what's the maximum size of post data. because i send a bunch of data, for example, from an 100*30 grid. only a maximum of 50-60 rows can be sent to my Action, above which the java stops execution at ActionServlet, throws OutOfMemoryException, and my Action never gets called. so i chose another way, formed an xml string and sent it to my struts Action. but xml parsing, i think, is a performance overhead. is there any other way by which large amount of data can be sent...Ajax? but still my primary question is what's the size of post data. very urgent, please