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Oracle VM 2.x Technical FAQ (Doc ID 467664.1)

Last updated on JULY 12, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.1 and later
Oracle VM - Version 2.1 to 2.2.2 [Release OVM21 to OVM222]
Linux x86-64
Linux x86
***Checked for relevance on 29-Nov-2010***
***Checked for relevance on 30-Jan-2013***


Purpose

This document provides quick answers to common questions about Oracle VM from technical perspective.

Questions and Answers

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In this Document
Purpose
Questions and Answers
 What happens to Oracle VM guest VMs if the host goes down? Will guests be started automatically on another host within the server pool?
 If there is only one Server Pool Master server or Utility Server in a Server Pool, what happens when one of these fails? (Single point of failure)
 How is memory allocated in Oracle VM. Is it possible to over allocate like in VMware, or should the total allocated to the guests be less than memory on host?
 Is it possible to take a backup of guest VMs while they are running?
 With paravirtualization will all guests be blocked if one guest hangs? (Lack of isolation with paravirtualization)
 Is cloning only possible with the guest shutdown?
 Is there any way to reserve resources to high priority (production) guests in one pool? (Resource management)
 Is it possible to take snapshots while quest is running? Allowing the VM to go back to this point in time?
 Can VM guest have more than one NIC in different mode (bridge & shared)?
 Does VM server (host) support iSCSI and/or utilizing NAS for guest images?
 Can VM guest be configured as PXE boot client?
 What is the difference between 32-bit and 64-bit Oracle VM Server?
 Is Failover Supported?
 Is it possible to use external storage for guest OS'es? What is supported?
 How is memory allocated / shared / coordinated among guest OSes? 
 How is CPU capacity allocated to Virtual Machines?
 Is hard partitioning (CPU pinning) available?
 Are the actual number of CPUs that are available to the VM visible from within the VM?
 Are the Grid Control agents supported in virtual machines?
 If there are more than one server in a server pool, do they have to be identical?
 If the servers are not identical would Live Migration be possible?
References

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