Suppress default namespace in extract() function

Question

How can I avoid that Oracle includes the target namespace of my schema as the default namespace when using the EXTRACT function?
E.g., select xmlelement("XmlData",
xmlagg(extract(tx.transmission, '/Transmission/Item')))
from transmissions tx
returns something like
<XmlData>
<Item xmlns="http://myschematargetnamespace" N="1">abcdef</Item>
<Item xmlns="http://myschematargetnamespace" N="2">abcdef</Item>
</XmlData>
Any ideas will be appreciated very much!
P.S. Can anybody tell me how I configure sqlplus to display the complete XML instead of only two lines?

Answer 1

Jash
I'm not aware of the answer, not would it make sense to do. element x in the noNamespaceNamespace is not the same object as element x in a specified namespace. Techinically there is no correct way to move the element from some specific namespace to the noNamespaceNamespace. You would have to construct a new element in the noNamespaceNamespace from scratch.