Oracle Health FHIR APIs with Bulk Data Access now support the Patient Export endpoint [fhir base]/Patient/$export which provides the ability to export patient data without having a group created. The functionality is available for use in our developer sandbox.
Oracle Health's implementation of the Patient Export does not support an 'all patients' export. The patient parameter is required to kick off an export for a list of patient IDs.
For further documentation review the API documentation found on Oracle Help Center https://docs.oracle.com/en/industries/health/millennium-platform-apis/mfrap/bulk_data_access.html
This functionality is available to a limited number of customers but may be generally available at a later date.