hi I have configured my jboss to use a DataSource with oracle database , (java:/oracleDS) I write this code in my jsp :
InitialContext c = new InitialContext(); DataSource ds = (DataSource)(c.lookup("java:/oracleDS"));
and this works and I can connect to oracle using this DataSource. but I havent defined anything in my web.xml in <res-ref-name>. I want to know why this works ? When I should define <res-ref-name> inside web.xml.