Error Loading Jsp Page

[softlab]

Hi, I'm softlab on Johnny, my site is infopar.heliohost.org/webCat. I have a problem when I try to load the site: very often I get this message:

 

 

Proxy Error

 

The proxy server received an invalid response from an upstream server.

The proxy server could not handle the request GET /webCat/.

 

Reason: Error reading from remote server

 

 

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

 

 

If I try to reload the site, after several attempts finally the site loads; but, every button I click on the site, the same problem happens, and only after several other attemps I succeed. And so on.

 

In the error log in my cPanel there is no more information, only a reference to a 404 error as said in the error message.

 

Can you help me?

 

Thank you

[softlab]

I,ve posted this just 10 days ago, can anyone help me?

[Krydos]

What is the server load like when it gives you a proxy error? I wonder if high load, which can be rather common on Johnny, causes the proxy connection to timeout resulting in that error?

[softlab]

Sorry for my late answering, but I was out.

 

The problems happens on loading almost every page of the site. The first one looks for a session variable: if it is not present, the output is redirected on a login page; otherwise (i.e., the user is just logged in) the index.jsp page is shown, with the complete menu.

 

I don't think this can overload by itself the server; could perhaps the concurrency with other requests of other applications produce this error?

 

Thanks