Linux: java.io.IOException: Too many open files

http://lj4newbies.blogspot.com/2007/04/too-many-open-files.html
http://www.karakas-online.de/forum/viewtopic.php?t=9834

1. check max file descriptor

cat /proc/sys/fs/file-max

change to higher if needed

2. add to
/etc/security/limits.conf

something like

* soft nofile 65535

* hard nofile 65535

3. log out and log back in