Ocr and voting file heth

Hi gurus,
is there any method to check health of the ocr and voting files. How do we know that if ocr or voting files are corrupted.
Thank you!

returns an individual status for each file as well as a result for the overall OCR integrity check. The following is a sample of the OCRCHECK output:
$ pwd
/u01/db/crs/10.2.0/bin
$ ocrcheck
Status of Oracle Cluster Registry is as follows :
         Version                  :          2
         Total space (kbytes)     :    1049004
         Used space (kbytes)      :      15948
         Available space (kbytes) :    1033056
         ID                       : 941199149
         Device/File Name         : /dev/rhdiskpower52
                                    Device/File integrity check succeeded
                                    Device/File not configured
         Cluster registry integrity check succeeded
The following ocrdump utility examples extract various types of OCR information and write it to various targets:
ocrdump
Writes the OCR content to a file called OCRDUMPFILE in the current directory.
ocrdump MYFILE
$ ocrdump
$crsctl query css votedisk
and also using cluvfyrefer the link:-http://download.oracle.com/docs/cd/B19306_01/rac.102/b14197/appsupport.htm#BEHBHFJB

Similar Messages

Commands for OCR and Voting File backup Restore?

We have 2 node rac instance on 64-bit win2003 with three diskgroups DATA, BKUP, +FRA.
We have ordered for new servers till then I will not have any test instance but only the production to work on.
I am taking care of db files, ctl, spfile, arcivelog files through RMAN.
The voting file and the ocr file is on raw disks.
I have gone through the rac material but My request is somebody please compile the way and command to backup my ocr and voting file and in case of loss what are the commands to restore the files?
Thanks in advace.
[email protected]

Hi Sami,
Taking backups from OCR
%CRS_HOME%\bin\ocrconfig -export C:\OCR_%DATA%.bkp -s online
Restoring OCR... http://download.oracle.com/docs/cd/B19306_01/rac.102/b14197/votocr.htm#i1016682
Run the following command to add an OCR location using either destination_file or disk to designate the target location of the additional OCR:
%CRS_HOME%\bin\ocrconfig -replace ocr destination_file or disk
Run the following command to add an OCR mirror location using either destination_file or disk to designate the target location of the additional OCR:
%CRS_HOME%\bin\ocrconfig -replace ocrmirror destination_file or disk
Backing Up and recover Voting Disks http://download.oracle.com/docs/cd/B19306_01/rac.102/b14197/votocr.htm#BABDJDHI
with ocopy and crsctl
Regards,
Rodrigo Mufalani

Confusion with OCFS2 File system for OCR and Voting disk RHEL 5, Oracle11g,

Dear all,
I am in the process of installing Oracle 11g 3 Node RAC database
The environment on which i have to do this implementation is as follows:
Oracle 11g.
Red Hat Linux 5 x86
Oracle Clusterware
ASM
EMC Storage
250 Gb of Storage drive.
SAN
As of now i am in the process of installing Oracle Clusterware on the 3 nodes.
I have performed these tasks for the cluster installs.
1. Configure Kernel Parameters
2. Configure User Limits
3. Modify the /etc/pam.d/login file
4. Configure Operating System Users and Groups for Oracle Clusterware
5. Configure Oracle Clusterware Owner Environment
6. Install CVUQDISK rpm package
7. Configure the Hosts file
8. Verify the Network Setup
9. Configure the SSH on all Cluster Nodes (User Equivalence)
9. Enable the SSH on all Cluster Nodes (User Equivalence)
10. Install Oracle Cluster File System (OCFS2)
11.Verify the Installation of Oracle Cluster File System (OCFS2)
12. Configure the OCFS2 (/etc/ocfs2/cluster.conf)
13. Configure the O2CB Cluster Stack for OCFS2
BUT, here after i am a little bit confused on how to proceed further. The next step is to Format the disk and mount the OCFS2, Create Software Directories... so and so forth.
I asked my system admin to provide me two partitions so that i could format them with OCFS2 file system.
He wrote back to me saying.
*"Is what you want before I do it??*
*/dev/emcpowera1 is 3GB and formatted OCFS2.*
*/dev/emcpowera2 is 3GB and formatted OCFS2.*
*Are those big enough for you? If not, I can re-size and re-format them*
*before I mount them on the servers.*
*the SAN is shared storage. /dev/emcpowera is one of three LUNs on*
*the shared storage, and it's 214GB. Right now there are only two*
*partitions on it- the ones I listed below. I can repartition the LUN any*
*way you want it.*
*Where do you want these mounted at:*
*/dev/emcpowera1*
*/dev/emcpowera2*
*I was thinking if this mounting techique would work like so:*
*emcpowera1: /u01/shared_config/OCR_config*
*emcpowera2: /u01/shared_config/voting_disk*
*Let me know how you'd like them mounted."*
Please recommend me what i should convey to him so that i can ask him to the exact same thing.
My second question is, as we are using ASM, for which i am gonna configure ASM after clusterware installation, should i install Openfiler??
Pls refer the enviroment information i provided above and make recommendations.
As of now i am using Jeffery Hunters guide to install the entire setup. You think the entire install guide goes well with my enviroment??
http://www.oracle.com/technology/pub/articles/hunter_rac11gr1_iscsi.html?rssid=rss_otn_articles
Kind regards
MK

Thanks for ur reply Mufalani,
You have managed to solve half part of my query. But still i am stuck with what kind of mount point i should ask the system admin to create for OCR and Voting disk. Should i go with the mount point he is mentioning??
Let me put forth few more questions here.
1. Is 280 MB ok for OCR and voting disks respectively??
2. Should i ask the system admin to create 4 voting disk mount points and two for ocr??
3. As mentioned by the system admin.
*/u01/shared_config/OCR_config*
*/u01/shared_config/voting_disk*
Is this ok for creating the ocr and voting disks?
4. Can i use OCFS2 file system for formating the disk instead of using them as RAW device!!?
5. As u mentioned that Openfiler is not needed for Configuring ASM... Could you provide me the links which will guide me to create partition disks, voting disks and ocr disks!! I could not locate them on the doc or else were. I did find a couple of them, but was unable to identify a suitable one for my envoirement.
Regards
MK

Shared file system recomended for OCR and voting Disk in 10g R2

Dear Friends,
For Oracle 10g R2 (10.2.0.5) 64 bit which shared file system is recomended for OCR and voting Disk (NFS / raw devices / OCFS2)
For Datafiles and FRA i planned to use ASM
Regards,
DB

Hi,
If your using standard edition then you got no choice but raw devices
http://docs.oracle.com/cd/B19306_01/license.102/b14199/options.htm#CJAHAGJE
for ocfs2 you need to take extra care
Heartbeat/Voting/Quorum Related Timeout Configuration for Linux, OCFS2, RAC Stack to Avoid Unnecessary Node Fencing, Panic and Reboot [ID 395878.1]

OCR and voting disks on ASM, problems in case of fail-over instances

Hi everybody
in case at your site you :
- have an 11.2 fail-over cluster using Grid Infrastructure (CRS, OCR, voting disks),
where you have yourself created additional CRS resources to handle single-node db instances,
their listener, their disks and so on (which are started only on one node at a time,
can fail from that node and restart to another);
- have put OCR and voting disks into an ASM diskgroup (as strongly suggested by Oracle);
then you might have problems (as we had) because you might:
- reach max number of diskgroups handled by an ASM instance (63 only, above which you get ORA-15068);
- experiment delays (especially in case of multipath), find fake CRS resources, etc.
whenever you dismount disks from one node and mount to another;
So (if both conditions are true) you might be interested in this story,
then please keep reading on for the boring details.
One step backward (I'll try to keep it simple).
Oracle Grid Infrastructure is mainly used by RAC db instances,
which means that any db you create usually has one instance started on each node,
and all instances access read / write the same disks from each node.
So, ASM instance on each node will mount diskgroups in Shared Mode,
because the same diskgroups are mounted also by other ASM instances on the other nodes.
ASM instances have a spfile parameter CLUSTER_DATABASE=true (and this parameter implies
that every diskgroup is mounted in Shared Mode, among other things).
In this context, it is quite obvious that Oracle strongly recommends to put OCR and voting disks
inside ASM: this (usually called CRS_DATA) will become diskgroup number 1
and ASM instances will mount it before CRS starts.
Then, additional diskgroup will be added by users, for DATA, REDO, FRA etc of each RAC db,
and will be mounted later when a RAC db instance starts on the specific node.
In case of fail-over cluster, where instances are not RAC type and there is
only one instance running (on one of the nodes) at any time for each db, it is different.
All diskgroups of db instances don't need to be mounted in Shared Mode,
because they are used by one instance only at a time
(on the contrary, they should be mounted in Exclusive Mode).
Yet, if you follow Oracle advice and put OCR and voting inside ASM, then:
- at installation OUI will start ASM instance on each node with CLUSTER_DATABASE=true;
- the first diskgroup, which contains OCR and votings, will be mounted Shared Mode;
- all other diskgroups, used by each db instance, will be mounted Shared Mode, too,
even if you'll take care that they'll be mounted by one ASM instance at a time.
At our site, for our three-nodes cluster, this fact has two consequences.
One conseguence is that we hit ORA-15068 limit (max 63 diskgroups) earlier than expected:
- none ot the instances on this cluster are Production (only Test, Dev, etc);
- we planned to have usually 10 instances on each node, each of them with 3 diskgroups (DATA, REDO, FRA),
so 30 diskgroups each node, for a total of 90 diskgroups (30 instances) on the cluster;
- in case one node failed, surviving two should get resources of the failing node,
in the worst case: one node with 60 diskgroups (20 instances), the other one with 30 diskgroups (10 instances)
- in case two nodes failed, the only node survived should not be able to mount additional diskgroups
(because of limit of max 63 diskgroup mounted by an ASM instance), so all other would remain unmounted
and their db instances stopped (they are not Production instances);
But it didn't worked, since ASM has parameter CLUSTER_DATABASE=true, so you cannot mount 90 diskgroups,
you can mount 62 globally (once a diskgroup is mounted on one node, it is given a number between 2 and 63,
and other diskgroups mounted on other nodes cannot reuse that number).
So as a matter of fact we can mount only 21 diskgroups (about 7 instances) on each node.
The second conseguence is that, every time our CRS handmade scripts dismount diskgroups
from one node and mount it to another, there are delays in the range of seconds (especially with multipath).
Also we found inside CRS log that, whenever we mounted diskgroups (on one node only), then
behind the scenes were created on the fly additional fake resources
of type ora*.dg, maybe to accomodate the fact that on other nodes those diskgroups were left unmounted
(once again, instances are single-node here, and not RAC type).
That's all.
Did anyone go into similar problems?
We opened a SR to Oracle asking about what options do we have here, and we are disappointed by their answer.
Regards
Oscar

Hi Klaas-Jan
- best practises require that also online redolog files are in a separate diskgroup, in case of ASM logical corruption (we are a little bit paranoid): in case DATA dg gets corrupted, you can restore Full backup plus Archived RedoLog plus Online Redolog (otherwise you will stop at the latest Archived).
So we have 3 diskgroups for each db instance: DATA, REDO, FRA.
- in case of fail-over cluster (active-passive), Oracle provide some templates of CRS scripts (in $CRS_HOME/crs/crs/public) that you edit and change at your will, also you might create additionale scripts in case of additional resources you might need (Oracle Agents, backups agent, file systems, monitoring tools, etc)
About our problem, the only solution is to move OCR and voting disks from ASM and change pfile af all ASM instance (parameter CLUSTER_DATABASE from true to false ).
Oracle aswers were a litlle bit odd:
- first they told us to use Grid Standalone (without CRS, OCR, voting at all), but we told them that we needed a Fail-over solution
- then they told us to use RAC Single Node, which actually has some better features, in csae of planned fail-over it might be able to migreate
client sessions without causing a reconnect (for SELECTs only, not in case of a running transaction), but we already have a few fail-over cluster, we cannot change them all
So we plan to move OCR and voting disks into block devices (we think that the other solution, which needs a Shared File System, will take longer).
Thanks Marko for pointing us to OCFS2 pros / cons.
We asked Oracle a confirmation that it supported, they said yes but it is discouraged (and also, doesn't work with OUI nor ASMCA).
Anyway that's the simplest approach, this is a non-Prod cluster, we'll start here and if everthing is fine, after a while we'll do it also on Prod ones.
- Note 605828.1, paragraph 5, Configuring non-raw multipath devices for Oracle Clusterware 11g (11.1.0, 11.2.0) on RHEL5/OL5
- Note 428681.1: OCR / Vote disk Maintenance Operations: (ADD/REMOVE/REPLACE/MOVE)
-"Grid Infrastructure Install on Linux", paragraph 3.1.6, Table 3-2
Oscar

OCR and Voting Disk Migration to new media

Hello,
We need to move OCR,voting disk and ASM from one storage media to another .I think ASM related files are very easy to move/re map but how OCR and Voting Disk files will be migrated to the new storage media?
Thanks,
S.Mann

Hi,
when you said:
"Move Voting Disk : run as root.
crsctl query css votedisk
crsctl add css votedisk new_backup_san_device
crsctl query css votedisk - Make sure the new device is added
crsctl delete css votedisk current_san_device_to_be_encrypted
crsctl query css votedisk - Make sure that the old one is removed "
I supose the new_backup_san_device could be a raw device??
In my system I have a 2 nodes cluster, oracle 10gR2, RAC and ASM
the ocr and voting disk are stored in /dev/raw/raw1 and /dev/raw/raw2
thoses 2 raw devices are mapped with LUNS in the first storade media.
We are about to change it..
So what must I do at this step? What are the logical steps I must done?
add the new LUNS in the nodes and map it as raw devices?
I have this at the moment:
crw-r----- 1 root oinstall 162, 1 Feb 8 17:33 /dev/raw/raw1
crw-r----- 1 root oinstall 162, 2 Feb 8 17:33 /dev/raw/raw2
crw-r----- 1 oracle oinstall 162, 3 Feb 8 17:33 /dev/raw/raw3
in the case of migration, I must add 3 new row devices?
as this?
crw-r----- 1 root oinstall 162, 1 Feb 8 17:33 /dev/raw/raw1
crw-r----- 1 root oinstall 162, 2 Feb 8 17:33 /dev/raw/raw2
crw-r----- 1 oracle oinstall 162, 3 Feb 8 17:33 /dev/raw/raw3
crw-r----- 1 root oinstall 162, 1 Feb 8 17:33 /dev/raw/raw4
crw-r----- 1 root oinstall 162, 2 Feb 8 17:33 /dev/raw/raw5
crw-r----- 1 oracle oinstall 162, 3 Feb 8 17:33 /dev/raw/raw6
That's it?
Thanks to help

OCR and Voting Disk Mirror

Hi,
We have oracle 10.2.0.4 RAC database. Now we are planning to mirror the OCR and Voting disk. Currently we are using SAN mirror copy. SAN admin assures that we don't need mirror copy as it is being mirrored at the disk level. Can any one please suggest me if we need any mirror copy of these. If so what advantages I get from the regular SAN copy.

You use SAN or High Availability Storage + RAID. You don't need to mirror OCR/VOTING .
Anyway , If you can do it... Mirror OCR + Multi VOTING... , that's good thing oracle recommend.
By the way, If you can not mirror OCR + multi VOTE on 10g, You should backup VOTE File ("dd" linux command) after setup completed/add node/delete node.
http://download.oracle.com/docs/cd/B19306_01/rac.102/b28759/adminoc.htm#sthref148
And Check OCR file automatic backup:
$ ocrconfig -showbackup
http://download.oracle.com/docs/cd/B19306_01/rac.102/b14197/ocrsyntax.htm

OCR and Voting Disk

Hi all,
What is the difference b/w OCR and Voting Disk

The voting disk is a file that manages information about node membership and the OCR is a file that manages cluster and RAC database configuration information.
Voting Disk -Oracle Clusterware uses the voting disk to determine which instances are members of a cluster. The voting disk must reside on a shared disk. Basically all nodes in the RAC cluster register their heart-beat information on thes voting disks. The number decides the number of active nodes in the RAC cluster. These are also used for checking the availability of instances in RAC and remove the unavailable nodes out of the cluster. It helps in preventing split-brain condition and keeps database information intact. The split brain syndrome and its affects and how it has been managed in oracle is mentioned below.
For high availability, Oracle recommends that you have a minimum of three voting disks. If you configure a single voting disk, then you should use external mirroring to provide redundancy. You can have up to 32 voting disks in your cluster. What I could understand about the odd value of the number of voting disks is that a noe should see maximun number of voting disk to continue to function, so with 2, if it can see only 1, its not the maximum value but a half value of voting disk. I am still trying to search more on this concept.
OCR (Oracle Cluster Registry) - resides on shared storage and maintains information about cluster configuration and information about cluster database. OCR contains information like which database instances run on which nodes and which services runs on which database.
Oracle Cluster Registry (OCR) is one such component in 10g RAC used to store the cluster configuration information. It is a shared disk component, typically located in a shared raw volume that must be accessible to all nodes in the cluster. The daemon OCSSd manages the configuration info in OCR and maintains the changes to cluster in the registry.
ocrcheck is the command to check out the OCR.

OCR and voting disk locations

How to check the location of the OCR and voting disk?
How to know if they are on OCFS2? On Raw?

The OCRCHECK utility displays the version of the OCR's block format, total space available and used space, OCRID, and the OCR locations that you have configured. OCRCHECK performs a block-by-block checksum operation for all of the blocks in all of the OCRs that you have configured. It also returns an individual status for each file as well as a result for the overall OCR integrity check. The following is a sample of the OCRCHECK output:
Status of Oracle Cluster Registry is as follows :
Version : 2
Total space (kbytes) : 262144
Used space (kbytes) : 16256
Available space (kbytes) : 245888
ID : 1918913332
Device/File Name : /dev/raw/raw1
Device/File integrity check succeeded
Device/File Name : /oradata/mirror.ocr
Device/File integrity check succeeded
Cluster registry integrity check succeeded

Ocr and voting disk recreate

Hi,
I'm recreating ocr and voting disk as for a lab test on RHEL4(10gr2),for server side ons configuration for racgons ,what should be my port? below is the output from ons.config file .Should it be 6200 or 6101 for both nodes?Please let me know .
cat ons.config
localport=6101
remoteport=6200
loglevel=3
useocr=on
CRS_home/bin/racgons add_config hostname1:port hostname2:port
Thanks

Hi
You may run this command with user root
root@yourracnode1# $CRS_HOME/bin/racgons add_config yourracnode1:6200 yourracnode2:6200
After run,this command helps you to ping your ons
root@yourracnode1# $ORA_CRS_HOME/bin/onsctl ping
I hope this helps you
BR,
Hasan

AIX 6.1 - Do we need HACMP to store the OCR and Voting Disks on Raw Logical

We are planning to install 11G r1 rac on AIX 6.1. We will use clusterware and ASM. We would like to avoid GPFS and HACMP.
We plan to put the Clusterware OCR and Voting Disks on Raw Logical Volumes.
I do not believe we need HACMP. see the passage below from doc:
Oracle® Clusterware
Installation Guide
11g Release 1 (11.1) for AIX Based Systems
B28258-05
Configuring Raw Disk Devices for Oracle Clusterware Without HACMP or GPFS
If you are installing Oracle RAC on an AIX cluster without HACMP or GPFS, then you
must use shared raw disk devices for the Oracle Clusterware files. You can also use
shared raw disk devices for database file storage. However, Oracle recommends that
you use Automatic Storage Management to store database files in this situation.
This section describes how to configure the shared raw disk devices for Oracle
Clusterware files (Oracle Cluster Registry and Oracle Clusterware voting disk). It also
describes how to configure shared raw devices for Oracle ASM and for Database files,
if you intend to install Oracle Database, and you need to create new disk devices.
Question:
Do we need HACMP to store the OCR and Voting Disks on Raw Logical Volumes? According to the passage above we do not.

You can archive log either in shared location or separate location associated with each instance. Oracle recommends using a shared location for all the instances in a RAC configuration. Check the topic "Location of Archived Logs for the Cluster File System Archiving Scheme" in Clusters Administration and Deployment Guide

SAN for ocr and vote file for Linux RAC

Hi Experts,
Based on Oracle document, i have to create 2 devices for the OCR and 3 for the VOTE in RAC.
However, my boss think SAN maybe mirroe OCR and Vote file. It is enough for 1 location in SAN storage. It does not matter how many driver sidplay for user.
Actually it is only one SAN in back side.
Any Explain for OCR/VOTE file in SAN?
Thnaks
JIm

The idea to have these multiplex copy is to reduce the single point of failure, non the less, that's reason you build RAC in the first place isn't?
So if it's possible you'd better have redundancy on physical disk level (LUN etc) then logic level (volume, partition etc) then file level.
Well I agree modern SAN are pretty reliable and had built in redundancy on physical and logic level, but if you only have single vote disk and OCR, your RAC is going to fail right away when vote disk and OCR has problem. The chances are if your OCR and Vote disk has logical corruption, the corruption is going to populated to your mirrors. Even if your mirror is good you still need to get mirror copy to replace working copy and restart cluster during the time your RAC is offline.
With more than one OCR and voting disk, your RAC is likely to survive single OCR/vote disk failure, so you can fix the problem while RAC online.

OCR and voting disk location

Hi all,
I'm testing to install an Oracle RAC database (11g) on linux RHE 5 with a shared storage DELL Equallogic SCSI SAN.
I will setup a 2 nodes and i will use ASM for the database storage. I'm new in RAC database and i'm checking some docs and find that for the installation should have 3 volumes.
1- volumes for OCR and voting disk
2- volume for Database file (ASM)
3- volume for flash Recovery area and archive log file (ASM)
My question is which file system i will use for OCR and voting disk volume as i know for Datafiles and flash recovery area i will use ASM, but for voting disk i cannot use ASM because the system will access first OCR before starting ASm instance.
If i will use other file system how can i do ?
Thank you.

Hi
Thank you all for your help, actually i'm again facing problem in installing ASMlib, i cannot find ASMlib package for my OS even Raw device service is also not present.
My OS is CentOS 6 and Oracle 11g R2 RAC then installation type.
[root@Etopup-srv01 ~]# cat /etc/redhat-release
CentOS release 6.4 (Final)
Would you please help me what can i do to configure my ASM disk group ?
Thank you.

Raw partition creation on RHEL5 for OCR and Voting disk

Hi all,
I want to create MAp raw device for block device to use for installing OCR and Voting disk. As i see fro mmetalonk note 465001.1 we can creaet rules to do that but when i follow the steps given in that note, nothing is changed see bellow:
[root@cdr-analysis01 ~]# /sbin/scsi_id -g -s /block/sdae/sdae1
360014380024d178600005000006c0000
[root@cdr-analysis01 ~]# /sbin/scsi_id -g -s /block/sdaf/sdaf1
360014380024d178600005000006f0000
Create udev naming rule file /etc/udev/rules.d/55-oracle-naming.rules
# Configure persistent, user-defined Oracle Clusterware device file names
KERNEL=="/dev/sdae1", BUS=="scsi", PROGRAM=="/sbin/scsi_id", RESULT=="360014380024d178600005000006c0000", NAME="ocr1", OWNER="root", GROUP="oinstall", MODE="0640"
KERNEL=="/dev/sdaf1", BUS=="scsi", PROGRAM=="/sbin/scsi_id", RESULT=="360014380024d178600005000006f0000", NAME="vote1", OWNER="oracle", GROUP="oinstall", MODE="0640"
[root@cdr-analysis01 ~]# udevtest /block/sdae/sdae1
main: looking at device '/block/sdae/sdae1' from subsystem 'block'
udev_rules_get_name: add symlink 'disk/by-id/scsi-360014380024d178600005000006c0000-part1'
udev_rules_get_name: add symlink 'disk/by-path/pci-0000:10:00.1-fc-0x50014380025ae47d:0x0007000000000000-part1'
run_program: '/lib/udev/vol_id --export /dev/.tmp-65-225'
run_program: '/lib/udev/vol_id' returned with status 4
run_program: '/sbin/scsi_id'
run_program: '/sbin/scsi_id' returned with status 1
udev_rules_get_name: no node name set, will use kernel name 'sdae1'
udev_device_event: device '/block/sdae/sdae1' already in database, validate currently present symlinks
udev_node_add: creating device node '/dev/sdae1', major = '65', minor = '225', mode = '0640', uid = '0', gid = '6'
udev_node_add: creating symlink '/dev/disk/by-id/scsi-360014380024d178600005000006c0000-part1' to '../../sdae1'
udev_node_add: creating symlink '/dev/disk/by-path/pci-0000:10:00.1-fc-0x50014380025ae47d:0x0007000000000000-part1' to '../../sdae1'
main: run: 'socket:/org/kernel/udev/monitor'
main: run: '/lib/udev/udev_run_devd'
main: run: 'socket:/org/freedesktop/hal/udev_event'
main: run: '/sbin/pam_console_apply /dev/sdae1 /dev/disk/by-id/scsi-360014380024d178600005000006c0000-part1 /dev/disk/by-path/pci-0000:10:00.1-fc-0x50014380025ae47d:0x0007000000000000-part1'
The name is not changed and the raw partition is not created
Could you help
Please
Raitsarevo

raitsarevo wrote:
I want to create MAp raw device for block device to use for installing OCR and Voting disk. Why not define it as a raw devices (despite raw devices being deprecated in the current Linux kernel, it is still available for backwards compatibility)? Quite easy to configure.
Do the install and then when done, rename the disks from block devices back to character devices - there's a Metalink note that covers how to do that. Sorry - not in the office and do not have the Metalink note at hand. However, have used this approach successfully with 3 RAC installation (RHEL4 and RHEL5) in recent months.

How do I define 2 disk groups for ocr and voting disks at the oracle grid infrastructure installation window

Hello,
It may sound too easy to someone but I need to ask it anyway.
I am in the middle of building Oracle RAC 11.2.0.3 on Linux. I have 2 storage and I created three LUNs in each of storage so 6 LUNs in total look in both of servers. If I choose NORMAL as a redundancy level, is it right to choose my 6 disks those are created for OCR_VOTE at the grid installation? Or should I choose only 3 of them and configure mirroring at latter stage?
The reason why I am asking this is that I didn't find any place to create asm disk group for ocr and voting disks at the oracle grid infrastructure installation window. In fact, I would to like to create two disk groups in which one of groups contains three disks those were brought from storage 1 and the second one contains rest three 3 disk that come from the last storage.
I believe that you will understand the manner and help me on choosing proper way.
Thank you.

Hi,
You have 2 Storage H/W.
You will need to configure a Quorum ASMDisk to store a Voting Disk.
Because if you lose 1/2 or more of all of your voting disks, then nodes get evicted from the cluster, or nodes kick themselves out of the cluster.
You must have the odd number of voting disk (i.e 1,3 or 5) one voting disk per ASM DISK, So 1 Storage will hold more voting disk than another storage.
(e.g 3 Voting Disk - 2 voting stored in stg-A and 1 voting disk store in stg-B)
If fail the storage that hold the major number of Voting disk the whole cluster (all nodes) goes down. Does not matter if you have a other storage online.
It will happen:
https://forums.oracle.com/message/9681811#9681811
You must configure your Clusterware same as RAC extended
Check this link:
http://www.oracle.com/technetwork/database/clusterware/overview/grid-infra-thirdvoteonnfs-131158.pdf
Explaining: How to store OCR, Voting disks and ASM SPFILE on ASM Diskgroup (RAC or RAC Extended) | Levi Pereira | Oracl…

Ocr and voting file heth

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