How to adjust the rate of a full migration-Data Transmission Service(DTS)-阿里云帮助中心

During a data migration, you can adjust the full migration rate based on the read and write pressure on the source and destination databases.

Feature limitations

This feature is available only for the following combinations of source and destination databases.

Note

If you modify the objects to be synchronized, the generated subtasks do not inherit the rate limiting configuration from the full migration phase of the main task.

Source database	Destination database
Self-managed MySQL RDS for MySQL	Self-managed MySQL RDS for MySQL MaxCompute
Self-managed PostgreSQL RDS for PostgreSQL	Self-managed PostgreSQL RDS for PostgreSQL
Self-managed Oracle	Self-managed Oracle Self-managed MySQL RDS for MySQL Self-managed PostgreSQL RDS for PostgreSQL PolarDB engine compatible with Oracle syntax (PolarDB O engine) AnalyticDB for MySQL (Version 3.0) AnalyticDB for PostgreSQL
PolarDB for PostgreSQL (Compatible with Oracle)	PolarDB for PostgreSQL (Compatible with Oracle)
PolarDB for MySQL	PolarDB for MySQL
Self-managed TiDB	Self-managed MySQL RDS for MySQL PolarDB for MySQL
Self-managed MongoDB ApsaraDB for MongoDB	Self-managed MongoDB ApsaraDB for MongoDB Lindorm
Tair (Redis OSS-compatible) Self-managed Redis	Tair (Redis OSS-compatible) Self-managed Redis

Procedure

Log on to the DTS console.

Note
If you are automatically redirected to the Data Management (DMS) console, you can click the icon in the lower-right corner and then click to return to the classic DTS console.
In the left-side navigation pane, click Data Migration.
At the top of the Migration Tasks page, select the region where the migration task is located.
On the Migration Tasks page, click the ID of the destination instance.
In the navigation pane on the left, click Performance Monitoring > Full Migration Performance.
In the upper-right corner of the page, click Adjust Full Migration Rate.
As required, choose whether to limit the full migration rate and adjust the related parameters.

The related parameters include Rate for querying the source database per second, Full migration rows per second (RPS), and Full migration data volume per second (MB).

Note
Click the icon to view a detailed explanation of each parameter.
Click OK.