How to fix the Oracle error ORA-25199: partitioning key of a index-organized table must be a subset of the primary key?

In this post, you’ll learn more about the Oracle ErrorORA-25199: partitioning key of a index-organized table must be a subset of the primary key with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-25199: partitioning key of a index-organized table must be a subset of the primary key

Reason for the Error ORA-25199: partitioning key of a index-organized table must be a subset of the primary key

An attempt to specify a partitioning key which is not a prefix of the primary key of the index-organized table

How to fix the Error ORA-25199: partitioning key of a index-organized table must be a subset of the primary key ?

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

Select a different partitioning key