When i use the free hand polygon to determine all the features within the drawn extent i get a URI Too Large error.
I saw that the url is 11000+ characters in length. I am using a proxy to perform this query so i don't have the issue with browser url length limitation. I also tried this query on other browsers and got the same error. So this is definitely a server error.
Googling around i found that the WebServer has a directive LimitRequestLine where the default is set to 8190. I changed this value to 16130 and executed the same query, now i get "This webpage is not available".
Error 101 (net::ERR_CONNECTION_RESET): Unknown error.
But i see that if i tried the same query on the Population service which is hosted at ESRI I don't get this error (Request URI Too Large).
Please the question is regarding the ability to execute a query where the URL length is larger than 10000+ characters.