How to fix the Oracle error ORA-16603: Data Guard broker detected a mismatch in configuration ID?

In this post, you’ll learn more about the Oracle ErrorORA-16603: Data Guard broker detected a mismatch in configuration ID with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-16603: Data Guard broker detected a mismatch in configuration ID

Reason for the Error ORA-16603: Data Guard broker detected a mismatch in configuration ID

There was a mismatch in configuration unique ID. This could occur if the original configuration was re-created while this database was disconnected from the network or the same database was added to two different Data Guard broker configurations.

How to fix the Error ORA-16603: Data Guard broker detected a mismatch in configuration ID ?

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

Make sure the database belongs to only one broker configuration. Shut down the broker by setting the DG_BROKER_START initialization parameter to false. Then remove the Data Guard broker configuration files. Finally restart the broker by setting the DG_BROKER_START initialization parameter to true.