How to fix the Oracle error ORA-38487: FUNCTION/PACKAGE/TYPE “string” not allowed in the expression?

In this post, you’ll learn more about the Oracle ErrorORA-38487: FUNCTION/PACKAGE/TYPE “string” not allowed in the expression with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-38487: FUNCTION/PACKAGE/TYPE “string” not allowed in the expression

Reason for the Error ORA-38487: FUNCTION/PACKAGE/TYPE “string” not allowed in the expression

An attempt was made to use an un-approved function in the expression.

How to fix the Error ORA-38487: FUNCTION/PACKAGE/TYPE “string” not allowed in the expression ?

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

Add the function to the corresponding attribute set