Oracle PLSQL to Generate XML Tag Using Standard Functionality

declare
l_ctx dbms_xmlquery.ctxHandle;
l_clob clob;
begin
l_ctx := dbms_xmlquery.newContext(‘select * from <TABLE_NAME>’);
dbms_lob.createtemporary(:g_clob,true,dbms_lob.session);
:g_clob := dbms_xmlquery.getXml(l_ctx);
end;