Hi together, We're running several instances of SOLR (3.5) on Apache Tomcat (6.0) on Ubuntu 10.xx. After adding another instance (maybe the 14th or 15th for the developers sandboxes), tomcat rise the exception "java.net.SocketException: Too many open files" .
After reading some several sites I've googled, the reason is the follow: Every Instance open the index with a couple of files. The user, that owns the process have a limit from 1024 per default. So I've tried to rise the limit via ulimit -n. Ubuntu told me, that ulimit is deprecated. After trying some hints, the following page was helpfully for me: http://www.chrissearle.org/blog/technical/increasing_max_number_open_fil es_glassfish_user_debian hth, Axel Gerke
