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Oracle on VMware

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Hello,

 

I began testing Oracle (11g) on VMware (ESXi 5.0 Update 1) and comparing performance with a physical server.

Virtual machine is configured per VMware best practise for Oracle (paravirtual SCSI controllers, disks separation).

However physical server outperform a VM in transactions per second and response time.

Use the same storage array.

 

I will apreciate any advices/tips/recommendations from users who have experience with Oracle on VMWare.

 

Thank you in advance.

 

Arkady  


Database performance problem

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We're running vcenter 5.1.0b with an Oracle 11g database.

 

We've had various performance problems such as slow search results, slow vcenter service startup, etc.  So I started to look at the database.  It turns out it has  854 tables!  Lots of VPX_HIST_STATX_XX tables.  And some of the various tables I checked like vpx_event_arg and they have over 10 million entries.

 

Looking at Administration | Database Retention Policy, I have 120 days of tasks and 61 days of events stored.  I suppose I could decrease that, but still something is obviously wrong.

 

Are there some performance things I could ask our DBAs to do manually?  For example some tables I could truncate or drop?

Hardware Optimization for my VMWARE

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Hi,

 

I'm currently running a very resource consuming Oracle product on my vmware. Luckily, I have a very geared PC for the job. However, I require the wisdom of seasoned VMware users in the following

 

This is my current processor:

http://ark.intel.com/products/68316/Intel-Core-i5-3470-Processor-6M-Cache-up-to-3_60-GHz

 

Can someone kindly direct me as to what numbers I should be punching in terms of cores? The processor has 4 physical cores and 4 logical cores from what I understood. I tried punching in 4*4 in the settings (as a lucky guess). Didn't work out to my favor.

 

Thanks in advance!

Oracle RAC on vSphere4.1 - Performance Problem

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Dear Mates,

 

We are seeing performance issues for the Oracle RAC VM's. Oracle Support say that queries are waiting for IO. Below is the environment.

 

2 node (VM) Oracle RAC setup.

1 VM in each ESXi server.

No other VM's sharing the physical server as of now but planned for other DB VM's.

Guest OS is RHEL 5.5

CPU and Memory utilization is less than 25% utilized, each VM has got 16GB RAM and 4vCPU's.

Each VM has got 10 RAW LUN's apart from OS in a datastore.

 

ESXi - 4.1 Update 2

Storage - HP EVA

Physical Server - HP Blade BL 460c G7

San connectivity VC Flex - 4*8 GB FC link with speed set as 4GB to match storage controller speed.

 

Attached are the performance report from vCenter server for respective VM's.

 

Do you see any abnormalities in values from the report, any help on this case is highly appreciated.

P2V of Oracle databases

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I have two seperate oracle databases that are overlapping one older version and one newer version

I would like to convert the databases into virtual machines but i need to do it with minimal down time

 

1) What would i need to concider when taking on this task (Best Practices)

 

2) How long would the P2V take per Gig of data

 

3) Is there a way to minimize the down time

 

4) Is there and alternative solution such as mirroring

 

Kind Regards

 

Roberto

Reservation Conflict on RHEL 6 with Oracle RAC

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I've been searching for any hints I can find out my problem, but nothing has worked so I'm trying here.  I'm seeing this message in /var/log/messages:

Jul 13 10:45:59 oratest1 kernel: sd 3:0:1:0: reservation conflict
Jul 13 10:45:59 oratest1 kernel: sd 3:0:1:0: [sdc] Unhandled error code
Jul 13 10:45:59 oratest1 kernel: sd 3:0:1:0: [sdc] Result: hostbyte=DID_OK driverbyte=DRIVER_OK
Jul 13 10:45:59 oratest1 kernel: sd 3:0:1:0: [sdc] CDB: Write(10): 2a 00 00 08 00 11 00 00 01 00

 

I believe this is what is causing errors like this to show up in my Oracle alert logs:

<msg time='2012-07-13T14:09:01.596-05:00' org_id='oracle' comp_id='rdbms'

client_id='' type='UNKNOWN' level='16'

host_id='oratest1.harding.edu' host_addr='10.10.2.195' module=''

pid='5205'>

<txt>Errors in file /u01/app/oracle/diag/rdbms/awdv/awdv1/trace/awdv1_ckpt_5205.trc:

ORA-00206: error in writing (block 3, # blocks 1) of control file

ORA-00202: control file: &apos;+DATA/awdv/controlfile/current.283.787679375&apos;

ORA-15078: ASM diskgroup was forcibly dismounted

ORA-15078: ASM diskgroup was forcibly dismounted

</txt>

</msg>

 

This is the first time I've tried to set up Oracle RAC in VMware so I probably missed something very small, but I cannot for the life of me find what it is.

 

My setup is:

 

RHEL 6.3 (upgraded from a fresh 6.2 install)

vSphere 4.1

Oracle RAC 11.2.0.3

Latest VMware  Tools

 

I'm using vmdk files for all my disk groups.  The cluster starts just fine and I can connect to the databases, but they rarely stay up more than a few hours with these errors.

 

I'm not using fence_scsi or any of the sg3_utils stuff, etc...

 

I've got disk.locking="false" in my vmx file and all the multi-writer flags for the scsi drives used by ASM.

 

There are no errors in the vmware.log file.

 

I feel like I just set something up wrong and maybe VMware and the oracle cluster are fighting each other with locks?

 

Has anyone seen anything like this or have any suggestions where to look next?

Enable hyperthreading for virtualized Oracle 11gR2 database (OEL57)?

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We are virtualizing our Oracle 11gR2 databases (running on OEL57 64-bit) on Vmware 5.1.   I've read information at various locations that hyperthreading is not recommended for Oracle 11g database.  One example is here, however, I seen many more:

 

http://bryangrenn.blogspot.com/2011/08/hyperthreading.html

 

My issue is that Vmware themselves recommend enabling hyperthreading for virtalized Oracle databases in their Oracle Databases on VMwareBest Practices Guide.

 

Does anyone have any practical expierence with this issue that can be shared?  What are the advantages and disadvantages of enabling hyperthreading for our virutalized Oracle 11gR2 on OEL57 64-bit virtual machines


Thanks, Fred

Enterprise Manager Plugin for Oracle on VMware License Optimization

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Is confusion, or lack of knowledge around Oracle licensing policies and fees on VMware preventing your enterprise from leveraging the technical and business benefits of Oracle on VMware to the fullest?

 

Blue Medora is seeking interested Beta participants to help us validate the features and functionality of a new Oracle Enterprise Manager (Oracle EM) Plugin, the Blue Medora Oracle Enterprise Manager (12c) Plugin for Oracle on VMware License Optimization.

The plugin provides an Oracle-based solution to the problem of managing Oracle workloads on VMware mixed Cluster environments where virtual machine mobility dramatically increases the risk of Oracle license over deployment and overspending.

 

The primary functionality provided by the plugin includes:

  • Reduce the risk of over deploying Oracle licenses within VMware Clusters
  • Mapping of virtualized Oracle workloads to the physical VMware ESX hosts
  • Detection, alerting, and remediation recommendations for vMotion and DRS Host Affinity related configuration issues
  • Recommendations for improved license optimization of VMware virtualized Oracle workloads

 

if you are interested in seeing more detailed information about the EM12c Plugin for Oracle on VMware License Optimization, and/or you would like to participate in our beta program for this release, please view the page and beta request form by clicking this link:

 

http://www.bluemedora.com/em12c-plugin-oracle-vmware-licensing-optimization-0

We greatly appreciate your input on this matter, so even if you do not want to be a beta participant, please consider sharing your thoughts on whether this set of capabilities would provide value to you and your enterprise.  We are always interested in what customers think; especially when it comes to extending the reach of Enterprise Manager!


Storage vMotion for Oracle RAC VMs

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We are starting to virtualize Oracle RAC at our company.  Initially we followed the Oracle Databases on VMware RAC Deployment guide, which specifies using a bus sharing setting of "none" for most of the SCSI adaptors.  The same guide recommended using the "physical" bus sharing policy for SCSI adaptor related to the CRS and Voting disks.  We eventually ignored this and set the CRS and Voting disk SCSI adaptor settings to "none" like the other disks, probably because we wanted to facilitate vmotion, which cannot be done with the physical setting per KB 1003797.  While provisioning a new pair of RAC VMs, I noticed that storage vmotioning the "primary" VM where I had initially provisioned the shared disk left a copy of the shared disks behind on the old datastore, presumably because the second VM still refers to that location when looking at the shared disk - thus the 2 VMs no longer shared common disks.  How can I allow vmotion and storage vmotion for RAC VMs while preventing storage vmotions from "breaking" the shared disks?  Is there a "safe" way to storage vmotion these VMs?

New Blue Medora Webinar Series on Oracle Enterprise Manager 12c Cloud Control and Managing VMware

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Continues popular "how to" sessions on BI Publisher and takes a closer look at new VMware management capabilities in the latest update to Enterprise Manager Plugin for VMware. See how increased automation improves productivity for monitoring and managing Oracle on VMware.  Links to more information and registration on this page: http://bit.ly/1bLQ4A4

Oracle 9i in VMware SCSI conflict errors

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We have a copy of our production oracle cluster environment (three node) running in our VMware cluster.   We use this for backup purposes.   We run into this weird error once in a while:

 

Servername kernel: I/O error: dev 08:21, sector 45

Servername kernel:scsi1 (0,0,0) : RESERVATION CONFLICT

Servername kernel: I/O error: SCSI disk error : host 1 channel 0 id 0 lun 0 return code = 18

 

Then sometimes we get:

 

Servername kernel: ocfs_rw_direct : brw_kiovec() -5

Servername kernel: I/O error: need to fail out

 

THis causes the OCMSTART service to crash - taking down all the databases with it.

 

There doesn't seem to be a pattern at all - it worked just fine for weeks and then this happened twice this week.  I looked in this form and found this:

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1034165

 

We do not have that turned on currently does anyone have any experience with that?  I have seen where people suggest that you move both database servers to the same host to help with the heart beat, also seen were one person suggested changing the disks to "independent" mode.

 

Before I start taking shots in the dark I was hoping someone might have an idea which direction to start.

 

Thanks in advance for any ideas.

Migrate Oracle RAC to Vmware

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Hi;

 

Am wondering if anyone has ever tried migrating a present RAC environment (2 node cluster using ASM accessing a SAN for the data and flash). I know I can convert the physicals but all documentation I have found on disk sharing points to creating the disks and doing the multi-writer option. This is not possible when the added disk is using a Raw Device Mapping which is my only option when presenting the LUNS to the host server. This is an ora10g and ESXi 5.1.

 

Thanks

Introducing the Blue Medora vC Ops Management Pack for Oracle Enterprise Manager

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As part of VMware’s efforts to expand the ecosystem around vC Ops, VMware partnered with Blue Medora to take over the two existing vC Ops Adapters for IBM and Oracle… read more… or a snapshot

Oracle EBS is patehtically working on VM Ware although it has same specs as of physical machine.

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Hi Everyone,

We are running Oracle EBS on Physical machine having specs as follows:

 

DB

X2 Quad Core Xeon 2.4 GHz

32 GB RAM

x2 146GB SAS Drive with RAID-1 for OS

SAN HDD x10 450GB SAS 15K i.e. 4.0TB but RAID-5 implemented (2.3TB allotted to DB)

x4 NIC but 1 NIC used 10/100/1000


Apps

X2 Quad Core Xeon 2.4 GHz

32 GB RAM

x2 146GB SAS Drive with RAID-1 for OS

SAN HDD x10 450GB SAS 15K i.e. 4.0TB but RAID-5 implemented (500GB allotted to Apps)

x4 NIC but 1 NIC used 10/100/1000

 

We are facing serious issues when migrated Oracle EBS on vmware infrastructure.

Issue are related to high I/Os and high CPU usage hence performance of the application gets down badly whereas same application on physical machine working fine. We would also like to share physical machine is with lesser specification.


Following are specs of Oracle & VM Ware machine;

Oracle EBS is with 11g v1.1.07 Database and R12 v12.1.3 Apps

OS for above applications is RED HAT Enterprise Linux 5.5 64bit

ESXi version 5.5.0 build 1331820


Hope to have a positive reply.

Whose running Oracle on VMware

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Hi Folks,

 

I keen on finding out the names of some large UK corporates have taken the plunge and virtuliased Oracle on VMware for production workloads. Although the company I work for has already started virtualising Dev/Test environments on VMware it has not yet opted to do the same for Production/Pre-Production. The reluctance is based around the support policy issues by Oracle - i.e supported vs. certified.

 

Anyway, I am putting forward a proposal to use VMware for production workloads and if I can name a few large corporates that already do this (especially in the Finanacial Sector) then I think it will help with the proposal. So if you either work for a large corporate or know of a large corporate that uses Oracle on VMware in production, and are happy to share the name, then it will be greatly received.


Seeking Beta-Testers for new VMware vCOPs based 'WebLogic On VMware' monitoring

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Hello 'Oracle on VMware' VMware Community members:

 

 

Blue Medora is seeking product beta feedback from interested vCOPS admins responsible for monitoring/managing Oracle WebLogic J2EE workloads running within VMware virtualized environments. 

 

 

The beta will primarily include design and operational feedback on the next release of the Blue Medora VMware vCenter Operations (vCOPs) Management Pack for Oracle OEM.  The Beta is focused on delivering enhancements around WebLogic J2EE including additional vCOPs-based metrics, supermetrics, and dashboards that have been designed to provide integrated views of 'Oracle WebLogic on VMware' performance and capacity.

 

 

If you have any interest, please drop us a note to beta@bluemedora.com.  

 

 

Thanks in advance.

http://i.imgur.com/Os5UoH2.jpg

Oracle ASM or not?

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Hi all!

 

I just read VMware's document titled "Oracle Database on VMware Best Practices Guide"... This is a very good document but I am wondering why it only adresses database setup using Oracle ASM.

 

I understand that for best throughput, one would be better to use ASM...

(I also understant that raw device mapping is the best configuration for performance - BUT I definitely would not recommend using RDM for the management complexity it adds..).

 

It does NOT seems simple to implement ASM here because of responsabilities (sysadmins vs dba).

 

So my question are:

 

1- Does anybody *NOT* using ASM for their Oracle Database on VMware with success?

What I mean by that is, no ASM instance, datafiles on VMFS file system...

 

2- Does anybody actually measured the difference in performance (between using ASM and NOT using ASM)?

 

3- I know it is adviced as a best practices (for best throughput) to separate online redo logs and data files - but is realy that bad NOT to do it?

Otherwise said, how detrimental is it to merge logs with datafiles.

 

Any thoughts/references are welcome...

Jocelyn

Issues on Installing Oracle on Windows Server 2008 Guested on VMware Workstation 10

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I am trying to install Oracle 11g R2 on Windows Server 2008 Guested on VMware Workstation 10 but I am getting this Warning on Enterprise Manager Configuration  at the end of installation.

http://i.stack.imgur.com/lMvX4.png

Besides, when I tried to connect to hr database through Oracle SQL Developer I am getting following error:


http://i50.tinypic.com/148g203.png

Can you please let me know what I have done wrong? and how can I fix This? Thanks

vCenter Ops for Oracle EM12c, 30 Minute Webcast

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Oracle ASM disk setup

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I think I may need some help getting the storage for my ASM right. I changed companies recently and the new place is a Windows house so the Oracle databases are all on 2008 R2 machines. I have run Oracle RAC on both physical and virtual before, but only in Linux/Unix environments (which so far I still prefer) so I'm still learning some of the ins and outs. This company is also looking at moving to RAC, so ASM is in the mix. To begin my testing, I have set up an ASM instance for a single host which will eventually become a development hub holding several databases. However, even before I've set up any databases, the host is locking up. I suspect it has something to do with the disk configuration in that while the lock ups have occurred while the vm is idling, several lock-ups have happened when I try to drop a disk from within ASM. I followed the documentation that Oracle provided for Windows platforms, but this documentation of course does not offer insight into storage virtualization.

 

Here is my configuration:

VMware: vSphere 5.5

OS: Windows 2008 R2 Standard

Memory: 12G

Storage (LSI SCSI): OS: 60G; ASM: 20G, 5G, 5G

Oracle Grid: 11.2.0.4 (plus January 2014 CPU)

Oracle Database: 11.2.0.4 (plus January 2014 CPU)

 

Other details (maybe important, maybe not):

1) I have a large pages enabled

2) Disks are thin-provisioned. As a side-note, I've always thick-provisioned my ASM disks, but our Sr. IT admin has made a policy that all disks are to be thin-provisioned for efficiency. I'm not sure if this could cause an issue.

3) I am working on having the 3 ASM disks (20G, 5G, 5G) set up on different Paravirtualized SCSI controllers (another policy from the IT admin - LSI SCSI by default) as they will be used for DB, LOG, and FRA respectively.

4) The host also has an OEM 12c Agent installed and running.

 

I'm new to the Windows platform when it comes to Oracle (I've administered plenty of SQL Server DBs), but the lockups don't appear to be generating any kind of data to any logs.

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