Oracle VM Reviews

There are many valuable features. I'm only naming a few here.

First, it provides the enterprise-level hypervisor that supports virtual machines to run enterprise applications. It allows virtual machines to use a specific number of physical processors and cores to handle complex application. It also provides a high-available virtual infrastructure for applications as the virtual machines can be migrated or failed over to a different physical server to avoid a system down time.

Oracle VM simplifies the application deployment with a large number of predefined VM templates. Oracle has published VM templates for most Oracle products, and you can also build templates by yourself.

Oracle VM allows application users to pay for the software license by virtual CPUs instead of the physical CPU.

Oracle Enterprise Manager can manage and monitor the entire Oracle VM virtualization stack.

I am on a team that is responsible for validating and architecting Oracle VM on Dell servers and storage. For example, we helped a customer design a private cloud system based on Oracle VM, Dell's latest 13g servers and Dell flash-based storage. The private cloud system was designed to offer Database as a Service (DBaaS).

The product works well for all its intended purposes. I would prefer that Oracle provide more backup capability for the Oracle VM stack, including the applications running on virtual machines.

It would be even better if Oracle Enterprise Manager could directly manage the Oracle VM stack, without needing the Oracle VM manager sitting in middle.

I have been working on Oracle VM since 2009 when Oracle released Oracle VM release 2.1.

The product is easily to deploy and very well scalable.

It has been a good experience working with Oracle support on Oracle VM. I didn’t have too many issues with that. Once in a while, we have to log bugs or issues in Oracle Bugzilla, which is Oracle's bug tracking system for Oracle Linux and Oracle VM.

Initial setup of Oracle VM and the rest of stack was very straightforward. The steps in Oracle documentation were very easy to follow.

We implemented Oracle VM stack by ourselves. One of my words of advice is, if you need to implement complex applications such as an Oracle RAC database on an Oracle VM stack, it takes some learning curve. You need to understand both Oracle VM and Oracle RAC stack, and would need to design the special networking and shared storage that are required by Oracle RAC database. An Oracle white paper such as https://www.oracle.com/technetw... will definitely be helpful. Here are a couple of screen shots from one of our previous Oracle RAC POC projects:

Oracle Infrastructure Cloud based on Oracle VM and Oracle EM 12c

Oracle VM architecture designed for Oracle RAC database

With Oracle VM, you only pay for the software license based on the # of the virtual CPUs on which the application runs.

Oracle VM allows you to control your licensing costs for Oracle because Oracle allows hard partitioning to control the number of cores you’re licensing.

You save vast amounts of money.

It's also very robust and it allows you to better use your hardware.

I would like them to include greater flexibility. I would like them to include multitudinous users and permissions capabilities. I would like them to design the system so that it is optimized for 10GB Ethernet at a minimum as opposed to 1GB Ethernet.

Oracle VM does not have what is commonly called role-based user permissions.
Everyone logs into the management console as an ‘admin’ and has full control over everything, as opposed to VMware, where you can (for example) give a particular user control over a certain virtual machine but no others. You can even give different grades of control, so a user would be able to reboot ‘his’ virtual machine but could not add disk space to it; or a storage administrator might have the right to add and delete storage but not affect any virtual machines at all.

I had a problem with Ethernet timeouts on my 10gb Ethernet connections and when I contacted them, they informed me that they had optimized their settings and values in the operating system kernel for 1gb Ethernet as was standard at the time. They gave me a listing of changes to the operating system that might optimize it for 10gb, but that might cause problems if and when I were to upgrade the system. The Oracle VM Server is not meant to be modified by the user; it is the hypervisor, and I didn’t wish to engage in the danger of modifying my base system.

I also am skilled in VMware. VMware costs about 10 times as much but also is about 10 times more usable. If they could learn that usability that VMware has, that would be wonderful.

I have been using the product since it came out in version 3.0. We're now at version 3.4.1. In version 3.0, many portions of it were unstable, especially when upgrading. They have made great strides and now at version 3.4.1, all the bugs seem to have been worked out.

The whole point of Oracle VM is that it allows me to access modern-day computers with large number of cores and large amounts of memory. Most users are not going to run into something that it cannot handle.

I've had to use tech support quite a bit, over the many iterations of the program. In the beginning, they were not so great. Now, they've also made great strides and learned their own product.

We were previously using Oracle on HP-UX. They ceased support on HP-UX and we cut over to Linux. We needed to control our licensing costs and Oracle VM was the way to do it.

I was involved in the initial setup. It was relatively simple. There were just Linux installs.

Oracle is the only vendor that sells this. That is all there is to choose. Oracle are the only ones who can provide it.

Hire me for consulting. That's the big one.

I think the most intriguing thing about Oracle VM is it's an enterprise-grade hypervisor. So it handles all the virtualization, and it's free. You don't hear the word Oracle and Free a lot, but there's a lot of stuff at Oracle that is free and Oracle VM is one of those.

It does most everything that you need in the enterprise for a hypervisor for virtualization. I can run VMs in it, I can do farms of VMs, I can run Linux, I can run Windows, I can run Solaris, I have a lot of choices of operating systems. It does everything that you need it to do for most of your needs for hypervisor.

There's a lot of benefits with Oracle VM that I like. I've been working with 3.4.1 which just came out. I've been working that prior to release. There's some features there that they added like Live Storage Migration that is really a key feature for that enterprise ability in the environment. The other thing is how it handles what are called partitions, from a licensing aspect. When I have Oracle licensing challenges that I have with some of the other hypervisors, Oracle VM is able to be configured so I don't have those challenges.

Cloning VMs helps a ton, especially when interface into EM, so users can build their own sandbox environmentnt, complete with WebLogic AND Database

What features would I like to see in Oracle VM in future releases? I can think of a ton of them. Some of them are just coming out. Better disaster recovery, though they just introduced a new technology called Oracle VM Site Guard that's helped a lot in disaster recovery. I would like to see better integration to Oracle networking hardware, so that would be nice, the integration between the Oracle physical networking hardware, the S2 switches would be nice for that integration.

For about 5 years now

Just issues on my part

Not in newer versions, but 3.0.1 had some issues, of course that was years ago

Scalability of the solution, we use it all in our labs and we have some small production use. I also have clients that are using it, not had an issue with scaling systems very large. Getting into server individual pods or pools or servers, 16 nodes, no problem. Getting into farms running thousands of VMs, no problem at all.

Great, the few times I have needed it.

Oracle technical support for OVM is one of the strong areas I've seen from Oracle support. The support staff are fairly knowledgeable on the product. I haven't had too many issues. When I had the few cases to open up as a port issue where they weren't able to help the surprising thing though with that is I haven't had to call Oracle support a lot for the product. It's a very stable product, very robust product. The number of tickets I've had to open up with Oracle have been minimal since I've been using the product heavily now for the last five years.

I think it becomes more of a why do you use it situation. One of the things is it's a cost savings. Since Oracle VM is free and the support's free when you have Oracle hardware, you don't have to pay the expense you pay with a lot of these other hypervisor packages out there. It's an immediate cost savings out of the gate. The other times you look at what do you want to run Oracle VM is when you have performance issue. The way it works technically under the covers, the lower level of the hypervisor, the VM runs faster and I get better performance. In small environments it's nice my application runs a little faster unvirtualized. In larger environments, it's actually a bigger deal. Not only do my applications runs faster but because of the efficiency I actually have to buy less hardware.

Up and running with VMs in an afternoon. Easy!

The initial setup for Oracle VM is pretty straightforward. Installing the hypervisor on what's called an OVS, Oracle VM Server takes maybe five minutes and you're up and running. Installing the management software itself, they may take a little longer, maybe an hour for a complete install from scratch before you're up and running, and it's all web based which is really nice. You don't have to have any special clients on it. Often I'll be managing the system either from Windows or even from my iPad.

The hard partiton technology really helps with Oracle licensing. For OVM, it's free!

Yes, but non could beat Oracle VM's price!

If I have to give it a rating between one and ten I would give it a nine. The reason I would give it a nine is there is some room for improvement with some of the areas in the manager. Some of the integration to the networking layer with the Oracle products would be nice.

My recommendation to peers is if you're looking at hypervisors, have an open mind. The market's not just dominated by single hypervisor. Look at the technology out there and give it a fair evaluation of what it's capabilities are.

It reduces the licensing cost for other Oracle products, and because it's based on Xen, it has no performance problems.

We've been able to use it successfully for deployment of our online application.

It needs automatic migration that's similar to VMware vMotion. The DRS feature in VMware migrates virtual machines based on the load on the hosts. Oracle VM does not have this feature, and I don't want users complaining about the performance bottleneck due to the load on the host.

We've been using it for three years.

I deployed it within a week and didn't have any issues with it.

Thankfully, everything was stable in spite of my limited knowledge.

We had no issues scaling it for our needs.

The customer service was good.

We also use VMware products, which I personally prefer. VMware products are an administrator's dream. They have thought of everything, including DRS, HA, templates, and virtual machine deployment. It is very easy to do all these tasks.

The initial setup was a bit of both straightforward and complex, but it's easy if you know VMware.

I carried out the implementation.

It reduces the licensing cost for Oracle products, though I still prefer VMware.

Oracle VM was chosen mostly due to licensing issues and it is based on the stable KVM product of Red Hat.

VMware is the best, but for saving license costs for Oracle products, Oracle VM is good and stable.

The CPU pinning feature that allows to link a virtual CPU (VCPU) to a physical CPU core. This feature is very useful in a virtualized environment who has on premise applications licenced by restricted number of CPU cores.

As a virtualization solution, this product help us to build and deploy development environments more quickly.

Resizing of Virtual disk needs to be improved, as does hot swap for VCPU and RAM.

I've been using it for years.

There were no issues with the deployment.

We've experienced no issues with performance.

It's been able to scale for our needs.

While it is a good solution for virtualization, Oracle VM is less flexible than other market solutions like VMware.

For most customers we have is the main reason avoiding license issues with Oracle. Most customers already have VMware vSphere running. Another reason is to have the complete stack from the same vendor, if any issues occur then only vendor has to be contacted for support to help fixing the issues.

It’s helped to decrease hardware and software license costs to use Oracle VM as most of our customers are running a lot of small applications and databases. They use Oracle VM to create small VMs to install Weblogic and the Databases on seperate servers. Also, to split the OTA database and application servers from the production databases and applications. Advantage: less hardware to buy, and most software licenses are CPU based, by using hard partitioning you can save on license costs.

Backup: It's possible to clone a VM (Virtual Machine) or make a template from it, but the option to create a snapshot backup from OVM Manager is missing. This option is available in VMware vSphere If you want to make snapshots using Oracle VM then it must be done by the storage product.

Jobs, the OVM manager handles only one job at the time. For a lot of actions, for example, starting or stopping a Virtual Machine, a job is created. If I start a couple of VM's at the same time I only see one job for starting the first VM. The other five jobs are in an invisible queue, after finishing the first job the second job starts and becomes visible at that moment. What to improve: make at least visible which jobs are in the queue and make it possible to run multiple jobs at the same time.

Security: there is no role based access control available in OVM Manager, if it’s needed then you have to use Oracle Enterprise Manager with the right plugin.

I've been using it for years.

There were no issues with the deployment.

We've experienced no issues with performance.

It's been able to scale for our needs.

The product is good for the things we want to do with it, but there is room for improvement.

• Scalability
• Administering/managing
• Simplified network/storage operations.

Having these features in place, a DBA admin can easily able to build VMs, migrate on the fly, assign network ports, and segregate the networks according to levels.

It's improved our licensing. When we migrate physical servers to virtual ones, it reduces the amount of licenses needed. Not only that, Oracle Linux on Oracle VM are certified to run, also UEL is tuned to provide fast performance compare to other Linux.

There are some minor bugs with the manual admin from Hyp versus GUI Admin.

There were no issues with the deployment.

We have had no issues with the stability.

It's scaled for our needs.

I personally like working on Oracle VM rather than other virtualization, because of the simplified setup, and probably I am attached to Oracle products maybe, as being an Ex-Employee of Oracle Corp.

With Oracle VM, the most valuable feature is the virtualization of the hardware, making it easier to maintain and support than actual OS's and networks resources. 

We can run software on a host separate from other hardware resources, which is important when we need to take a snapshot and restore it later on another VM.

But it also comes down to the fact that it's a product by Oracle, the industry leader. We know we can rely on it and that it'll be supported by an established company.

The fact that it cannot do a hot snapshot is a problem for us, but we work around it. We need to have good backups, while the system is up, which don't don't right now with Oracle VM. Our workarounds are fine for now, but we'd prefer to be able to just do hot snapshots when we need to.

We've had no issues deploying it.

I think it's fine, there are no issue there. We haven't had any big issues with it being unstable.

The scalability has been there for us as well. We've been able to scale as needed.

It's implemented just fine. The setup was pretty easy and straightforward. It was a combination of an easy product to install and technical expertise as well.

We implemented it ourselves with our in-house team.

We didn't really evaluate other products because we already run a lot of other Oracle solutions. Obviously, Oracle VM is supported by Oracle, which makes things easier than if we had used, for example, vSphere or Hyper-V.

Study ahead of time so you know what you're working with. Also, plan your implementation.

Although not necessarily a feature, but rather a capability of virtualization, is the possibiltles to have high consolidation density and to take new or legacy applications and put them on high-performance computing platforms.

The primary benefit is that it reduced CapEx by getting rid of old hardware and then consolidating them on a defined set of platforms. And while it's pretty well automated and if your IT department is well-versed in virtualization technology, it can reduce OpEx as well.

I think it needs a more simplified way of provisioning external storage networks. Those areas in performance, especially triaging performance at the hypervisor layer, need some improvement.

We've had no issues with deploying it.

It's come a long way. So, by the time you get to v3.3, it's a pretty stable platform. It's much easier to use than the previous versions and I'd say it's at a good place right now.

It scales well. I think a primary use case of this would be in the private cloud appliance, a PCA, which is where it really gets leveraged.

The primary benefit I see is that most of the people who are doing support for Oracle VM come from database and virtualization backgrounds, and they sit together. If you have a problem with a database, since it's virtualized, they'll know exactly how to triage it.

It's been a struggle. Over the years, it's gotten better and better. I think what's helped tremendously is the integration of OVM with PCA, and so all the setup has really been taken out of the hands of the administrator. It's really more of a deployment thing than it is a setup thing. That's helped a lot.

We looked at quite a few vendors and we support different vendors as well, too. We're not a one-vendor shop. We use quite different vendors and it's all-purpose for us. For Oracle-based technology, we use Oracle VM. For non-Oracle stuff, we use VMware.

The first thing I would suggest is that if you have a test environment, the best thing to do is learn. Get certified hardware and then play with it, test it. Make sure you're comfortable with the whole provisioning setup and configuration of it. Then use it on a much more wider scale.

Live migrations work as advertised and, if set right, it moves VMs around to balance out the resources.

Development of the product seems slow, but then again, I do not want a rushed product. Oracle states that this is their solution for their products, but Windows is fully supported. It may not have all the features of VMware, but those features come at a cost (monetarily and performance-wise). I want a rock solid foundation, and I don't want a bunch of hooks into the foundation of my Windows infrastructure.

The system we set up has two nodes (hosts) and one manager. We are using an HP DL 380 for the manager and 385s for the hosts, which, at the time, were not on the compatibility list, but it still works.

We have most of our Windows domain on OVM. One host has one domain controller, the other host has another domain controller. So just in case we lose a host, we do not loose an authentication server.

We had problems with the PV drivers setting CPUs above eight, but this limitation is noted in the ReadMe file.

Once the system was up and running, the VMs ran great! We have Windows 2003, 2008 and 2008R2 servers. At the time, in July 2013, 2012 was not supported.

We've had no issues scaling it for our needs.

I was using Oracle OEM and Dell Foglight on virtual machines that were already on the market. When Oracle came with its own VM product that was better suited to an Oracle environment and easy to use with Oracle builds, we switched.

I set up the manager first. Since this is an Oracle installation, I chose to install the manager software on Oracle Linux 6.1. Nothing fancy needed, but I installed the desktop to make things easier for me. I have two NICs set up, one to connect to my network, and the other to connect to the hosts (for management, VM live migrations, and the heartbeat). I then installed the manager software and you just need to click Next>Next>Next. Be sure to write the password down, as this is the password needed to gain access to the management console (via web).

The hosts were a snap. We do not have any hard drives in the host, but do have a flash card to boot from. So I chose the "minimal" install for the flash card install, and you need to set a root password and a discover password. Make note of them as you will need the discover password to make the connection in the manager. Keep the discover password the same for all hosts to make it easier. Once in the manager, before you discover all the hosts you need to manage, you will need to set what the VLANs are, bonds to the network, how many virtual NICs you will need, etc. After you discover the nodes, you will need to set up a pool repository that keeps all the info on the VMs. This repository should go on the SAN. Another repository should be set up for all your ISOs and other VM volumes if you chose not to use raw LUNs. Connect all the storage you will use (we have HP P4300s). We use all raw iSCSI LUNS for our VMs. We lose some functionality in OVM, but gain others via the SAN (snapshots, etc).

You get enterprise features for no cost or low cost if you chose to purchase support.

Do not attempt to run OVM on old hardware as it only runs on 64-bit systems. Check with the hardware compatibility guide for more details.

This is a great solution and, in my opinion, it's a rare jewel that more Windows shops should be looking at.