How to fix the Oracle error ORA-02455: The number of cluster key column must be 1?

In this post, you’ll learn more about the Oracle ErrorORA-02455: The number of cluster key column must be 1 with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-02455: The number of cluster key column must be 1

Reason for the Error ORA-02455: The number of cluster key column must be 1

When specifing the HASH IS option, the number of key columns must be 1.

How to fix the Error ORA-02455: The number of cluster key column must be 1 ?

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

Either do not specify the HASH IS option or reduce the number of key columns.