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snapshot standby sync with ADG

Is it possible to configure snapshot standby with physical standby database with below configuration:

1. Database A , it is a primary database,

2. Database B,  it is a physical standby of Database A,

3. Database C,  it is a physical standby cascade with Database B, and only sync with Database B.

4. Convert the Database B into snapshot standby, and sync with Database C.

5. After the testing , fallback the Database B back to the physical standby and sync with Database A.

6. Database C keep sync with Database B.

Thanks and Regards,

Jack M.

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