can dbms_xmlgen context span connections?

 Hi, I'm investigating the use of dbms_xmlgen as a means of serving xml content to a website. The question is this - is there a way for the context handle (from dbms_xmlgen.newcontext) to be used in subsequent calls from a sessionless web page. The SQL query is long and potentially slow to evaluate and passing in an existing context handle obviously eliminates that expense. I realize this will consume additional resources in the database.

Thanks.

Jeff