Supported features: Most of the Compute features for VM instances are supported for instances running on dedicated virtual machine hosts. However, the following features are not supported:
Autoscaling
Capacity reservations
Instance configurations
Instance pools
Burstable instances
Reboot migration. You can use manual migration instead
https://docs.oracle.com/en-us/iaas/Content/Compute/Concepts/dedicatedvmhosts.htm#Dedicated_Virtual_Machine_Hosts

If Cloud Guard detects an issue again for:
An Open (unresolved) problem, it updates the problem history, but doesn't create a new problem.
A previously solved problem, it reopens the issue and updates the history.
A previously dismissed problem, it updates the history.
https://docs.oracle.com/en-us/iaas/cloud-guard/using/problems-page.htm

Types of Compliance Documents
When viewing compliance documents, you can filter on the following types:
Attestation. A Payment Card Industry (PCI) Data Security Standard (DSS) Attestation of Compliance document.
Audit. A general audit report.
Bridge Letter (BridgeLetter). A bridge letter. Bridge letters provide compliance information for the period of time between the end date of an SOC report and the date of the release of a new SOC report.
Certificate. A document indicating certification by a particular authority, with regard to certification requirements and examination results conforming to said requirements.
SOC3. A Service Organization Controls 3 audit report that provides information relating to a service organization's internal controls for security, availability, confidentiality, and privacy.
Other. A compliance document that doesn't fit into any of the preceding, more specific categories.
https://docs.oracle.com/en-us/iaas/Content/ComplianceDocuments/Concepts/compliancedocsoverview.htm