How to fix the Oracle error ORA-02472: PL/SQL functions not allowed in hash expressions?

In this post, you’ll learn more about the Oracle ErrorORA-02472: PL/SQL functions not allowed in hash expressions with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-02472: PL/SQL functions not allowed in hash expressions

Reason for the Error ORA-02472: PL/SQL functions not allowed in hash expressions

A PL/SQL function was used in the hash expression.

How to fix the Error ORA-02472: PL/SQL functions not allowed in hash expressions ?

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

Recreate the cluster and remove the PL/SQL function.