How to fix the Oracle error ORA-31406: change source string is referenced by a change set?

In this post, you’ll learn more about the Oracle ErrorORA-31406: change source string is referenced by a change set with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-31406: change source string is referenced by a change set

Reason for the Error ORA-31406: change source string is referenced by a change set

The operation cannot complete because this change source is referenced by one or more change sets.

How to fix the Error ORA-31406: change source string is referenced by a change set ?

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

Drop the change sets first, then re-issue the command. May have to drop some change tables before the change sets are dropped.