On 5/2/2012 12:34 PM, Pid * wrote:
It's an OS issue: google 'ulimit'. p
Yes, I am familiar with ulimit -Sn (it's 1024), but I suspect this could be a Tomcat issue somehow opening too many files and/or not releasing them. I had never seen this issue before we upgraded from Tomcat 5.5 (all using BIO) to Tomcat 7.0 (all using NIO). We run on lots of servers, and none have shown this error before (and they are all Linux servers all set to 1024 for open files). But we will give it a try by setting to a higher number.
The reason we suspect it's Tomcat is that we're getting other exceptions, too, those that indicate our session/request objects are not valid when our JSPs are running (and of course work fine when the loads are normal, but start to fail when we push lots of concurrent requests at Tomcat).
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