How to fix the Oracle error PCC-02309: illegal formal parameter declaration?

In this post, you’ll learn more about the Oracle ErrorPCC-02309: illegal formal parameter declaration with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PCC-02309: illegal formal parameter declaration

Reason for the Error PCC-02309: illegal formal parameter declaration

Cause: A formal parameter to a function was specified without giving its type.

How to fix the Error PCC-02309: illegal formal parameter declaration ?

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

Action: Rewrite the function declaration and include types of all parameters in function declarations.