You can use Data Transmission Service (DTS) to synchronize data between data sources in real time. This feature is suitable for the following scenarios: active geo-redundancy, geo-disaster recovery, zone-disaster recovery, cross-border data synchronization, cloud BI systems, and real-time data warehousing. This topic describes the database types, synchronization types, and synchronization topologies that are supported by DTS.

Note
  • The DTS console is upgraded. We recommend that you use the new DTS console because the configuration process is optimized and more data synchronization scenarios are supported.
  • In some scenarios, data synchronization can implement part of data migration features and can provide better network stability and additional features. For more information about the differences between the two features, see the "What are the differences between incremental data migration and data synchronization?" section of the FAQ topic.
  • DTS can read the instances that are created in an ApsaraDB MyBase dedicated cluster. The topics listed in the following table are also suitable for synchronization scenarios of ApsaraDB MyBase dedicated clusters. For example, you can synchronize data from a self-managed MySQL database to an ApsaraDB MyBase for MySQL instance.

Synchronization types

Synchronization type Description
Schema synchronization

DTS synchronizes the schemas of required objects from the source database to the destination database. Tables, views, triggers, and stored procedures can be synchronized.

Note Before you configure a data synchronization task, check whether schema synchronization is supported. If schema synchronization is not supported, you must create a destination database and tables based on the schemas of required objects in the source database.
Full data synchronization

DTS synchronizes the historical data of required objects from the source database to the destination database. Historical data is the basis for subsequent incremental synchronization.

To simplify data synchronization, we recommend that you select both Schema Synchronization and Full Data Synchronization when you configure a data synchronization task.

Incremental data synchronization Incremental data synchronization is supported by default. DTS synchronizes incremental data generated in the source database to the destination database in real time.

Synchronization topologies

For more information, see Synchronization topologies.

Overview of data synchronization scenarios

DTS supports the following data synchronization scenarios. Select a data synchronization solution based on your actual scenario to view the supported database versions, synchronization types, and configuration procedure.

Note

Databases in this topic, such as a self-managed MySQL or Redis database, can be one of the following types:

  • Self-managed database hosted on Elastic Compute Service (ECS)
  • Self-managed database connected over Express Connect, VPN Gateway, or Smart Access Gateway
  • Self-managed database without a public IP address or port number (connected over Database Gateway)
  • Self-managed database connected over Cloud Enterprise Network (CEN)

Synchronize data from a self-managed MySQL database or an ApsaraDB RDS for MySQL instance

Source database Destination database Synchronization type Synchronization topology References
  • Self-managed MySQL database

    Version 5.1, 5.5, 5.6, 5.7, or 8.0

  • ApsaraDB RDS for MySQL instance

    All versions
  • Self-managed MySQL database

    Version 5.1, 5.5, 5.6, 5.7, or 8.0

  • ApsaraDB RDS for MySQL instance

    All versions

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization

Two-way synchronization
PolarDB for MySQL cluster

All versions

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization

Two-way synchronization

 Synchronize data from an ApsaraDB RDS for MySQL instance to a PolarDB for MySQL cluster
Oracle database (RAC or non-RAC architecture)

Version 9i, 10g, 11g, 12c, 18c, or 19c

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Available soon
PolarDB-X 1.0 or PolarDB-X 2.0 instance

Full data synchronization

Incremental data synchronization

Note For a data synchronization task that has a PolarDB-X 2.0 instance configured as the destination instance, schema synchronization and schema initialization are supported. However, they are not supported for PolarDB-X 1.0 instances.
One-way synchronization Synchronize data from an ApsaraDB RDS for MySQL instance to a PolarDB-X 2.0 instance

AnalyticDB for MySQL cluster

Version 2.0 or 3.0

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from an ApsaraDB RDS for MySQL instance to an AnalyticDB for MySQL V3.0 cluster

Synchronize data from an ApsaraDB RDS for MySQL instance to an AnalyticDB for MySQL cluster
  • Self-managed PostgreSQL database

    Version 9.5.x, 9.6.x, 10.x, 11.x, 12.x, or 13.x

  • ApsaraDB RDS for PostgreSQL instance

    Version 9.4, 10, 11, 12, or 13

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Available soon

AnalyticDB for PostgreSQL instance

Version 4.3 or 6.0

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from an ApsaraDB RDS for MySQL instance to an AnalyticDB for PostgreSQL instance

Synchronize data from a self-managed MySQL database hosted on ECS to an AnalyticDB for PostgreSQL instance

Synchronize data from a self-managed MySQL database connected over Express Connect, VPN Gateway, or Smart Access Gateway to an AnalyticDB for PostgreSQL instance

Message Queue for Apache Kafka instance

Version 0.10.1.0 to 2.x

Self-managed Kafka cluster

Version 0.10.1.0 to 2.7.0

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization

DataHub project

Schema synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from an ApsaraDB RDS for MySQL instance to a DataHub instance

Elasticsearch cluster

Version 5.5, 5.6, 6.3, 6.7, 7.4, or 7.10

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from a self-managed MySQL database hosted on ECS to an Elasticsearch cluster

MaxCompute project

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from an ApsaraDB RDS for MySQL instance to a MaxCompute project
ApsaraDB for ClickHouse cluster

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization

N/A
Tablestore instance

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from an ApsaraDB RDS for MySQL instance to a Tablestore instance

Synchronize data from a PolarDB for MySQL cluster

Source database Destination database Synchronization type Synchronization topology References

PolarDB for MySQL cluster

All versions

PolarDB for MySQL cluster

All versions

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization

Two-way synchronization

 Synchronize data between PolarDB for MySQL clusters
  • Self-managed MySQL database

    Version 5.1, 5.5, 5.6, 5.7, or 8.0

  • ApsaraDB RDS for MySQL instance

    All versions

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization

Two-way synchronization

 Synchronize data from a PolarDB for MySQL cluster to an ApsaraDB RDS for MySQL instance
PolarDB-X 1.0 or PolarDB-X 2.0 instance
Note
  • A database in a PolarDB-X 1.0 instance must be created based on one or more ApsaraDB RDS for MySQL instances. DTS does not support PolarDB-X 1.0 databases that are created based on PolarDB for MySQL clusters.
  • A database in a PolarDB-X 2.0 instance must be compatible with MySQL 5.7. We recommend that you update the instance to version 5.4.11 or later. For more information about how to update the version of an instance, see View and update the version of an instance..

Full data synchronization

Incremental data synchronization

Note For a data synchronization task that has a PolarDB-X 2.0 instance configured as the destination instance, schema synchronization and schema initialization are supported. However, they are not supported for PolarDB-X 1.0 instances.
One-way synchronization

AnalyticDB for MySQL cluster

Version 2.0 or 3.0

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization

AnalyticDB for PostgreSQL instance

Version 4.3 or 6.0

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from a PolarDB for MySQL cluster to an AnalyticDB for PostgreSQL instance

Message Queue for Apache Kafka instance

Version 0.10.1.0 to 2.x

Self-managed Kafka cluster

Version 0.10.1.0 to 2.7.0

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from a PolarDB for MySQL cluster to a self-managed Kafka cluster

DataHub project

Schema synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from an Apsara PolarDB for MySQL cluster to a DataHub instance

Elasticsearch cluster

Version 5.5, 6.3, 6.7, 7.4, or 7.10

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from a PolarDB for MySQL cluster to an Elasticsearch cluster

MaxCompute project

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Available soon
Oracle database (RAC or non-RAC architecture)

Version 9i, 10g, 11g, 12c, 18c, or 19c

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Available soon

Migrate data from a PolarDB for PostgreSQL cluster

Source database Destination database Synchronization type Synchronization topology References

PolarDB for PostgreSQL cluster

Version 11
  • Self-managed PostgreSQL database

    Version 9.5.x, 9.6.x, 10.x, 11.x, 12.x, or 13.x

  • ApsaraDB RDS for PostgreSQL instance

    Version 9.4, 10, 11, 12, or 13

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Available soon

Synchronize data from a PolarDB-X instance

Source database Destination database Synchronization type Synchronization topology References
PolarDB-X 1.0 instance
Note A database in a PolarDB-X 1.0 instance must be created based on one or more ApsaraDB RDS for MySQL instances. DTS does not support PolarDB-X 1.0 databases that are created based on PolarDB for MySQL clusters.
PolarDB-X 1.0 instance
Note
  • A database in a PolarDB-X 1.0 instance must be created based on one or more ApsaraDB RDS for MySQL instances. DTS does not support PolarDB-X 1.0 databases that are created based on PolarDB for MySQL clusters.

Full data synchronization

Incremental data synchronization

Note For a data synchronization task that has a PolarDB-X 1.0 instance configured as the destination instance, schema synchronization and schema initialization are not supported.
One-way synchronization Synchronize data between PolarDB-X 1.0 instances
  • Self-managed MySQL database

    Version 5.1, 5.5, 5.6, 5.7, or 8.0

  • ApsaraDB RDS for MySQL instance

    All versions

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from a PolarDB-X 1.0 instance to an ApsaraDB RDS for MySQL instance

PolarDB for MySQL cluster

All versions

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from a PolarDB-X 1.0 instance to a PolarDB for MySQL cluster

AnalyticDB for MySQL cluster

Version 3.0

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Available soon

DataHub project

Schema synchronization

Incremental data synchronization

 One-way synchronization Available soon
PolarDB-X 2.0 instance
Note A database in a PolarDB-X 2.0 instance must be compatible with MySQL 5.7. We recommend that you update the instance to version 5.4.11 or later. For more information about how to update the version of an instance, see View and update the version of an instance..
PolarDB-X 2.0 instance
Note A database in a PolarDB-X 2.0 instance must be compatible with MySQL 5.7. We recommend that you update the instance to version 5.4.11 or later. For more information about how to update the version of an instance, see View and update the version of an instance..

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data between PolarDB-X 2.0 instances
  • Self-managed MySQL database

    Version 5.1, 5.5, 5.6, 5.7, or 8.0

  • ApsaraDB RDS for MySQL instance

    All versions

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from a PolarDB-X 2.0 instance to an ApsaraDB RDS for MySQL instance

PolarDB for MySQL cluster

All versions

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from a PolarDB-X 2.0 instance to a PolarDB for MySQL cluster

AnalyticDB for MySQL cluster

Version 3.0

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from a PolarDB-X 2.0 instance to an AnalyticDB for MySQL V3.0 cluster

Message Queue for Apache Kafka instance

Version 0.10.1.0 to 2.x

Self-managed Kafka cluster

Version 0.10.1.0 to 2.7.0

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from a PolarDB-X 2.0 instance to a Message Queue for Apache Kafka instance

DataHub project

Schema synchronization

Incremental data synchronization

 One-way synchronization Available soon
MaxCompute project

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Available soon

Elasticsearch cluster

Version 5.5, 5.6, 6.3, 6.7, 7.4, or 7.10

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from a PolarDB-X 2.0 instance to an Elasticsearch cluster

Synchronize data from a PolarDB for Oracle cluster

Source database Destination database Synchronization type Synchronization topology References

PolarDB for Oracle cluster

All versions

PolarDB for Oracle cluster

All versions

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Configure one-way data synchronization between PolarDB for Oracle clusters

Message Queue for Apache Kafka instance

Version 0.10.1.0 to 2.x

Self-managed Kafka cluster

Version 0.10.1.0 to 2.7.0

Incremental data synchronization

 One-way synchronization Synchronize data from a PolarDB for Oracle cluster to a self-managed Kafka cluster

Synchronize data from an Oracle database

Note You can configure a data migration task for this scenario only in the new DTS console.
Source database Destination database Synchronization type Synchronization topology References

Self-managed Oracle database (RAC or non-RAC architecture)

Version 9i, 10g, 11g, 12c, 18c, or 19c

AnalyticDB for PostgreSQL instance

Version 4.3 or 6.0

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from a self-managed Oracle database to an AnalyticDB for PostgreSQL instance

DataHub project

Schema synchronization

Incremental data synchronization

 One-way synchronization Available soon
PolarDB-X 2.0 instance
Note A database in a PolarDB-X 2.0 instance must be compatible with MySQL 5.7. We recommend that you update the instance to version 5.4.11 or later. For more information about how to update the version of an instance, see View and update the version of an instance..

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Available soon

Message Queue for Apache Kafka instance

Version 0.10.1.0 to 2.x

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from a self-managed Oracle database to a Message Queue for Apache Kafka instance

Synchronize data from a self-managed PostgreSQL database or an ApsaraDB RDS for PostgreSQL instance

Source database Destination database Synchronization type Synchronization topology References
  • Self-managed PostgreSQL database

    Version 9.5.x, 9.6.x, 10.x, 11.x, 12.x, or 13.x

  • ApsaraDB RDS for PostgreSQL instance

    Version 9.4, 10, 11, 12, or 13
  • Self-managed PostgreSQL database

    Version 9.5.x, 9.6.x, 10.x, 11.x, 12.x, or 13.x

  • ApsaraDB RDS for PostgreSQL instance

    Version 9.4, 10, 11, 12, or 13

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization

Two-way synchronization

PolarDB for PostgreSQL cluster

Version 11

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Available soon

AnalyticDB for PostgreSQL instance

Version 4.3 or 6.0

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization
  • Self-managed MySQL database

    Version 5.1, 5.5, 5.6, 5.7, or 8.0

  • ApsaraDB RDS for MySQL instance

    All versions

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from an ApsaraDB RDS for PostgreSQL instance to an ApsaraDB RDS for MySQL instance

Synchronize data from a self-managed SQL Server database or an ApsaraDB RDS for SQL Server instance

Source database Destination database Synchronization type Synchronization topology References
  • Self-managed SQL Server database
    2008 Version 2008 R2, 2012, 2014, 2016, 2017, or 2019
    Note

    The self-managed SQL Server database must be of the Enterprise, Developer, or Enterprise Evaluation edition.

  • ApsaraDB RDS for SQL Server instance

    Version 2012, 2014, 2016, 2017, or 2019
  • Self-managed SQL Server database

    2008 Version 2008 R2, 2012, 2014, 2016, 2017, or 2019

    The self-managed SQL Server database must be of the Enterprise, Developer, Enterprise Evaluation, or Standard edition.

    Note

    The self-managed SQL Server database must be of the Enterprise, Developer, Enterprise Evaluation, or Standard edition.

  • ApsaraDB RDS for SQL Server instance

    2008 Version 2008 R2, 2012, 2014, 2016, 2017, or 2019

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data between ApsaraDB RDS for SQL Server instances
  • Self-managed MySQL database

    Version 5.1, 5.5, 5.6, 5.7, or 8.0

  • ApsaraDB RDS for MySQL instance

    All versions

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from an ApsaraDB RDS for SQL Server instance to an ApsaraDB RDS for MySQL instance

PolarDB for MySQL cluster

All versions

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from a self-managed SQL Server database to a PolarDB for MySQL cluster
AnalyticDB for MySQL cluster

Version 3.0

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from an ApsaraDB RDS for SQL Server instance to an AnalyticDB for MySQL V3.0 cluster

AnalyticDB for PostgreSQL instance

Version 4.3 or 6.0

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from a self-managed SQL Server database to an AnalyticDB for PostgreSQL instance

DataHub project

Schema synchronization

Incremental data synchronization

 One-way synchronization Available soon

Synchronize data from a self-managed MongoDB database or an ApsaraDB for MongoDB instance

Source database Destination database Synchronization type Synchronization topology References
  • Self-managed MongoDB database (replica set architecture)

    Versions 2.8 to 4.4

  • ApsaraDB for MongoDB instance (replica set architecture)

    Version 3.4, 4.0, 4.2, or 4.4
  • Self-managed MongoDB database (replica set or sharded cluster architecture)

    Versions 2.8 to 4.4

  • ApsaraDB for MongoDB instance (replica set or sharded cluster architecture)

    Version 3.4, 4.0, 4.2, or 4.4

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from an ApsaraDB for MongoDB instance (replica set architecture) to another ApsaraDB for MongoDB instance (replica set architecture or sharded cluster architecture)
ApsaraDB for MongoDB instance (sharded cluster architecture)

Version 3.4, 4.0, 4.2, or 4.4

 ApsaraDB for MongoDB instance (sharded cluster architecture)

Version 3.4, 4.0, 4.2, or 4.4

Schema synchronization

Full data synchronization

Incremental data synchronization

Two-way synchronization

 Configure two-way data synchronization between ApsaraDB for MongoDB instances (sharded cluster architecture)

Synchronize data from a self-managed Redis database or an ApsaraDB for Redis instance

Note
  • Redis is a NoSQL database that does not require schema synchronization.
  • When the source and destination instances are ApsaraDB for Redis instances, DTS supports instances that use a master-replica architecture and cloud disks but not instances that use a cluster architecture and cloud disks.
  • In this scenario, a two-way data synchronization task supports only ApsaraDB for Redis Enhanced Edition (Tair 5.0) instances.
  • If the source database is a self-managed Redis instance or an ApsaraDB for Redis Community Edition instance, full data synchronization and incremental data synchronization are supported and displayed as incremental data synchronization.
Source database Destination database Synchronization type Synchronization topology References
  • Self-managed Redis database (standalone or cluster architecture)

    Version 2.8, 3.0, 3.2, 4.0, 5.0, or 6.0

  • ApsaraDB for Redis Community Edition instance (cluster, standard master-replica, or read/write splitting architecture)

    Version 4.0, 5.0, or 6.0

  • ApsaraDB for Redis Enhanced Edition instance (cluster, standard master-replica, or read/write splitting architecture)

    Version 5.0
  • Self-managed Redis database (standalone or cluster architecture)

    Version 2.8, 3.0, 3.2, 4.0, 5.0, or 6.0

  • ApsaraDB for Redis Community Edition instance (cluster, standard master-replica, or read/write splitting architecture)

    Version 4.0, 5.0, or 6.0

  • ApsaraDB for Redis Enhanced Edition instance (cluster, standard master-replica, or read/write splitting architecture)

    Version 5.0

Full data synchronization

Incremental data synchronization

One-way synchronization

Two-way synchronization

Synchronize data from a TiDB database

Source database Destination database Synchronization type Synchronization topology References
TiDB database AnalyticDB for MySQL cluster

Version 2.0 or 3.0

Schema synchronization

Full data synchronization

Incremental data synchronization

One-way synchronization

 Synchronize data from a self-managed TiDB database to an AnalyticDB for MySQL cluster

Synchronize data from a Db2 for LUW database

Source database Destination database Synchronization type Synchronization topology References
Db2 for LUW database

Version 9.5, 9.7, 10.1, 10.5, 11.1, or 11.5
  • Self-managed MySQL database

    Version 5.1, 5.5, 5.6, 5.7, or 8.0

  • ApsaraDB RDS for MySQL instance

    All versions

Schema synchronization

Full data synchronization

Incremental data synchronization

One-way synchronization

 Available soon

AnalyticDB for MySQL cluster

Version 3.0

Schema synchronization

Full data synchronization

Incremental data synchronization

One-way synchronization

 Available soon

PolarDB for MySQL cluster

All versions

Schema synchronization

Full data synchronization

Incremental data synchronization

One-way synchronization

 Available soon
PolarDB-X 2.0 instance
Note A database in a PolarDB-X 2.0 instance must be compatible with MySQL 5.7. We recommend that you update the instance to version 5.4.11 or later. For more information about how to update the version of an instance, see View and update the version of an instance..

Schema synchronization

Full data synchronization

Incremental data synchronization

One-way synchronization

 Synchronize data from a Db2 for LUW database to a PolarDB-X 2.0 instance

AnalyticDB for PostgreSQL instance

Version 4.3 or 6.0

Schema synchronization

Full data synchronization

Incremental data synchronization

One-way synchronization

 Available soon

Message Queue for Apache Kafka instance

Version 0.10.1.0 to 2.x

Self-managed Kafka cluster

Version 0.10.1.0 to 2.7.0

Schema synchronization

Full data synchronization

Incremental data synchronization

One-way synchronization

 Available soon

Synchronize data from a Db2 for i database

Source database Destination database Synchronization type Synchronization topology References
Db2 for i database

Version 7.3 or 7.4
  • Self-managed MySQL database

    Version 5.1, 5.5, 5.6, 5.7, or 8.0

  • ApsaraDB RDS for MySQL instance

    All versions

Schema synchronization

Full data synchronization

Incremental data synchronization

One-way synchronization

 Available soon

Synchronize data from a DMS logical database

Source database Destination database Synchronization type Synchronization topology References
DMS logical database
Note A logical database in Data Management (DMS) must be created based on the database shards of multiple PolarDB for MySQL clusters.

AnalyticDB for MySQL cluster

Version 3.0

Schema synchronization

Full data synchronization

Incremental data synchronization

 One-way synchronization Synchronize data from a DMS logical database to an AnalyticDB for MySQL V3.0 cluster