In this post, you’ll learn more about the Oracle ErrorORA-16778: redo transport error for one or more databases with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-16778: redo transport error for one or more databases
Reason for the Error ORA-16778: redo transport error for one or more databases
The redo transport service was unable to send redo data to one or more standby databases.
How to fix the Error ORA-16778: redo transport error for one or more databases ?
You can fix this error in Oracle by following the below steps
Check the Data Guard broker log and Oracle alert log for more details. Query the LogXptStatus property to see the errors.