Oracle Unbreakable Linux Version 7.x

  1. On the Enterprise Server that is running Linux, log in as root.

  2. Using any text editor, edit the /usr/lib/sysctl.d/00-system.conf file and search for this entry:

    # semaphores: semms1 semmns semopm  semmni  Added for EOne
    kernel.sem = 1024 32000 100 142
    
    Caution: Another variant of this file, which is /etc/sysctl.conf, is used with previous releases of Linux and may be present on some versions of Oracle Unbreakable Linux 7.x. However this file will most likely be deprecated in future releases. Therefore users of Oracle Unbreakable Linux 7.x are advised to only use the /usr/lib/sysctl.d/00-system.conf file.
  3. If this entry is missing or your existing values are lower than the above, add the entry or change the values to the above.

    Note: Once you have made changes to the /usr/lib/sysctl.d/00-system.conf file, in order for the changes to take effect you must either reboot the machine or run the sysctl -p command.