This link is very helpful to fix solr- Too many open files error. http://ithubinfo.blogspot.com/2013/07/how-to-increase-ulimit-open-file-and.html#chitika_close_button Max Number of ulimit open file : It''s provide open file resource availability in linux Increase max number of ulimit open file in Linux. 1- Step : open the sysctl.conf and add this line fs.file-max = 65536 vi /etc/sysctl.conf add end of line fs.file-max = 65536 save and exit. 2. Step : vi /etc/security/limits.conf and add below the mentioned * soft nproc 65535 * hard nproc 65535 * soft nofile 65535 * hard nofile 65535 save and exit check max open file ulimit 3.ulimit -a core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 127358 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) unlimited open files (-n) 65535 -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/fbc4912526a42795f7ffd85a9142065e%40ruby-forum.com. For more options, visit https://groups.google.com/groups/opt_out.