How Prepare Disks for RAC installation

How configure disks for RAC instalation for Windows Enterprise Server 2003

Best resource for RAC on Windows:
www.jobcestbon.com/oracle/RacOnWindows.pdf
HTH
Thanks
-Chandra PabbaI read it, but i unable to configure Shared Memory accourding to this link. Please guide me how i can configure shared Memory for RAC in Windows Server Enterprise 2003.
Thanks

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OVM disks for RAC implementation

Dear All
is there any guide available on how can you create the disks for RAC ASM in OVM 3.3.1 using a fiber channel block level storage?
Thanks
George

You are right, you can't use virtual disks for RAC configuration. Have a look here (especially page 18):
http://www.oracle.com/technetwork/products/clustering/oracle-rac-in-oracle-vm-environment-131948.pdf
Using physical disks means that you create LUNs on your storage array connected to Oracle VM Servers by fabric channel. You map these LUNs to all servers in the pool or all standalone servers where you are going to install your virtual machines being Clusterware nodes. Then you rediscover storage in Oracle VM Manager, mark these LUNs as "shared" in OVMM and add them to your virtual machines as "Physical disks" (by editing guest properties in OVMM).
Alternatively you can directly map iSCSI or NFS storage to your guests. By "directly" I mean you use IP addresses and software in your guests as iSCSI initiator or NFS client - without engaging Oracle VM in the middle.
Regards,
Michal

"Preparing Disk for Netbooted OS Install"

I gather it is normal for an OS installation to indicate it is preparing the h disk for a NetBoot install before it settles on preparing for a local booted install? Both entries have been logged.
The local install message is expected, but not NetBoot.
Thanks.

Let me rephrase:
After installing 10.6 from the Snow Leopard installation DVD, my install log shows both "Preparing Disk for Netbooted OS Install" and "Preparing Disk for a Local Booted Install" entries.
I was curious to know why? I don't do netbooting or any remote admin whatsoever.

Shared Disks For RAC

Hi,
I plan to use shared disks to create Oracle RAC using ASM. What options do I have? OCFS2? or any other option?
Can some one lead me to a documnet on how can I use the shared disks for RAC?
Thanks.

javed555 wrote:
I plan to use shared disks to create Oracle RAC using ASM. What options do I have? You have two options:
1. Create shared virtual, i.e. file-backed disks. These files will be stored in /OVS/sharedDisk/ and made available to each guest
2. Expose physical devices directly to each guest, e.g. an LVM partition or a multipath LUN.
With both options, the disks show up as devices in the guests and you would then provision them with ASM, exactly the same way as if your RAC nodes were physical.
OCFS2 or NFS are required to create shared storage for Oracle VM Servers. This is to ensure the /OVS mount point is shared between multiple Oracle VM Servers.

How Do I Configure SSL for RAC Installation.

Experts,
Requesting your inputs on configuring SSL for my RAC environment.
- Oracle DB version is 11.2.0.2
- RAC is with two nodes.
- Two nodes are : rac1.oracle.com and rac2.oracle.com
- RAC setup has SCAN feature configured. SCAN FQDN : racscan.oracle.com
- All clients talk to RAC DB using SCAN feature as shown below.
client applications -> racscan.oracle.com ---> rac1.oracle.com
---> rac2.oracle.com
- tnsnames.ora file on both RAC instances has hostname as "racscan.oracle.com" instead of their individual phyiscal host names.
How do I configure SSL for RAC:
1. Do I need to generate certificate request for individual hostnames or only for SCAN hostname ?.
2. If I generate a certificate based on SCAN hostname, how does SSL work since SCAN hostname is not a phyiscal host name ?
3. What is recommended strategy for configuring SSL for RAC environment ?
Thanks

The documentation on the creation of Oracle Wallets is not specific to RAC, and the RAC SCAN instructions for TCPS are very vague on the specific requirements for the certificates required in the wallets for proper operation. I too am struggling to get it to work. Does anyone have a more technical guide to the specific configuration of the certificates needed and what specific configuration file changes need to be made?
Also, the self signed documentation is getting REALLY old. Oracle, please stop giving instructions that demonstrate irresponsibility and show the proper method of certificate requesting and importing to wallets.
Edited by: user11338513 on Mar 21, 2012 2:23 PM

How many disk for redundancy on Grid Infrastructure 11gR2 Installation?

I would like too know, How many least disk for normal and high redundancy ?
and please explain to me about structure of normal redundancy & high redundancy.
Edited by: user13049841 on Mar 15, 2011 2:37 AM
Edited by: user13049841 on Mar 15, 2011 2:37 AM

Redundancy Level      Minimum Number of Disks
External           1
Normal                2
High                3
If you only have a disk, means you will not be able to implement normal/high redundancy. In external redundancy ASM presumes the data duplication is taken care at a storage level (e.g. mirrored SAN etc.).
structure of normal redundancy & high redundancyRedundancy is actually a data duplication, so let say if a disk in a Disk Group1 fails, and there is a fail over Disk Group B, so ASM will continue operation.
Must read note for you..
http://download.oracle.com/docs/cd/B28359_01/server.111/b28301/asm002.htm#ADMQS12079
Extractions from the link..
Failure groups are used to determine which ASM disks to use for storing redundant copies of data. example, if 2-way mirroring is specified for a file, ASM automatically stores redundant copies of file extents in separate failure groups.

Consultancy Services for RAC installation and Internet Security Audit

Dear All,
"Warm greetings from Venkatesh"
We are proud to announce that, we have started a leading Database, Networking and Internet security Consulting organization at PUNE with a global presence through which we offers a focused, Excellence Solutions for Database, Networking and internet security for vulnerabilities and ethical hacking to the organizations to achieve a sustainable performance and results, and to contribute to the delivery of Quality Product, Solutions and Services to transform the human lives every day.
We offer a customized Consulting and Corporate Training Services at competitive sizes of organization in all major verticals for Performance Excellence as under with six months maintenance support after RAC installation
Design and Implementation of Oracle RAC (Real Application Cluster)
- Oracle solution for High Availability & Grid Computing
- Versions: Oracle 10gR2, 11gR1 & 11gR2
- Operating System: Linux, Windows, Solaris, AIX
- Storage: ASM, OCFS2
- ASM Cluster File System (ACFS) in Oracle 11gR2
- Building RAC setup in VMware Environment
- Feature: Load Balancing, Failover, Dynamic addition of Nodes to Grid
Design and Implementation of Oracle Data Guard
- Oracle solution for Disaster Management
- Primary & Secondary Sites
- Logical & Physical Standby Database
Internet Security Audit for Vulnerabilities and Ethical Hacking
- Penetration testing
- Source code audit
- Information security training
- Website design and development
- Data Centre audit
- ISO 27701 consultancy
We also offer Corporate Trainings for
- Oracle RAC Administration
- Automatic Storage Management (ASM)
- Data Guard
Please feel free to revert back for any queries.
Regards
Venkatesh
mail: [email protected]
Edited by: vjpune on Apr 17, 2010 4:44 AM

Hi! keyur,
Greetings from venkatesh
Sorry for delay, i was busy with some assignments.
Actually, we are consultancy service provider for those organization who needs to Install Oracle RAC server. We provide entire services i.e. from designing to implementation of RAC server, provide solution for load balancing, desaster management and so on.. what i had mention in the earlier post.
Also we offer corporate training to the organization in RAC administration, ASM, Data Guard.
I think this info will get you to understand our services..
we welcome inquires if any from your end.
Regards
Venkatesh
mail: [email protected]

Redo log groups/files on the local disk for RAC DB

Whether is it possible/supported to place redo log files/groups on the local disk for a RAC databases ?
Thank you,

Hi Mufalani,
are you sure about this one? I'd think that this only works as long as the nodes don't restart/crash. I can imagine this like this:
The nodes store redo logs on local disks which are NFS-exported to the other node. Everything should be fine. But when one node crashes/reboots, the other one has to perform crash recovery for the crashed instance but this won't work when the NFS mount (with redo logs) is unaccessible. So I would not want to do this.
Bjoern

How to cleanup / remove RAC installation (CRS,RDBMS,ASM)

Hi, all
How to remove or cleanup RAC installation after ran OUI deinstall it couldn't finish and get a error... because 1 node of 3 was off (the box).
ACS

Don't forget to mention the Oracle version you're working with.

CRS and Voting Disk for RAC

Hi Friends,
How much disk space size should be allocated for CRS and Voting Disk?
Thanks a lot

Hi,
Is it ok if i put them into one LUN ? say /u02 200M under it are directory CRS and Voting, or it is
better to separate them into two LUNS /u02 /u03.
Thanks a lot

How prepare Query for time series algorithm?

Hi every one,
i want next 6 month prediction, how prepare the Query ,
I have Date column,Crime column,Incidents Column,I going with next 6 month so how we get date columns month wise or date wise,
if month wise means,How split the Year and month from date colum??
Please i need some help.....waiting for reply.....
pandiyan

Hi Leo,
Thanks a lot for replay.
but using help of this blog also this problem not solve.
is this problem can we solve using "Seasonal Decomposition of Time Series by Loess".
Regards,
Manish

Doubts about shared disk for RAC

Hi All,
I am really new to RAC.Even after reading various documents,I still have many doubts regarding shared storage and file systems needed for RAC.
1.Clusterware has to be installed on a shared file system like OCFS2.Which type of hard drive is required to install OCFS2 so that it can be accessed from all nodes??
It has to be an external hard drive???Or we can use any simple hard disk for shared storage??
If we use external hard drive then does it need to be connected to a seperate server alltogether or can it be connected to any one of the nodes in the cluster???
Apart from this shared drives,approximately what size of hard disk is required for all nodes(for just a testing environment).
Sincerely appreciate a reply!!
Thanks in advance.

Clusterware has to be installed on shared storage. RAC also requires shared storage for the database.
Shared storage can be managed via many methods.
1. Some sites using Linux or UNIX-based OSes choose to use RAW disk devices. This method is not frequently used due to the unpleasant management overhead and long-term manageability for RAW devices.
2. Many sites use cluster filesystems. On Linux and Windows, Oracle offers OCFS2 as one (free) cluster filesystem. Other vendors also offer add-on products for some OSes that provide supported cluster filesystems (like GFS, GPFS, VxFS, and others). Supported cluster filesystems may be used for Clusterware files (OCR and voting disks) as well as database files. Check Metalink for a list of supported cluster filesystems.
3. ASM can be used to manage shared storage used for database files. Unfortunately, due to architecture decisions made by Oracle, ASM cannot currently be used for Clusterware files (OCR and voting disks). It is relatively common to see ASM used for DB files and either RAW or a cluster filesystem used for Clusterware files. In other words, ASM and cluster filesystems and RAW are not mutually exclusive.
As for hardware--I have not seen any hardware capable of easily connecting multiple servers to internal storage. So, shared storage is always (in my experience) housed externally. You can find some articles on OTN and other sites (search Google for them) that use firewire drives or a third computer running openfiler to provide the shared storage in test environments. In production environments, SAN devices are commonly employed to provide concurrent access to storage from multiple servers.
Hope this helps!
Message was edited by:
Dan_Norris

OCR and VOTING DISK for RAC Database on ASMLib env

Can i use raw device for OCR and Voting Disk while installing Clusterware, i am planning to use ASM with ASMlib,
i know i can configure asm with dbca when i am using raw devices (to be user for ASM), How i can configure diskgroups when i use ASMlib, Can i configure ASM diskgroup with dbca , if yes plz forward me some metalink notes to study or any other help.

Hi,
Can i use raw device for OCR and Voting Disk while installing ClusterwareYes:
http://www.oracle.com/technology/pub/notes/technote_singh_crs.html
"Step 3: Create Raw Devices for the OCR and Voting Disk Before we start the installation"
plz forward me some metalink notes to study or any other help. I like Madhu Tumma's examples with raw devices because it has step-by-step examples:
http://www.rampant-books.com/book_2004_1_10g_grid.htm
Hope this helps . . .
Donald K. Burleson
http://www.dba-oracle.com

VMWare Fusion & Shared Disks for RAC install

Does anyone have any advice on how best to install a 2 node RAC 10G on a Macbook Pro. I've searched the forums here and haven't found much on this subject.
I'm having problems setting up the shared disks to be used for the voting disk and ASM.
Cheers,
Mike

This link might help you in what you are looking for.
http://www.apple.com/itpro/profiles/rotech/
Good luck,
--MM

I just bought two ibooks. they power up but all the screen will display is a little folder that blinks icons but thats all i have two disks for software installation and software restore but all it does is that folder thingie. please help.

Please help. Is there any other way to reset to factory settings without the disks.

You need the original installation disks specific for each machine or compatible Mac OS X retail disks which you can buy on eBay or from several dealers.
To see which OS X you can use go to thse links and look up the specs on your iBooks.
http://www.everymac.com/
http://mactracker.ca/
Links to sources.
http://www.welovemacs.com/apsyso.html
http://hardcoremac.stores.yahoo.net/
http://www.buycheapr.com/us/result.jsp?ga=us14&q=leopard+10.5+os+x#
http://store.fastmac.com/index.php?cPath=10_5_6
http://oldermac.hardsdisk.net/oldmac.html#hard
http://rescuemyclassicmac.com/index.html
http://www.pure-mac.com/appud.html
http://lowendmac.com/2013/classic-mac-os-downloads-and-updates/

How Prepare Disks for RAC installation

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