Database Transmission Service
Database Transmission Service
Database Transmission Service
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Data migration
Creating a data migration task for MySQL
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MySQL connected over public network as the source
MySQL connected over express network as the source
Creating a data migration task for PostgreSQL
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PostgreSQL connected over public network as the source
PostgreSQL connected over express network as the source
Creating a data migration task for SQL Server
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SQL Server connected over public network as the source
SQL Server connected over express network as the source
Creating a data migration task for Redis
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Redis connected over public network as the source
Redis connected over express network as the source
Creating a data migration task for MongDB
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MongoDB connected over public network as the source
MongoDB connected over express network as the source
Creating a data migration task for Supabase
Supabase connected over public network as the source
Supabase connected over express network as the source
Data subscription
Creating a data subscription task for MySQL
Creating a data subscription task for PostgreSQL
Consuming subscription data
Data synchronization
Creating a data synchronization task for MySQL
Volcano Engine RDS for MySQL as the source
Volcano Engine veDB for MySQL as the source
MySQL connected over public network as the source
MySQL connected over express network as the source
Creating a data synchronization task for Redis
Volcano Engine Cache for Redis as the source
Redis connected over public network as the source
Redis connected over express network as the source
Creating a data synchronization task for PostgreSQL
Volcano Engine RDS for PostgreSQL as the source
PostgreSQL connected over public network as the source
PostgreSQL connected over express network as the source
Creating a data synchronization task for MongoDB
Volcano Engine Database for MongoDB as the source
MongoDB connected over public network as the source
MongoDB connected over express network as the source
Creating a data synchronization task for Milvus
ETL task management
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Best practices
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Data transmission
Data subscription (consumer group management)
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- Documentation
Database Transmission ServiceData migrationPausing a migration task
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Pausing a migration task
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During data migration, if you encounter peak business hours and measures such as modifying the link specification or adjusting the full migration rate still can not meet the requirements, you may choose to pause the migration task and resume it during off-peak business hours. This topic describes how to pause a migration task on the Database Transmission Service (DTS) console.
Prerequisites
A data migration task has been created, and the task status is In progress. For details about migration task status, refer to Instructions on migration task status.
Precautions
- If source and target instances are in different regions, you need to pause the task at the destination.
- After pausing, the migration status changes to “Paused”. You can continue the migration by starting the migration task. For details, refer to Starting a migration task.
- When a task is paused for more than 7 days, the task can not be resumed due to expired logs required by the source database. To avoid potential irrecoverable task issues, it is recommended that the pause duration does not exceed 24 hours.
- When a normally running migration task is paused, the current session (i.e., the database session between the DTS server and the target database) is not immediately terminated. Simultaneously, if the transactions being executed by the current session are not committed, the resources occupied by these transactions - such as row locks and table locks - will not be released. As a result, other sessions may be blocked when requesting these resources, which could potentially impact the existing performance of the database. If a task remains paused for an extended period (exceeding the inactive session timeout parameter), the session will be terminated and transactions will be rolled back. When pausing a task, it is recommended to confirm that DTS is not migrating large transactions, as this may otherwise lead to degraded database performance.
Pause a specified task
- Log in to the DTS console.
- In the upper-left corner of the top menu bar, select the project and region.
- In the left navigation bar, click Data migration.
- On the Migration task list page, select More operations > Pause in the upper-right corner of the target task in Migration task list.
- In the Pause selected migration task? dialog box, click Pause.
Batch pause tasks
- Log in to the DTS console.
- In the upper-left corner of the top menu bar, select the project and region.
- In the left navigation bar, click Data migration.
- On the Migration task list page, select the migration tasks to pause, then click Batch pause in the bottom menu bar.
- In the Pause task dialog box, click OK.
- Confirm the tasks to be paused in the Pause task dialog box. To exclude any tasks, click Remove in the Actions column to delete them.
Related APIs
API | Description |
Call the SuspendTransmissionTask API to pause the transmission task. | |
Call the SuspendTransmissionTasks API to batch pause transmission tasks. |
Last updated: 2026.02.03 16:01:45
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