Oracle Database Enterprise 19c fails to start with error: ORA-00800: soft external error, arguments: [Set Priority Failed], [VKTM]

Solution Verified - Updated -


  • Oracle Database Enterprise 19c is not able to start and shows the message:

    ORA-00800: soft external error, arguments: [Set Priority Failed], [VKTM]
  • Oracle provides a workaround to tune the kernel parameter cpu.rt_runtime_us quantum, like in the e.g:

    echo 950000 > /sys/fs/cgroup/cpu,cpuacct/user.slice/cpu.rt_runtime_us
  • The workaround fixed the issue, but when server is rebooted the parameter is lost.

  • Any attempts to make the parameter permanent does not work, and ends with the same error ORA-00800


  • Red Hat Enterprise Linux (RHEL) 8
  • insights-client
  • Oracle Database Enterprise 19c

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