How to fix the Oracle error ORA-16194: Modifying DB_UNIQUE_NAME requires SID=’*’ qualifier?

In this post, you’ll learn more about the Oracle ErrorORA-16194: Modifying DB_UNIQUE_NAME requires SID=’*’ qualifier with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-16194: Modifying DB_UNIQUE_NAME requires SID=’*’ qualifier

Reason for the Error ORA-16194: Modifying DB_UNIQUE_NAME requires SID=’*’ qualifier

The setting for the DB_UNIQUE_NAME parameter must be exactly the same on all RAC instances so the SID=’*’ qualifier is required.

How to fix the Error ORA-16194: Modifying DB_UNIQUE_NAME requires SID=’*’ qualifier ?

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

Re-enter the command using the SID=’*’ qualifier.