ORA-64428
Cannot evolve element or attribute 'name' to 'new_type' which is not a superset of 'old_type'.
- name: The name of the declared element or attribute.
- new_type: The target type for the evolving element or attribute.
- old_type: The declared type of the evolving element or attribute.
Cause
An attempt was made to make an XML schema change that was not permitted through in-place XML schema evolution.
Action
Ensure that the XML schema changes specified in the XMLDiff argument to DBMS_XMLSCHEMA.inPlaceEvolve are permitted.