Proxy error on long queries

We have an F5 that sits in front of a pool of application servers running a jboss instance and app.

 

 

Persistence is done on jsessionid via iRule.

 

 

The app ultimately queries against a larger db. With the F5 in place and managing the connections, if I execute a long-running query in the application that exceeds around 20000 records, after roughly 5 minutes, I eventually get back:

 

 

Proxy Error

 

 

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

 

The proxy server could not handle the request GET /my/path/to/QueryContainer.html

 

 

Reason: Error reading from remote server.

 

 

If we remove the F5, and just point the client directly to the jboss server, no error occurs.

 

 

I've played with nearly every timeout value I could find. I'm running out ideas on what might be causing this. Please me know if you would like any additional information that I can gather (and if its suitably arcane, the method for gathering those items as well.

 

 

Much appreciated,

 

 

- Mark Breitenbach