How to Remove a System From ULN

Unregistering a system from ULN removes the system from automatically receiving package updates.

The system must be registered to the username with which you connect to ULN. Otherwise, you can not complete this task.
  1. Sign in to https://linux.oracle.com with valid SSO credentials.
  2. On the Systems tab, select the link named for the system in the list of registered machines.
  3. On the System Details page, select Delete.
  4. To confirm the deletion, select OK.
  5. Disable the system's automatic updates from ULN.

    Edit the /etc/dnf/plugins/spacewalk.conf file by changing the value of enabled option to 0 as shown: 

    [main]
enabled = 0
gpgcheck = 1
timeout = 120
  6. Subscribe the system to the appropriate yum repositories on the Oracle Linux yum server or an appropriate mirror to receive software updates for bug fixes and security patches.