How to fix the Oracle error ORA-30364: this level has the same set of columns as another?

In this post, you’ll learn more about the Oracle ErrorORA-30364: this level has the same set of columns as another with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-30364: this level has the same set of columns as another

Reason for the Error ORA-30364: this level has the same set of columns as another

The level definition contained the same set of columns as another level.

How to fix the Error ORA-30364: this level has the same set of columns as another ?

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

Eliminate the redundant level definition.