On April 23, 2025, OS Management reaches end of life (EOL). Effective now, the service is no longer available to you in regions where you are not already using OS Management, or to new users with new tenancies. Before the EOL date, we recommend that you migrate your managed instances to the OS Management Hub service. If you are an Oracle Autonomous Linux user, see Important Maintenance Event. For more information, see the Service Change Announcement.

Oracle Cloud Infrastructure Documentation

Resolving Incompatible Vendor Software Sources

Older versions of the migration assistant might be incompatible with vendor software sources in the latest release of the OS Management Hub service.

Could not find vendor software sources

When discovering or creating vendor software sources, the migration assistant reports:

Incompatible Software Sources

ISSUE:   Could not find the following vendor software sources in OSMH:

          Oracle Linux 9 BaseOS Latest  (x86_64)
          Oracle Linux 8 EPEL Packages for Development (x86_64)
          Oracle Software for OCI users on Oracle Linux 9 (x86_64)
          Oracle Linux 8 Add ons (aarch64)
...
         Refer to the migration guide for details.

To resolve this issue:

Follow Accessing the Migration Assistant to update to the newest version of the migration assistant.