Data Transmission Service (DTS)
All Products
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Product Updates
- Release notes
- [Announcement] Data written to AnalyticDB for MySQL clusters is no longer garbled as of July 15, 2021
- [Notice] DTS upgrades cluster resources as of June 11, 2021
- [Notice] Data query feature in change tracking of the new and previous versions discontinued as of March 4, 2021
- [Notice] Data subscription mode discontinued as of March 31, 2020
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Introduction
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Billing
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Quick Start
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Network Setup
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Replication Modes
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Instance Management
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Data Migration
- Supported databases and migration types
- Overview of data migration scenarios
- Data type mappings between heterogeneous databases
- Precautions and limits
- Prepare the database accounts for data migration
- Migration task management
- Precheck and troubleshooting
- Migrate data from a self-managed database to Alibaba Cloud
- Migrate data from a third-party cloud to Alibaba Cloud
- Migrate data between instances of the same Alibaba Cloud account
- Migrate data between instances of different Alibaba Cloud accounts
- Migrate data from Alibaba Cloud to a self-managed database
- Migrate data between self-managed databases
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Data Synchronization
- Database types, initial synchronization types, and synchronization topologies
- Overview of data synchronization scenarios
- Synchronization topologies
- Data type mappings for initial schema synchronization
- Precautions and limits
- Prepare the database accounts for data synchronization
- Synchronization task management
- Synchronize data between MySQL databases
- Synchronize data from a MySQL database to a different type of database
- Synchronize data to or from an Apsara PolarDB for MySQL cluster
- Synchronize data to or from a PolarDB-O cluster
- Synchronize data to or from a PolarDB-X instance
- Synchronize data between Redis databases
- Synchronize data from an ApsaraDB RDS for SQL Server instance
- Synchronize data between PostgreSQL databases
- Synchronize data from a TiDB database
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Change Tracking
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Data Integration
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RAM-based Access Control
- Authorize DTS to access Alibaba Cloud resources
- Use a system policy to authorize a RAM user to manage DTS instances
- Use a custom policy to authorize a RAM user to manage DTS instances
- Authorize a RAM user to use the DTS SDK
- Configure RAM authorization for cross-account data migration and synchronization
- Configure RAM authorization for data migration or synchronization from a user-created database in a VPC across different Alibaba Cloud accounts
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Best Practices
- Switch workloads to the destination database
- Use triggers and functions to implement incremental DDL migration for PostgreSQL databases
- Disable slow query log to improve migration performance
- Change the character set of an ApsaraDB RDS for MySQL instance
- Configure a data synchronization task for a source database that contains a trigger
- Migrate data between databases that have different names
- Disaster tolerance of data subscription SDK
- Set a cache update policy by using the change tracking feature
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SDK Reference
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Troubleshooting
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Troubleshooting
- Common error codes and troubleshooting methods
- What can I do if full data migration stops or slows down?
- How do I troubleshoot the incremental migration latency or synchronization latency of DTS?
- What do I do if a connection failure occurs when I configure a task?
- What can I do if data loss occurs in the destination database due to inconsistent case sensitivity of character sets in the source and destination databases?
- What can I do if data loss occurs in the destination database due to online DDL operations performed in a table merging task?
- What can I do if data loss occurs after I perform two-way synchronization among three instances?
- Precheck failed