How to fix the Oracle error DRG-12408: invalid variable reference: string.string?

In this post, you’ll learn more about the Oracle ErrorDRG-12408: invalid variable reference: string.string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

DRG-12408: invalid variable reference: string.string

Reason for the Error DRG-12408: invalid variable reference: string.string

Cause: The variable referenced does not exist.

How to fix the Error DRG-12408: invalid variable reference: string.string ?

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

Action: Check the label and column name.