How to fix the Oracle error ORA-16648: a new observer registered with identifier string?

In this post, you’ll learn more about the Oracle ErrorORA-16648: a new observer registered with identifier string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-16648: a new observer registered with identifier string

Reason for the Error ORA-16648: a new observer registered with identifier string

The observer was registered with the Data Guard broker and will begin observing the Data Guard configuration for conditions that warrant doing a fast-start failover.

How to fix the Error ORA-16648: a new observer registered with identifier string ?

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

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