ORA-31068: updateXML expected data format [string] instead of [string]
Cause: An attempt was made to use updateXML to update data with a node of the incorrect type. Text and attribute nodes must be updated with string data, whereas element nodes must be updated with XMLType data
Action: Use CREATEXML or getStringVal to coerce the new data to the proper format
https://support.oracle.com/
http://www.oracle.com/