How to fix the Oracle error ORA-30397: multiple JOIN KEY clauses specified for the same child level?

In this post, you’ll learn more about the Oracle ErrorORA-30397: multiple JOIN KEY clauses specified for the same child level with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-30397: multiple JOIN KEY clauses specified for the same child level

Reason for the Error ORA-30397: multiple JOIN KEY clauses specified for the same child level

Multiple JOIN KEY clauses were specified for a given child level in a dimension hierarchy.

How to fix the Error ORA-30397: multiple JOIN KEY clauses specified for the same child level ?

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

Eliminate the redundant JOIN KEY clauses.