ORA-19035: Invalid select item of the query

admin

ORA-19035: Invalidselect item of the query in newContextFromHierarchy()
Cause: The query does not have a number select item followedby an XMLType
select item only.
Action: Makesure the result set of the query used in the
newContextFromHierarchy() must have only two selected items: the first item
must be number type and the second item must be XMLType.