How to fix the Oracle error ORA-30737: cannot create subtable of a type which is not a subtype of the type of the supertable?

In this post, you’ll learn more about the Oracle ErrorORA-30737: cannot create subtable of a type which is not a subtype of the type of the supertable with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-30737: cannot create subtable of a type which is not a subtype of the type of the supertable

Reason for the Error ORA-30737: cannot create subtable of a type which is not a subtype of the type of the supertable

An attempt was made to create a subtable(subview) of a type which is not a subtype of the type of the super object.

How to fix the Error ORA-30737: cannot create subtable of a type which is not a subtype of the type of the supertable ?

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

Change the type of the subtable to be a subtype of the superobject’s type and then retry the operation.