How to Use getDBTransaction() in Controller Class

I am using the below code.
     OADBTransaction tx = (OADBTransaction)getDBTransaction();
                         java.sql.Connection pConncection = tx.getJdbcConnection();
               ConcurrentRequest cr = new ConcurrentRequest(pConncection);
But receiving the below error method getDBTransaction not found in class cust.oracle.apps.pos.changeorder.webui.extendViewOrderPGCO
Should I extend AM and use this code in AM or can I use this code in extended Controller.
Thanks for your help.
HP.

OADBTransaction tx = (OADBTransaction)getDBTransaction();
java.sql.Connection pConncection = tx.getJdbcConnection();
ConcurrentRequest cr = new ConcurrentRequest(pConncection);
Connection conn = (Connection)oapagecontext.getApplicationModule(oawebbean).getOADBTransaction().getJdbcConnection();
ConcurrentRequest cr = new ConcurrentRequest(conn);http://oracleanil.blogspot.com/2009/04/itemqueryvoxml.html
Thanks
--Anil
http://oracleanil.blogspot.com

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fuzzy in simulation loop.JPG ‏52 KB

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