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Home Page ApsaraDB RDS RDS PostgreSQL Database Service Support FAQ Migration, synchronization, and subscription Cannot select an RDS read-only instance for a DTS subscription

Cannot select an RDS read-only instance for a DTS subscription

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DTS subscriptions track database changes by reading binary logs — the ordered record of every insert, update, and delete on the instance. Binary log access is disabled on RDS read-only instances, so DTS cannot use them as a subscription source.

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