Oracle Pl/SQL: Loop through XMLTYPE nodes

You can loop through the elements using EXTRACT and XMLSequence (splits the XML into distinct chunks — here users) like this:

SQL> SELECT extractvalue(column_value, '/user/name') "user"
  2    FROM TABLE(XMLSequence(XMLTYPE(
  3                 '<?xml version="1.0"?>
  4                     <users>
  5                         <user>
  6                             <name>user1</name>
  7                         </user>
  8                         <user>
  9                             <name>user2</name>
 10                         </user>
 11                         <user>
 12                             <name>user3</name>
 13                         </user>
 14                     </users>').extract('/users/user'))) t;

user
--------
user1
user2
user3