Possible Duplicate:
maximum length of HTTP GET request?
I have an ajax request using GET method.
on one server (apache) the GET request can handle >512 characters, but on another server 512 is the limit.
I am using the same browser.
... by the way if I do the ajax request using post instead, no problems.
EDIT
www.w3.org ... 10.4.15 414 Request-URI Too Long
The server is refusing to service the request because the Request-URI is longer than the server is willing to interpret. This rare condition is only likely to occur when a client has improperly converted a POST request to a GET request with long query information, when the client has descended into a URI "black hole" of redirection (e.g., a redirected URI prefix that points to a suffix of itself), or when the server is under attack by a client attempting to exploit security holes present in some servers using fixed-length buffers for reading or manipulating the Request-URI.