Database Migration Service release notes

Available in VPC

Keep track of changes to the Database Migration Service user guide. The release notes include:

New
- Initial release
Update
- Added: New features
- Changed: Feature enhancements
- Fixed: Bug fixes
- Deprecated: Feature deprecations or service shutdown
- Miscellaneous: Documentation changes

Read on for detailed descriptions of each release.

July 23, 2026

Type	Change	Go to page
Update - Changed	Expansion of the migration data capacity limit (3 TB → 6 TB)	Database Migration Service prerequisites

June 25, 2026

Type	Change	Go to page
Update - Added	Provided post-migration data consistency validation feature.	Check table status
Update - Changed	Automatically adjusted myloader options when the source DB contains 5,000 or more tables. Improved Test Connection Definer validation by excluding system accounts and schemas.	Migration Management Endpoint Management

April 23, 2026

Type	Change	Go to page
Update - Added	Added the [Skip replication errors] feature during the Replication stage.	Migration Management
Update - Changed	Allowed special character ($) in DB passwords when creating an endpoint.	Endpoint Management

January 22, 2026

Type	Change	Go to page
Update - Changed	Removed password length and special character restrictions for Source DB in Endpoint Management. Restricted point-in-time recovery for Cloud DB for MySQL to times prior to completion or abnormal termination when deleting Database Migration Service tasks. When a migration is abnormally terminated and then deleted, the Target DB Standby Master is always reinstalled. Improved migration compatibility when the Target DB is Cloud DB for MySQL 8.4.	Migration Management Endpoint Management
Update - Added	When AWS RDS/Aurora is specified as the source, a mysqldump client that accounts for permission restrictions is applied automatically.	Migration Management Endpoint Management

July 17, 2025

Type	Change	Go to page
Update - Added	Added optional features to select target DB for migration.	-

April 17, 2025

Type	Change	Go to page
Update - Changed	Displayed the backup method and the number of threads selected by the user on the console. Set the upper thread limit per server specification.	-

March 20, 2025

Type	Change	Go to page
Update - Changed	Upgraded to mydumper-0.17.2-19.	-

October 17, 2024

Type	Change	Go to page
Update - Added	Display the progress status (Preparing/Completing/Deleting) on the task detail interface.	Migration Management
Update - Changed	Upgraded to mydumper-0.16.3-6.	Migration Management

July 23, 2024

Type	Change	Go to page
Update - Miscellaneous	Provided troubleshooting guide.	Database Migration Service troubleshooting

June 20, 2024

Type	Change	Go to page
Update - Added	Introduced mydumper in a multi-threaded backup method.	Migration Management

August 22, 2023

Type	Change	Go to page
Update - Changed	Output the details of permission insufficiency notifications during test connection. Added a log_slave_updates configuration check item during test connection.	Migration Management

May 25, 2023

Type	Change	Go to page
Update - Added	Added MariaDB to MySQL migration feature. Improved collation defense logic during test connection.	Migration Management

April 20, 2023

Type	Change	Go to page
Update - Changed	Improved Test Connection error message notifications. Improved migration recovery speed. Applied innodb_doublewrite ON/OFF settings. Expanded application of innodb_flush_log_at_trx_commit setting.	Migration Management

November 22, 2022

Type	Change	Go to page
Update - Miscellaneous	Reorganized user guide composition and content.	Database Migration Service overview

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