nested XML structure from Oracle

Using the SQL Adapter, calling a SQL Stored procedure on a MS SQL DB, I can get a nice nested XML structure using JOIN and FOR XML AUTO, like this

<pcode="DK003">

 <iistamp="2013-01-14T10:27:38.790"value="180.702052"price="184.000000">

   <dDividend="2.50"DividendDate="2012-03-29T00:00:00" />

 </ii>

 <iistamp="2013-01-14T10:27:38.790"value="181.702052"price="14.000000">

   <dDividend="2.50"DividendDate="2012-03-29T00:00:00" />

 </ii>

</p>

How can I get the same on Oracle using the WCF-Custom Adapter ??