyticDB for PostgreSQL
	The new console supports configuring change tracking instances (new version). Note The legacy change tracking feature was taken offline on March 31, 2020. Upgrade to the new change tracking feature.	Create a change tracking task for ApsaraDB RDS for MySQL Create a change tracking task for PolarDB for MySQL Create a change tracking task for Oracle

April 2021

Type	Description	References
New	The ETL feature is in public preview. Use it to cleanse and transform data in databases. Note Each Alibaba Cloud account can use two free ETL instances. Only MySQL databases (self-managed and ApsaraDB RDS for MySQL) are supported as source and destination. Source and destination must be in the same region. ETL instances are available only in the China (Hangzhou) and China (Beijing) regions.	Use the DAG mode to configure an ETL task
	The new console supports the following tasks: Data synchronization between MySQL instances (self-managed MySQL and ApsaraDB RDS for MySQL). The source or destination can be a self-managed MySQL database connected over a leased line. Data synchronization from a self-managed SQL Server database on an ECS instance to AnalyticDB for MySQL or AnalyticDB for PostgreSQL.	Synchronize data from a self-managed MySQL database connected over a leased line, VPN gateway, or Smart Access Gateway to an ApsaraDB RDS instance Synchronize data from an ApsaraDB RDS instance to a self-managed MySQL database connected over a leased line, VPN gateway, or Smart Access Gateway Synchronize data from a self-managed SQL Server database on an ECS instance to AnalyticDB for PostgreSQL
	Synchronize data from a self-managed Oracle database to AnalyticDB for PostgreSQL (new console).	Synchronize data from a self-managed Oracle database to AnalyticDB for PostgreSQL
	Migrate or synchronize data from PostgreSQL (self-managed and ApsaraDB RDS) to MySQL (self-managed and ApsaraDB RDS), with schema migration and synchronization support.	Migrate data from ApsaraDB RDS for PostgreSQL to ApsaraDB RDS for MySQL Synchronize data from ApsaraDB RDS for PostgreSQL to ApsaraDB RDS for MySQL
	Synchronize data from a logical database configured in Data Management (DMS) to AnalyticDB for MySQL (new console). Important This feature is available only in the China (Shanghai) and Singapore regions.	Synchronize data from a DMS logical database to AnalyticDB for MySQL 3.0

March 2021

Type	Description	References
New	Synchronize data between PolarDB-X 2.0 instances (new console).	One-way synchronization between PolarDB-X 2.0 instances
	Synchronize data from PolarDB-X 2.0 to ApsaraDB RDS for MySQL or PolarDB for MySQL (new console).	Synchronize data from PolarDB-X 2.0 to ApsaraDB RDS for MySQL Synchronize data from PolarDB-X 2.0 to PolarDB for MySQL
	Migrate data from PostgreSQL (self-managed and ApsaraDB RDS) to MySQL (self-managed and ApsaraDB RDS).	Migrate data from ApsaraDB RDS for PostgreSQL to ApsaraDB RDS for MySQL
	A Change Data Capture (CDC)-based mode is added for ApsaraDB RDS for SQL Server sources, resolving log truncation interruptions and enabling migration of heap tables and tables without primary keys.	Synchronize data from ApsaraDB RDS for SQL Server to AnalyticDB for PostgreSQL Synchronize data from ApsaraDB RDS for SQL Server to AnalyticDB for MySQL 3.0
	Quick diagnostics for migration and synchronization tasks can now detect Database Autonomy Service (DAS) exceptions when diagnosing source database performance. Note The source instance must be connected to DAS, and the database type must be MySQL.	Quick diagnostics
Optimization	Filter DTS instances by RegionId when calling OpenAPI operations.	Query the status of a data migration task (Example)

February 2021

Type	Description	References
Optimization	Timestamp-based incremental mode is available as a scheduling policy for data integration tasks to AnalyticDB for MySQL.	Scheduling policies

January 2021

Type	Description	References
New	You can synchronize data from ApsaraDB RDS for SQL Server to AnalyticDB for MySQL.	Synchronize data from ApsaraDB RDS for SQL Server to AnalyticDB for MySQL 3.0
	Configure a case sensitivity policy for object names in the destination database during migration or synchronization.	Case sensitivity policy for the names of objects in the destination database
	When an Online DDL operation is performed on the source via Data Management (DMS), you can choose whether to migrate or synchronize the resulting temporary tables in the DTS console.	Configure a synchronization task (Legacy Console) Configure a migration task (Legacy Console)