How to fix the Oracle error ORA-16856: transport lag could not be determined?

In this post, you’ll learn more about the Oracle ErrorORA-16856: transport lag could not be determined with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-16856: transport lag could not be determined

Reason for the Error ORA-16856: transport lag could not be determined

Transport lag could not be determined because there was no connectivity between the redo source and standby databases.

How to fix the Error ORA-16856: transport lag could not be determined ?

You can fix this error in Oracle by following the below steps

Ensure that there is network connectivity between the redo source and standby databases, and the redo source is working properly.