I find the VM server features useful for moving VM’s while keeping the most important ones available.
Infrastructure Projects Director at a non-profit with 5,001-10,000 employees
We can move VM’s while keeping the most important ones available. Oracle must improve their support skills and knowledge base to help clients with issues.
What is most valuable?
How has it helped my organization?
With Oracle VM we can deliver new infrastructure much faster by deploying from templates and cloning it after customizing.
What needs improvement?
I would like to see a proper and stable client to access Oracle VM Manager. Installation documents should be improved regarding storage details and shared cluster disks.
For how long have I used the solution?
I have used it for three years for many US, UK and European clients.
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What was my experience with deployment of the solution?
The issues I found were related to cluster disk shared on our SAN. It was about detailed storage configurations.
What do I think about the stability of the solution?
The issues I found were related to cluster disk shared on our SAN. It was about detailed storage configurations.
What do I think about the scalability of the solution?
The issues I found were related to cluster disk shared on our SAN. It was about detailed storage configurations.
How are customer service and support?
Unfortunately, I didn’t see the same level of expertise as I see regarding Oracle Databases. Oracle must improve their support skills and knowledge base to help clients with issues.
Which solution did I use previously and why did I switch?
I also use VMware vSphere, but for Microsoft based solutions (Windows Servers, Sharepoint, MSSQL, etc). Oracle VM is a better choice and cheaper one when we are using Oracle Solutions.
How was the initial setup?
The initial setup was very hard and required me to create a build doc to my company so anyone could do it again. The cluster documentation is not straightforward when we use 3rd party SAN hardware.
What about the implementation team?
I implemented it for British and European clients using my own build document as there was not enough information for Hitachi SAN storages. I would advise you to create a proper POC and test all hardware pieces. Also, Oracle Linux is a must have on these kind of environments.
What's my experience with pricing, setup cost, and licensing?
Well, this is the most important factor on Oracle VM as it is a free solution to implement, and very cheap to license. If you also use Oracle VM as operating system, then all makes sense regarding pricing, support and performance.
What other advice do I have?
It still lacks a reliable Oracle VM Manager able to also report performance. Also, Oracle Support knowledge base is still growing. My advice is to have skilled people to implement it. Although it is cheap, it needs the correct skills for a proper cluster implementation and to resolve issues.
Disclosure: My company has a business relationship with this vendor other than being a customer: I implement it for our clients.
IT Manager at a government with 1,001-5,000 employees
This product is directly related to hardware, so it is a complete technology with hardware, operating system, and virtualization software.
What is most valuable?
- Bare metal virtualization
- SR-IOV
- Live migration
- Hardware compliance
How has it helped my organization?
This product is directly related to hardware, so it is a complete technology with hardware, operating system, and virtualization software.
The following are attributes that have improved my organization -
- Robustness
- Security
- Scalability
- High performance
We have been using IBM POWER hardware, AIX and PowerVM. We were happy with the technology, but switched to Oracle because of cost issues. The new technology is as robust, secure, scalable as IBM. The performance is much better than IBM POWER7 but we did not have a chance to compare POWER8 with new SPARC technology. IBM POWER technologies came one and a half years after Oracle and thus IBM lost a big customer.
What needs improvement?
- The SR-IOV technology should be improved more as it only supports basic functions.
- It does not have a graphical maintenance screen. The OVM manager interface has so little functionality for managing control domains only. It is not a big problem if you have experienced administrators, but it would be nice to have a beautiful screen to use for everything which guides you into not making mistakes.
- Error handling takes the safest way, but safest way may cause business discontinuity. A few bad experiences occurred in this manner and should be fixed. For example, if you restart the server and resources assigned to virtual systems are more than available, it removes all virtual system definitions and resource assignments like WWNs. You have to redefine everything from backups. This takes time and the system is out of service in the meanwhile.
- Virtual WWNs were lost in one of the PDOMs while it was in maintenance mode. The system continued with other servers, but all disk access paths had to be re-defined from scratch for some LDOMs. It was so annoying because this was not accepted as a bug by Oracle.
For how long have I used the solution?
We've used it for two years.
What was my experience with deployment of the solution?
We had no issues with the deployment.
What do I think about the stability of the solution?
We had errors, but they were fixed. The hardware and software work perfectly with the new SPARC technology.
What do I think about the scalability of the solution?
We had no issues with scaling it for our needs.
How are customer service and technical support?
We have experienced resources and we made a checklist of what we did with IBM and how to do it in SPARC. After that, we did not need much service and support. Software downloading and bug fix is pretty good with Oracle. We have had quick responses for case tickets from the available time zones.
Which solution did I use previously and why did I switch?
We used IBM PowerVM on AIX servers. The main driver was changing the hardware. Both technologies are hardware specific. So we migrated from POWER hardware, AIX, and PowerVM to SPARC hardware, and OVM for SPARC Solaris.
I can compare triple-to-triple and none has any serious disadvantage to the other. Changing the technology was not a technical decision, but we as technical people declared that they are functionally equal.
How was the initial setup?
The initial setup was straightforward and no more complex than PowerVM.
What about the implementation team?
Our main effort was using in-house resources. The vendor team only supported training.
What's my experience with pricing, setup cost, and licensing?
We consolidated lots of databases onto two big iron servers and got benefits from our database licenses. Oracle charges double for IBM server cores if you are using the Oracle database. The government procurement process may not care about price competition, so we defined our requirements, and bidding was made by another organization. IBM and Oracle bidding brought lower prices for the initial procurement cost. Maintenance costs are directly related to the initial price.
RISC hardware may seem more expensive than Intel CISC, but TCO was cheaper with more robust hardware with double performance. So the hardware technology was the main issue. We also decided that engineered systems are not suitable for complex business scenarios.
What other advice do I have?
- Plan everything at the beginning. Do not change plans after you start.
- You must know what you are doing. Never leave any responsibility to the vendor or a third-party contractor.
- Write what you do, do what you write. Never leave any detail undocumented.
- Do something, validate documentation, then delete everything and make someone else do the same thing with the documentation.
- Security becomes a big issue after setup. Plan your security requirements during design. The vendor does not care about it. It cannot be added later.
- Plan your disaster recovery requirements and make your designs accordingly.
It seemed to be a great and risky adventure to migrate from IBM Power to Oracle SPARC, but we did the migration in 15 minutes in a complex environment with Oracle databases, SAP application servers, and in-house Java applications. If you see that it brings advantages, do not get scared -- just do it, nothing happens, and it works. You get a new experience.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
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Oracle VM
December 2024
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Senior Digital Technical Lead/Architect at a consumer goods company with 1,001-5,000 employees
We can have one VM to share with the team that has all development tools set up.
What is most valuable?
The most valuable features for us are the large number of available network configurations and its high degree of scalability.
How has it helped my organization?
We've improved a lot as I use it for creating VMs for software development purposes for our team. We can have one VM to share with the team that has all development tools set up so that when a new developer joins the team, they can be ready to work just by copying the VM. So it's saved lots of time for each developer to set up their development environment. Also, it keeps the team aligned with the different tools they use.
What needs improvement?
I would like to see more improvements in the synchronization between the host machine and the VM especially in Mac machines. Also, more features around folder sharing would be an improvement.
For how long have I used the solution?
We've used it for six years.
What was my experience with deployment of the solution?
We have had no issues with the deployment.
What do I think about the stability of the solution?
We have had no stability issues.
What do I think about the scalability of the solution?
We have had no issues scaling it for our needs.
How are customer service and technical support?
Customer Service:
Customer service is very good.
Technical Support:Technical support is very good.
Which solution did I use previously and why did I switch?
I previously used VMware but switched because I got better support from Oracle.
How was the initial setup?
It depends on how deep I want to go, but normally the initial setup is straightforward.
What about the implementation team?
I used a mixed team of vendor and in-house personnel for the implementation.
What's my experience with pricing, setup cost, and licensing?
I think the pricing is fair.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Consultant at a retailer with 10,001+ employees
The Red Hat KVM is better than the OVM in terms of performance and simple support.
What is most valuable?
We were curious and wanted to test the product since we were standardizing our virtualized environment.
We knew that VMware was feature-rich, and we wanted to look as others as well to avoid vendor lock in.
For how long have I used the solution?
I've been using it for one years.
How was the initial setup?
It was complex.
What about the implementation team?
We did it in-house.
What's my experience with pricing, setup cost, and licensing?
We were not happy with the aggressive licensing model of Oracle and thought we would end-up in a similar situation to the Database where we have to pay the license fee for passive nodes as well.
Which other solutions did I evaluate?
We selected VMware and KVM.
What other advice do I have?
The Red Hat KVM is better than the OVM in terms of performance and simple support.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
VMware ESX vs. Oracle VM
This is a very simple post to show the results of some recent testing that Tom and I ran using Oracle SLOB on Violin to determine the impact of using virtualization. But before we get to that, I am duty bound to write a paragraph of text featuring lots of long sentences peppered with industry buzz words. Forgive me, it’s just the way I’m wired.
It is increasingly common these days to find database environments running in virtual machines – even large, business critical ones. The driver is the trend to commoditize I.T. services and build consolidated, private-cloud style solutions in order to control operational expense and increase agility (not to mention reduce exposure to Oracle licenses). But, as I’ve said in previous posts, the catalyst has been the unblocking of I/O as legacy disk systems are replaced by flash memory. In the past, virtual environments caused a kind of I/O blender effect whereby I/O calls become increasingly randomized – and this sucked for the performance of disk drives. Flash memory arrays on the other hand can deliver random I/O all day long because… well, if you don’t know the reasons by now can I just recommend starting at the beginning. The outcome is that many large and medium-sized organisations are now building database-as-a-service platforms with Oracle databases (other database products are available) running in virtual machines. It’s happening right now.
Phew. Anyway, that last paragraph was just a wordy way of telling you that I’m often seeing Oracle running in virtual machines on top of hypervisors. But how much of a performance impact do those hypervisors have? Step this way to find out.
The Contenders
When it comes to running Oracle on a hypervisor using Intel x86 hardware (for that is what I have available), I only know of three real contenders:
- VMware vSphere (ESX)
- Oracle VM Server for x86
- Microsoft Hyper-V
Hyper-V has been an option for a couple of years now, but I’ll be honest – I have neither the time nor the inclination to test it today. It’s not that I don’t rate it as a product, it’s just that I’ve never used it before and don’t have enough time to learn something new right now. Maybe someday I’ll come back and add it to the mix.
In the meantime, it’s the big showdown: VMware versus Oracle VM. Not that Oracle VM is really in the same league as VMware in terms of market share… but you know, I’m trying to make this sound exciting.
The Test
This is going to be an Oracle SLOB sustained throughput test. In other words, I’m going to build an Oracle database and then shovel a massive amount of I/O through it (you can read all about SLOB here and here). SLOB will be configured to run with 25% of statements being UPDATEs (the remainder are SELECTs) and will run for 8 hours straight. What we want to see is a) which hypervisor configuration allows the greatest I/O bandwidth, and b) which hypervisor configuration exhibits the most predictable performance.
This is the configuration. First the hardware:
Violin Memory 6616 flash Memory Array
This is the configuration. First the hardware
- 1x Dell PowerEdge R720 server
- 2x Intel Xeon CPU E5-2690 v2 10-core @ 3.00GHz [so that’s 2 sockets, 20 cores, 40 threads for this server]
- 128GB DRAM
- 1x Violin Memory 6616 (SLC) flash memory array [the one that did this]
- 8GB fibre-channel
And the software:
- Hypervisor: VMware ESXi 5.5.1
- Hypervisor: Oracle VM for x86 3.3.1
- VM: Oracle Linux 6 Update 5 (with the Unbreakable Enterprise v3 Kernel 3.6.18)
- Oracle Grid Infrastructure 11.2.0.4 (for Automatic Storage Management)
- Oracle Database Enterprise Edition 11.2.0.4
Each VM is configured with 20 vCPUs and is using Linux Device Mapper Multipath and Oracle ASMLib. ASM is configured to use one single +DATA disgroup comprising 8 ASM disks (LUNs from Violin) with external redundancy. The database parameters and SLOB settings are all listed on the SLOB sustained throughput test page.
Results: Bare Metal (Baseline)
First let’s see what happens when we don’t use a hypervisor at all and just run OL6.5 on bare metal:
IO Profile | Read+Write/Second | Read/Second | Write/Second |
Total Requests | 232,431.0 | 194,452.3 | 37,978.7 |
DB Requests | 228,909.4 | 194,447.9 | 34,461.5 |
Optimized Requests | 0.0 | 0.0 | 0.0 |
Redo Requests | 3,515.1 | 0.3 | 3,514.8 |
Total(Mb) | 1,839.6 | 1,519.2 | 320.4 |
Ok so we’re looking at 1519 MB/sec of read throughput and 320 MB/sec of write throughput. Crucially, the lines are nice and consistent – with very little deviation from the mean. By dividing the amount of time spent waiting on db file sequential read(i.e. random physical reads) with the number of waits, we can calculate that the average latency for random reads was 438 microseconds.
Results: VMware vSphere
VMware is configured to use Raw Device Mapping (RDM) which essentially gives the benefits of raw devices… read here for more details on that. Here are the test results:
IO Profile | Read+Write/Second | Read/Second | Write/Second |
Total Requests | 173,141.7 | 145,066.8 | 28,075.0 |
DB Requests | 170,615.3 | 145,064.0 | 25,551.4 |
Optimized Requests | 0.0 | 0.0 | 0.0 |
Redo Requests | 2,522.8 | 0.1 | 2,522.7 |
Total(Mb) | 1,370.0 | 1,133.4 | 236.7 |
Average read throughput for this test was 1133 MB/sec and write throughput averaged at 237 MB/sec. Average read latency was 596 microseconds. That’s an increase of 36%.
In comparison to the bare metal test, we see that total bandwidth dropped by around 25%. That might seem like a lot but remember, we are absolutely hammering this system. A real database is unlikely to ever create this level of sustained I/O. In my role at Violin I’ve been privileged to work on some of the busiest databases in Europe – nothing is ever this crazy (although a few do come close).
Results: Oracle VM
Oracle VM is based on the Xen hypervisor and therefore uses Xen virtual disks to present block devices. For this test I downloaded the Oracle Linux 6 Update 5 template from Oracle’s eDelivery site. You can see more about the way this VM was configured here. Here are the test results:
IO Profile | Read+Write/Second | Read/Second | Write/Second |
Total Requests | 160.563.8 | 134,592.9 | 25,970.9 |
DB Requests | 158,538.1 | 134,587.3 | 23,950.8 |
Optimized Requests | 0.0 | 0.0 | 0.0 |
Redo Requests | 2,017.2 | 0.2 | 2,016.9 |
Total(Mb) | 1,273.4 | 1,051.6 | 221.9 |
This time we see average read bandwidth of 1052MB/sec and average write bandwidth of 222MB/sec, with the average read latency at 607 microseconds, which is 39% higher than the baseline test.
Meanwhile, total bandwidth dropped by 31%. That’s slightly worse than VMware, but what’s really interesting is the deviation. Look at how ragged the lines are on the OVM test! There is a much higher degree of variance exhibited here than on the VMware test.
Conclusion
This is only one test so I’m not claiming it’s conclusive. VMware does appear to deliver slightly better performance than OVM in my tests, but it’s not a huge difference. However, I am very much concerned by the variance of the OVM test in comparison to VMware. Look, for example, at the wait event histograms for db file sequential read:
Wait Event Histogram
-> Units for Total Waits column: K is 1000, M is 1000000, G is 1000000000
-> % of Waits: value of .0 indicates value was <.05%; value of null is truly 0
-> % of Waits: column heading of <=1s is truly <1024ms, >1s is truly >=1024ms
-> Ordered by Event (idle events last)
% of Waits
Hypervisor | Event | Total Watts | <1ms | <2ms | <4ms | <8ms | <16ms | <32ms | <=1ms | >1s |
Baremetal | db file sequential read | 5557 | 98.7 | 1.3 | 0.0 | 0.0 | 0.0 | 0.0 | ||
VMWare ESX | db file sequential read | 4164 | 92.2 | 6.7 | 1.1 | 0.0 | 0.0 | 0.0 | ||
Oracle VM | db file sequential read | 3834 | 95.6 | 4.1 | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 |
The OVM tests show occasional results in the two highest buckets, meaning once or twice there were waits in excess of 1 second! However, to be fair, OVM also had more millisecond waits than VMware.
Anyway, for now – and for this setup at least – I’m sticking with VMware. You should of course test your own workloads before choosing which hypervisor works for you…
Thanks as always to Kevin for bringing Oracle SLOB to the community.
Disclosure: My company has a business relationship with this vendor other than being a customer: I work for Violin Memory
Manager, IT at a renewables & environment company with 5,001-10,000 employees
The solution is easy to use with minimal cost when it is shut down
Pros and Cons
- "The solution is easy to use. You can spin one up when you need to and then shut it down."
- "I would like to be able to ship all of our logs. This feature could exist and I am just not aware of it."
What is our primary use case?
I manage the Oracle Cloud infrastructure, including all our VMs, firewalls and load balances.
What is most valuable?
The solution is easy to use. You can spin one up when you need to and then shut it down. When it is shut down the cost is minimal. It makes it very easy to do testing and training, including 'what-if'' situations.
What needs improvement?
I would like to be able to take all our logs and ship them to a corporate site. However, this feature could exist and I just haven't had the chance to explore that.
What do I think about the stability of the solution?
Stability is good, I would rate it an 8 out of 10 in this area.
What do I think about the scalability of the solution?
Scalability is good.
What's my experience with pricing, setup cost, and licensing?
The price compares well with other solutions. Oracle has flexible payment and cost methods. We use an annual credit plan by committing to one year in the Oracle environment. By making this commitment they provide deep discounts for what we do. They also offer a pay as you go and monthly plans.
What other advice do I have?
I would rate Oracle VM a 9 out of 10.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Highly scalable, perfect support, free, and easy to manage
Pros and Cons
- "Its ease of management and simplicity are most valuable. It is free, and you can provision an unlimited number of VMs at no cost for clients. They also provide perfect support."
- "The user interface of the version that we have requires improvement. They have already improved the user interface in the latest version, but we are yet to migrate to that. The new UI is much better. I would like it to be simple. It is serving all of our needs, and I don't think it is necessary to keep adding. We are able to provision a VM in ten minutes, and provisioning it in five minutes will not have any added benefit."
What is our primary use case?
We have a few servers, and I tag them to the storage. Through that, we create VMs by provisioning some RAM, CPU, and storage. The RAM and the CPU get adjusted when we buy more servers to add to the cluster.
We are not using its latest version. We are yet to migrate to its latest version.
How has it helped my organization?
It has saved us millions of dollars by generating many VM's out of a simple server added to a server pool which is highly available.
What is most valuable?
Its ease of management and simplicity are most valuable. It is free, and you can provision an unlimited number of VMs at no cost for clients. They also provide perfect support.
What needs improvement?
The user interface of the version that we have requires improvement. They have already improved the user interface by moving away from OVMM to OVM or KVM which uses the oVirt engine and has a completely new feel for the user interface, but we are yet to migrate to that. The new UI is much better and more intuitive.
I would like it to be simple. It is serving all of our needs, and I don't think it is necessary to keep adding. We are able to provision a VM in ten minutes, and provisioning it in five minutes will not have any added benefit.
Just keep it simple.
For how long have I used the solution?
I have been using this solution for over ten years.
What do I think about the stability of the solution?
It is very stable. That's why I've used it for all my clients.
What do I think about the scalability of the solution?
It is highly scalable. It can be scaled to any amount that you want. The RAM, CPU, and storage can be easily scaled.
It is suitable for big and small organizations. We have deployed it for financial institutions and banks with lots of users and VMs. They use it for all kinds of things.
How are customer service and technical support?
We have their 24/7 support. The hardware that we're using is Oracle hardware, and it is mandatory that you have the HW support. We also have field delivery engineers for the hardware support and premium support for Oracle Linux and virtualization.
Their support is perfect and wonderful. They respond immediately, but it also depends on the severity.
Which solution did I use previously and why did I switch?
We used a different solution which had license limitations but Oracle VM is free and unlimited VMs can be provisioned at any time if there is adequate compute power.
How was the initial setup?
It is very simple and straightforward. You just need to connect a bunch of servers to the storage, and you're done. For installation, you just download the parts of the software and install them on the server. Once installed, you discover them through the management interface, and that's about it.
The software installation takes about 20 minutes, but it also depends on how many services you are attaching to the storage. Its maintenance involves just upgrades.
What about the implementation team?
We are Oracle Field Engineers and have lots of Specialization around the product.
What's my experience with pricing, setup cost, and licensing?
All other vendors are selling their licenses to use the VM, but Oracle isn't doing that, which is its biggest advantage.
It is free. All you have to do is get the hardware. You can create an unlimited number of VMs for free. With VMware, you have to purchase licenses for the number of VMs that you want to create. You only pay for their premium support, and even that is optional. I am now learning this product, and we can even do without the support.
Which other solutions did I evaluate?
We considered the following below:
1. The physical memory supported by Oracle VM is higher
2. No of vCPU supported on guest(VM) is higher
3. Product is free and this is the best part
What other advice do I have?
I would recommend this solution to others. I have recommended this to many different clients. It is for free, which is its biggest advantage. We are also Oracle partners, so we tend to go for Oracle.
I would rate Oracle VM a ten out of ten.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company has a business relationship with this vendor other than being a customer: Partner
Technical Officer at ADN Telecom
Reliable and customizable, but lacks flexibility
Pros and Cons
- "There's a lot of space to customize the solution if you need to."
- "The solution needs more features and flexibility in terms of communicating with other platforms. If it had that, it would be the perfect product."
What is most valuable?
I really appreciate the stability of the solution. It's quite reliable.
There's a lot of space to customize the solution if you need to.
What needs improvement?
The solution needs more features and flexibility in terms of communicating with other platforms. If it had that, it would be the perfect product.
If there was an option that made customization easier, it would make for a better solution.
The solution needs to be more integration capabilities overall.
For how long have I used the solution?
I've been using the solution for about one year. I don't have too much experience with the solution, personally.
What do I think about the stability of the solution?
The stability is quite good. It's reliable. There aren't glitches, nor are there bugs. It doesn't crash or freeze. It works well for us.
What do I think about the scalability of the solution?
The solution is not very scalable. We are using Oracle CC, and it's not very flexible. It can't merge or communicate with other systems, which limits things quite a bit.
In our company, more than 100 people are currently using the solution.
How are customer service and technical support?
We've reached out to technical support in the past and have been very satisfied with their level of response. We don't have a problem with them at all. We've had a good experience overall.
Which solution did I use previously and why did I switch?
We had to switch from a different solution to Oracle. We're an Oracle partner in our country. We have a sister company, which is also a partner of Oracle. Previously, we were on Citrix. It is an open-source platform.
How was the initial setup?
I didn't handle the implementation. I don't know if the initial setup was complex or straightforward. Other people on my team handled that part of the process.
What's my experience with pricing, setup cost, and licensing?
I'm on the technical side of things, so I don't deal with the licensing part of the business. I'm not sure what the costs are. It doesn't concern my day-to-day.
What other advice do I have?
We're partners with Oracle.
We are actually an IT service provider and an internet service provider. We have a lot of experience with VMware.
I'm not the person who updates the solution, so I'm not sure what version it is that we are on, but it is most likely the latest.
While the solution is okay, the flexibility is lacking. I would much rather recommend VMware over Oracle VM at this time due to the greater flexibility in that other system.
I'd rate the solution seven out of ten. If it offered much more flexibility or was closer to offering features that were closer to what VMware offers, I would rate it a bit higher.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company has a business relationship with this vendor other than being a customer: partner
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On OVM, you just need few tunable parameters on PVM virtualmachine to make it almost as fast as bare metal is. Perhaps someday I share those to global world for free.