How to customize the location of OCR and voting disks.

Similar Questions

• OCR and voting disks (vd) are in ASM, I can stop the ASM instance?

  Hello
  
  I have two RAC nodes in the program of production installation and test setup. OCR and voting disks (vd) are in ASM, I can stop the ASM instance?
  
  -Kumar

  Hi Kumar,

  No, we can't.

  Best practice is that you need to stop the battery Oracle Clusterware on the node on which you must stop the Oracle ASM instance.

  Use "crsctl stop cluster node_name - n" or "crsctl stop crs" for this purpose.

  It could be that useful...

  Thank you
  LaserSoft

• Backup of the OCR and voting disk

  Hello
  
  A few quick questions related to the backup of the OCR (via ocrconfig-export) and vote (via SD) disc.
  
  
  (a) I can back up disc OCR and vote while the database is running.
  
  (b) do I need login as root for the backup of the OCR disk and vote.
  
  
  Thank you
  C.

  Hello

  I recommend you read the TechNote below, if you use Clusterware 11.1 or earlier:

  * Information on OCR and drive to vote in Oracle 10 g Clusterware (RAC) [ID 1092293.1] 2 *.
  Follow these topics:
  7 backup and restore of OCR and voting disk
  8. backup of the OCR files
  9 restore the OCR file

  Kind regards
  Levi Pereira

• May read IBM easy level affect OCR and voting disk diskgroup?

  Hello world

  I have an Oracle 11 g (11.2.0.4) CARS on a Solaris 10 Sparc Server, we also have a midsize v3700 IBM and we had no problem until last Friday, so far there has been activated the easy level feature since we connected two drives in the solid state it. Minutes later the diskgroup DG_GRID that stores OCR and voting disks that are non-mounted and the resource ora.crsd changed in DISCONNECTED state.

  We have that at this time, it was a question of synchronizing the disks, but this situation is repeated every day since last Friday,

  The alertlog displays these messages:

  2015-04-30 00:48:09.228:

  [crsd (19493)] CRS-1013: the location of the OCR in ASM disk group is inaccessible. Details in u01/app/11.2.0/grid/log/sur01/crsd/crsd.log.

  2015-04-30 00:48:09.253:

  [crsd (19493)] CRS - 0804:Cluster Ready Service interrupted due to the Oracle Cluster registry error [PROC-26: error when accessing the physical storage]

  ]. Details at (: CRSD00111 :) in u01/app/11.2.0/grid/log/sur01/crsd/crsd.log.)

  2015-04-30 00:48:09.366:

  [ohasd (1939)] CRS - 2765:Resource 'ora.crsd' failed on the server "sur01.

  2015-04-30 00:48:11.128:

  [crsd (19518)] CRS-1013: the location of the OCR in ASM disk group is inaccessible. Details in u01/app/11.2.0/grid/log/sur01/crsd/crsd.log.

  also, when I checked the crsd.log I can read the following lines:

  2015-04-30 00:46:04.664: [CRSPE] [48] {1:48096:3524} LAUGHED [ora. DG_GRID. [DG sur01 1] target new State: [OFFLINE] old value: [Online]

  2015-04-30 00:46:04.665: treatment [CRSOCR] [46] {1:48096:3524} Multi write batch...

  2015-04-30 00:46:04.665: [CRSPE] [48] {1:48096:3524} LAUGHED [ora. DG_GRID. [DG sur01 1] internal new State: [STOP] old value: [STABLE]

  2015-04-30 00:46:04.666: [CRSPE] send message [48] {1:48096:3524} to agfw: id = 33323

  2015-04-30 00:46:04.666: [AGFW] [43] {1:48096:3524} Agfw Proxy Server received the message: RESOURCE_STOP [ora. DG_GRID. [DG sur01 1] ID 4099:33323

  2015-04-30 00:46:04.666: [CRSPE] [48] {1:48096:3524} CRS-2673: attempt to stop ' ora. DG_GRID. DG' on 'sur01.

  ...

  So I noticed the diskgroup DG_GRID was down, I re - it easily mounted without warnings and errors, and then I started the resource ora.crsd, according to the journal of alerts, everything was ok

  2015-04-30 06:33:12.848:

  [crsd (16199)] CRS-1012: OCR service began the sur01 node.

  2015-04-30 06:33:13.402:

  [crsd (16199)] CRS - 1201:CRSD began the sur01 node.

  The fact is, it is events every day approximately at the same time (00:30-00:45) and he started since the easy tier feature has been enabled in the SAN.

  I want to know is there any recorded case that happened with this feature? How can I solve this?

  Any help will be appreciated.

  Looks like maybe even cause high latency but low IOPS / s

  In other words, san won't answer the door immediately because he's busy household and crsd looks forward to someone to answer the door.

  You can layer does not to futz with things?

• 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 the node membership and OCR is a file that manages the cluster and RAC database configuration information.

  Vote of disc - Oracle Clusterware uses the drive to vote to determine which instances are members of a cluster. The voting disk must reside on a shared disk. Basically, all the nodes of the RAC cluster register their heartbeat information on teas voting records. The number will determine the number of nodes in the RAC cluster. They are also used to check availability of instances at the JRC and remove the unavailable out of the cluster nodes. It helps prevent the condition "split brain" and maintains intact the database information. The split brain syndrome and its effects and how it has been successful in oracle is mentioned below.
  For high availability, Oracle recommends to have a minimum of three disks with voting rights. If you configure a single voting disk, then you must use external mirror to provide redundancy. You can have up to 32 disks with right to vote in your cluster. What I could understand the odd value of the number of disks to vote is that a Noah should see voting disk to continue to operate, so with 2 maximum number, if he sees that 1, is not the maximum value but one half of the value of the voting disk. I always try to look for more on this concept.

  OCR (Oracle Cluster registry) - is located on the shared storage, and maintains information on the configuration of the cluster and cluster database. OCR contains such information which instances of database nodes and services that is running on what database.

  Registry of Cluster Oracle (OCR) is such a component in 10g THAT CARS used to store the cluster configuration information. It is a component of shared disk, usually placed in a shared gross volume that must be accessible to all nodes in the cluster. The demon OCSSd manages the configuration information in the OCR and maintains the changes in the cluster registry.

  ocrcheck is the command to check the OCR.

• About size OCR and voting disk

  Hallo,
  
  I have a simple question for OCR and voting disk in a configuration of RAC 10 g / 11g:
  official documentation talks about sizing OCR and voting disk approximately 280 MB, but they mean each OCR and voting disk LUN?
  
  In other words, for 2 OCR and 3 voting disk, I need 280 * 5 MB (o several single LUN)
  
  Is it so?
  
  THX in advance

  ottocolori wrote:
  Hallo,

  I have a simple question for OCR and voting disk in a configuration of RAC 10 g / 11g:
  official documentation talks about sizing OCR and voting disk approximately 280 MB, but they mean each OCR and voting disk LUN?

  In other words, for 2 OCR and 3 voting disk, I need 280 * 5 MB (o several single LUN)

  Is it so?

  THX in advance

  Yes. See also Re: reduce the size of the OCR file

• OCR and VOTING disks

  Hi all
  
  Only question. On a 10g R2 RAC installation, is allowed to put the discs OCR and VOTING in the case of the ASM? Or this function is available on 11g?
  
  Kind regards
  dbajug

  Hello

  This feature is only available from 11 GR 2!
  11 GR 1 matter still expects records on RAW devices

  Have a look here: http://www.dba-oracle.com/oracle11g/t_cluster_voting_disk_registry.htm

  See you soon
  FJFranken

• Confusion with the file system OCFS2 OCR and voting disk RHEL 5, Oracle11g,

  Hi all
  
  I am trying to install the Oracle 11 g 3 node RAC database
  
  The environment on which I must make this implementation is as follows:
  Oracle 11g.
  Red Hat Linux 5 x 86
  Oracle Clusterware
  ASM
  Storage EMC
  250 GB of disk storage.
  SAN
  
  From now on, I am installing Oracle Clusterware on 3 nodes.
  
  I performed these tasks for cluster installations.
  
  1 configure the kernel parameters
  2 configure the user limits
  3 edit the /etc/pam.d/login file
  4 set up the groups and users to the operating system for Oracle Clusterware
  5. configure the environment Clusterware Oracle owner
  6. install the rpm CVUQDISK package
  7 configure the Hosts file
  8. check the network configuration
  9 configure SSH on all the Cluster nodes (equivalence of the user)
  9 enable SSH on all the Cluster nodes (equivalence of the user)
  10 installing Oracle Cluster File System (OCFS2)
  11. check the Installation of the (OCFS2) Oracle Cluster file system
  12 set the OCFS2 (/ etc/ocfs2/cluster.conf)
  13 set up the stack of Cluster O2CB for OCFS2
  
  BUT, here again the after that I'm a little confused on how to proceed. The next step is to format the disk and mount the OCFS2, directories of software... so, create etc.
  I asked my administration system to provide me with two partitions so that I could get in shape with the OCFS2 file system.
  
  He wrote telling me.
  
  * "Is what you want before I do it?" *
  
  * / dev/emcpowera1 is 3 GB and OCFS2.* format
  * / dev/emcpowera2 is 3 GB and OCFS2.* format
  
  * Those who are big enough for you? If not, I can re-size and re - format the *.
  * before I climb on the servers.*
  * the SAN is shared storage. / dev/emcpowera is one of the three LUNS on *.
  * storage is shared, and it is 214 GB. At the moment there are only two *.
  * partitions on it - the ones I have listed below. Can I repartition the LUN everything *.
  * as you want it.*
  * Where do you want that these climbs to: *.
  
  * / dev/emcpowera1 *.
  * / dev/emcpowera2 *.
  
  * I thought if this mounting technique would work as follows: *.
  
  * emcpowera1: / u01/shared_config/OCR_config *.
  * emcpowera2: / u01/shared_config/voting_disk *.
  
  * Let me know how you would like that mounted. » *
  
  Please recommend me what I should pass so that I can ask him exactly the same.
  
  My second question is, as we use the DSO, for which I'm going to configure ASM after clusterware installation, do I install Openfiler?
  PLS, check the environmental information that I provided above and make recommendations.
  
  As of now, I am using Jeffery hunters guide to install the entire installation. You think the installation guide everything is fine with my environment?
  http://www.Oracle.com/technology/pub/articles/hunter_rac11gr1_iscsi.html?rssid=rss_otn_articles
  
  Kind regards
  MK

  Hello Lawrence,.

  Thank you.

  Mark this question as answered.

  See you soon,.

  Rodrigo Mufalani
  http://mufalani.blogspot.com

• OCR and voting disk file system permissions?

  On a new installation of Oracle Clusterware 11.2 (11.2.0.2) cooked that approval of the OS will be on the filesystem (NFS share) for
  /ocrVote01
  /ocrVote02
  /ocrVote03
  
  ?
  I did /ocrVote01 rac dba
  /ocrVote02 rac dba
  /ocrVote03 rac dba
  And the ocr file is created but it has zero byte. and files with right to vote are not generated?

  yakub21 wrote:
  On a new installation of Oracle Clusterware 11.2 (11.2.0.2) cooked that approval of the OS will be on the filesystem (NFS share) for
  /ocrVote01
  /ocrVote02
  /ocrVote03

  Hello

  Please have a read http://download.oracle.com/docs/cd/E11882_01/install.112/e17212/storage.htm#CDEEBADI

  See you soon

• How to identify the ASM DiskGroup attached to which disks?

  Hi guys,.
  
  In RAC 11 GR 2, how to identify which ASM Diskgroup is attached to which disks... (OS is RHEL 5.4).
  
  We could list ASM starts by,
  *#oracleasm listdisks * but this command does not display the disks assigned to ASM DiskGroup.
  
  Even for check location of OCR and voting disks only show Diskgroup name and not the actual discs.
  $ocrcheck
  $crsctl query css votedisk
  
  
  (as in gr 10, 2 RAC, we entered /etc/rules.d/udev/60-raw-rules raw file mapping of the OCR, voting disk and other ASM Diskgroup)
  
  
  Please help me, as long as the customer place, I could see LUN as assigned to the server and get is not an exact idea whose records have been used for OCR and voting disk DATA Diskgroup.
  
  
  Thank you
  Manish

  And for this, you can use oracleasm querydisk. Using that you can identify which device marked for asm or not. for example you can see below the example.

  [oracle@localhost init.d]$ sqlplus "/as sysdba"
  
  SQL*Plus: Release 10.2.0.4.0 - Production on Thu Jun 3 11:52:12 2010
  
  Copyright (c) 1982, 2007, Oracle.  All Rights Reserved.
  
  Connected to:
  Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
  With the Partitioning, OLAP, Data Mining and Real Application Testing options
  
  SQL> select path from v$asm_disk;
  
  PATH
  --------------------------------------------------------------------------------
  /dev/oracleasm/disks/VOL2
  /dev/oracleasm/disks/VOL1
  
  SQL> exit;
  
  [oracle@localhost init.d]$ su
  Password:
  [root@localhost init.d]# /sbin/fdisk -l
  
  Disk /dev/sda: 80.0 GB, 80000000000 bytes
  255 heads, 63 sectors/track, 9726 cylinders
  Units = cylinders of 16065 * 512 = 8225280 bytes
  
     Device Boot      Start         End      Blocks   Id  System
  /dev/sda1   *           1        1305    10482381   83  Linux
  /dev/sda2            1306        9401    65031120   83  Linux
  /dev/sda3            9402        9662     2096482+  82  Linux swap / Solaris
  /dev/sda4            9663        9726      514080    5  Extended
  /dev/sda5            9663        9726      514048+  83  Linux
  
  Disk /dev/sdb: 80.0 GB, 80026361856 bytes
  255 heads, 63 sectors/track, 9729 cylinders
  Units = cylinders of 16065 * 512 = 8225280 bytes
  
     Device Boot      Start         End      Blocks   Id  System
  /dev/sdb1               1        4859    39029886   83  Linux
  /dev/sdb2            4860        9729    39118275   83  Linux
  [root@localhost init.d]# ./oracleasm querydisk /dev/sdb1
  Device "/dev/sdb1" is marked an ASM disk with the label "VOL1"
  [root@localhost init.d]# ./oracleasm querydisk /dev/sdb2
  Device "/dev/sdb2" is marked an ASM disk with the label "VOL2"
  [root@localhost init.d]# ./oracleasm querydisk /dev/sda1
  Device "/dev/sda1" is not marked as an ASM disk
  [root@localhost init.d]#
  

  Also in windows:

  C:\Documents and Settings\comp>asmtool -list
  NTFS                             \Device\Harddisk0\Partition1           140655M
  ORCLDISKDATA1                    \Device\Harddisk0\Partition2             4102M
  ORCLDISKDATA2                    \Device\Harddisk0\Partition3             4102M
  NTFS                             \Device\Harddisk0\Partition4           152617M
  
  C:\Documents and Settings\comp>
  

  answered by Alex.
  Reference:-How to identify what disc rawdevice is named as VOL1 in ASM OS level

  Happy new year.
  Kind regards

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