5.10 Database installation and operation fails if RemoveIPC=yes is configured for systemd

If RemoveIPC=yes is configured for systemd, interprocess communication (IPC) is terminated for a non-system user's processes when that user logs out. This setting, which is intended for use on laptop systems, can cause software problems on server systems. For example, if the user is a database software owner such as oracle for Oracle Database, this configuration can cause a database installation to fail or database services to crash.

By default, Oracle Linux 7 Update 7 configures RemoveIPC=no in /etc/systemd/logind.conf to prevent systemd from terminating IPC. However, if you have touched this file before updating your system to Oracle Linux 7 Update 6, the update installs the new version of the file as /etc/systemd/logind.conf.rpmnew and does not set RemoveIPC=no in /etc/systemd/logind.conf. To avoid database crashes, set RemoveIPC=no in /etc/systemd/logind.conf and run the systemctl reboot command to reboot the system. (Bug ID 22224874)