…_files_limit set to 40000? 2) Could you explain the difference between MyISAM and InnoDB and the difference in how the OS handles opened files? 3) Would converting the MyISAM tables to InnoDB fix or help the os ulimit max… version: 5.0.79-enterprise-log MySQL Enterprise Server (Commercial) my.cnf: [mysqld] server-id = 2 port = 3306 basedir = /usr/local/mysql…