How to fix the Oracle error ORA-23474: definition of “string”.”string” has changed since generation of replication support?

In this post, you’ll learn more about the Oracle ErrorORA-23474: definition of “string”.”string” has changed since generation of replication support with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-23474: definition of “string”.”string” has changed since generation of replication support

Reason for the Error ORA-23474: definition of “string”.”string” has changed since generation of replication support

The current columns in the specified table and their column types do not match the columns and column types when replication support was last generated.

How to fix the Error ORA-23474: definition of “string”.”string” has changed since generation of replication support ?

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

Regenerate replication support for the affected table. All flavors that include the specified table should be checked for validity. Types for any UDT columns should also be checked for validity.