OceanBase Migration Service (OMS) allows you to delete data sources that you have created. This operation does not affect your database or the projects that are using the database for data migration or synchronization.
Procedure
Log on to the OMS console.
In the left-side navigation pane, click Data Source Management .
On the Data Sources page, click the More icon next to the data source that you want to delete, and then click Delete from the drop-down list.
If your business system is deployed in multiple regions, you can use the Region column to filter and delete the data sources in a specific region.

In the dialog box that appears, click Delete .