PLS-00153

Error: PLS-00153: A string type may only be used as an object type attribute.

Causa: A POINTER or [SIGNED/UNSIGNED] BINARY INTEGER can only be used as attributes of object types. These types can only be referenced in CREATE TYPE statements, and are non-queryable data types. One of these external PL/SQL types outside of an object type.

Acción: Use a different type and retry the operation.