How to fix the Oracle error ORA-38426: attribute set assigned to an expression set may not be dropped?

In this post, you’ll learn more about the Oracle ErrorORA-38426: attribute set assigned to an expression set may not be dropped with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-38426: attribute set assigned to an expression set may not be dropped

Reason for the Error ORA-38426: attribute set assigned to an expression set may not be dropped

An attempt was made to drop an attribute set when it is still associated with an expression set.

How to fix the Error ORA-38426: attribute set assigned to an expression set may not be dropped ?

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

Un-assign the attribute set from the expression set before dropping it.