It must be accessed by all nodes in cluster environment. The installation package are included enterprise and standard editions. Using cvu with oracle database 10g release 1 or 2 entry and exit criteria verbose mode. Free download oracle database 10g release 2 for 32 bit windows. This article describes the installation of oracle 10g release 2 10. The windows default location for generating olr backups uses the same path structure. Recover corruptmissing ocr with no backup oracle 10g. Oracle clustware,command line tools, rac,backup,restore. Oracle cluster registry ocr the ocr contains cluster and database configuration information for rac and cluster ready services crs such as the cluster node list, and cluster database instances to node mapping, and crs application resource profiles. At any one time, oracle database always retains the last three backup copies of ocr.
After installing the database change it to archivelog mode. You are faced with a corrupt or missing oracle cluster registry ocr and have no backup to recover from. Oracle dba justin how to backup and restore an oracle database with rman basic. Oracle 10g provides automatic backup of ocr along with manually export of ocr files. If you configured ocr in an oracle asm disk group, then ensure that the oracle asm disk group exists and is mounted. Overview 11g release 2 on wards voting disk data is automatically backed up in the ocr whenever there is a configuration change. Use the ocrconfig add command to add an ocr location to a storage device or oracle automatic storage management oracle asm disk group. These are good tests, yes, but they do not truly replicate difficult scenarios for clusterware to resolve. Moving the oracle cluster registry on unixbased systems moving the oracle cluster registry on windowsbased systems. Oracle database 10g real application clusters handbook. Install oracle 10g release 2 on rhel 5 this is a step by step guide, which will walk you through the installation of oracle 10g on rhel 5.
Starting with oracle database 10g release 2 oracle clusterware will multiplex the ocr and voting disk two for the ocr and three for the voting. It maintains information about the highavailability components in your cluster, such as the voting file details, cluster database instance to node mapping, and crs application resource profiles such as services, virtual interconnect protocol addresses, and so on. It is always important to perform manual faultinjection testing such as physically. Each voting disk must be accessible by all nodes in the cluster for nodes. I installed oracle 12c and i tried to restore my backup. To make a backup copy of the voting disk, use the linux dd command. So use option local to indicate that the operation is to be performed on the oracle local registry. I have tried a lot but have always failed to get the backup of the database in oracle 10g express edition. Restore and recover ocr from backup oracle cluster registry step 1. Aug 24, 2012 adding ocr and voting disk mirroring in oracle 10g the oracle clusterware crs includes two important components. Oracle clusterware 10g, formerly known as cluster ready services crs is software that when installed on servers running the same operating system, enables the servers to be bound together to operate and function as a single server or cluster. Ocr backup and recovery in oracle rac expert oracle dba blog.
How to restore 10g clusterware ocr voting disk ed chen logic. Recover corruptmissing oracle cluster registry ocr with no backup oracle 10g recover corruptmissing oracle cluster registry ocr. The oracle cluster registry in rac ocr, cluster ready services crs, management of the oracle cluster registry backup files in real application clusters, restoring the oracle cluster registry on unixbased systems, restoring the ocr file from the automatically generated ocr backups. Download oracle database 10g release 2 you windows world. In fact according to oracle documentation restoration of voting disks that were copied using the dd or cp command may prevent your clusterware from starting up.
How to restore 12c clusterware suppose we have lost the shared storage as well as ocr data, voting disk and disk groups in a disaster. Nov 16, 2014 loss of ocr, voting disks with no backups of ocr, voting disks in oracle 11gr2 in this article, im posting out a scenario wherein there is a loss of ocr and voting disk and we do not have any backups of these to restore. Managing oracle cluster registry and voting disks oracle docs. To specify an ocr backup location in an oracle asm disk. At any one time, oracle clusterware always retains the. If any node is not passing heatbeat across other note or voting disk, then that node will be evicted by voting disk.
Jul 22, 20 how to recreate ocrvoting disk accidentally deleted applies to. Importexport oracle cluster registry in addition to using the automatically created ocr backup files, you should also export the ocr contents before and after making. Recover corrupt ocr with no backup jagjeets oracle blog. Loss of ocr, voting disks with no backups of ocr, voting.
Later, a new shared storage for 10g rac database has been established. Oracle cluster registry ocr the ocr contains cluster and database configuration information for rac and cluster ready services crs such as the cluster node list, and cluster database. We are 3 people working on a project and what i want is that once we update database in an. The voting disk and the oracle cluster registry ocr.
Restore and recover ocr from backup oracle cluster registry. Oracle have updated the 9ias backup and recovery tool for use with oracle as 10g. The example oracle clusterware environment is configured with three mirrored voting disks and two mirrored ocr files all of which are located. The oracle clusterware includes two important components. Use the ocrconfig backuploc command to specify an ocr backup directory location. Backup and recovery of oracle clusterware ocr june 9, 2009 rac. Please use the menu bar to navigate through around 400 rac linux virtualbox java ee articles. The voting disk is a file that manages information about node membership and the ocr is a file that manages the real application cluster rac database configuration information. May 12, 2011 hi we have a 3 node clusternot on asm and i see that on a particular node the ocr backup is written, i wanted to know is it fine that the backup is written only on. Jun 30, 2010 while working with ocr backup and recovery scenarios, one question came to my mind what if my ocr gets corrupted and there is no backup available to recover.
Starting from oracle 11g, we can also take manual backups of ocr. Restore and recover ocr from backup oracle dba and rac dba. The process daemon ocssd manages the configuration info in ocr and maintains the changes to cluster in the registry. It also keeps information of which database instance run on which nodes and which service runs on which database. To identify ocr backup where the cluster active patch level matches, you need to run the following. The oracle clusterware automatically creates ocr physical backups every four hours. Personalize my dashboard copyright 2019 oracle andor its affiliates all rights reserved. You cannot restore your configuration from an automatically created ocr backup file using the import option. If the ocr backup file is located in an oracle asm disk group, then. There are two methods for ocr backup oracle cluster.
You can store ocr and voting files on oracle asm or a shared file system on standalone clusters. Oracle provides wget utility for downloading the patches remotely. New article has been released for backup and recovery of ocr in oracle rac database. Sometimes we need to download oracle patches or software from a sever where we do not have gui environment.
Oracle clusterware automatically creates ocr backups every 4 hours. As in the previous posts, here are a few commands i used to check that i know how to restore the cluster mandatory files in 12c. Batch script oracle rac rman backup to disk include vote and. After oracle clusterware is installed, start up the asm instances again. Taking backup of database in oracle 10g express edition. Below are the steeps you can use the patches by using wget utility. If you are installing oracle clusterware on a node that already has a singleinstance oracle database 10g installation, then stop the existing asm instances. If you already have a commercial license, you should download your software from the oracle software delivery cloud, which is specifically designed for customer. Backup and recovery of ocr demo part 1 oracle 10g rac. Oracle recommends you use the dd command to backup the voting disk with a. Ocr is a file that manages cluster and oracle real application clusters oracle. The ocr is a shared file located in a cluster file system. How to download oracle software using wget dba tutorials.
Learn cuttingedge technology from oracle experts written by oracle insiders, this comprehensive guide covers everything you need to know about real application clusters lowcost hardware platforms that can rival selection from oracle database 10g real application clusters handbook book. Oracle cluster registry configuration tool command syntax. Ensure that the ocr backup location is not configured on an oracle asm disk group. Backup and recovery of ocr oracle cluster registry. About backing up and recovering the oracle cluster registry. Administering oracle clusterware components oracle docs. How to recreate ocrvoting disk accidentally deleted oracle. If you are installing oracle clusterware on a node that already has a singleinstance oracle. Setting the permissions on ocr backup directory setting up ns directories. Jun 20, 2015 sometimes we need to download oracle patches or software from a sever where we do not have gui environment. For oracle xe there is ready a backup script that uses oracles rman.
Administering ocrbackup and recovery oracle database blog. The crsd process that creates the backups also creates. Using the ocrdump utility to view oracle cluster registry content. Restoring the oracle cluster registry on unixbased systems. In this article are going to have a look at the components of the oracle clusterware existing in oracle gi 11. If a database from oracle database is deleted or lost for any reason, it can be restored by recovering its files with hetman partition recovery and then restore them as described in the part archiving with the means of the operating system. Restore ocr from a weekly backup helmuts rac jee blog. How to restore the ocr and voting disk when they are lost. The below command is used to restore the ocr from the physical backup. Locate physical the ocr backups using showbackup command. Recover corruptmissing oracle cluster registry ocr with no.
Each voting disk must be accessible by all nodes in the cluster. Oracle cluster registry utility reference oracle docs. Jul 22, 2010 how to perform backup of oracle cluster registry ocr and how to recover ocr. To request access to these releases, follow the instructions in oracle support document 1071023. No need to take voting disk backup separately, ocr backup will contain both ocr and voting data. Oracle dba justin how to backup and restore an oracle database with rman basic duration. If you are upgrading the ocr to oracle database 10g release 10. No need to take voting disk backup separately, ocr backup will contain. Sapbasis, oracle,implementation, tutorial,unix,cluster tutorial,management,configuration. Step by step instructions on installing oracle 10g clusterware software 10. I wanted to explore if there is any other way we can. Hi, okay but you have different things here first the. While working with ocr backup and recovery scenarios, one question came to my mind what if my ocr gets corrupted and there is no backup available to recover.
In this blog i present to you ocr and olr backup scripts for rac. Nov 03, 2009 backup and recovery of ocr demo oracle 10g rac. The voting disk is a file that manages information about node membership and the ocr is a file that manages cluster and oracle real application clusters oracle rac database configuration information. It is always important to perform manual faultinjection testing such as physically severing storage and network connectivity paths and doing so with simultaneous failures and cascading failures alike. Managing backups and recovering the ocr using ocr backup files.
Oracle 10g free download from softvela, having many updates through which you can make simple to advance and secure databases. In oracle database 10g release 1 the ocr and voting device are not mirrored within oracle,hence both must be mirrored via a storage vendor method, like raid 1. The oracle cluster registry in rac ocr, cluster ready services crs, management of the oracle cluster registry backup files in real application clusters, restoring the oracle cluster. It maintains information about the highavailability components in your cluster, such as the voting file. Backup and recovery of oracle clusterware ocr oracle. The oracle cluster registry ocr file is a key component of oracle clusterware. In fact according to oracle documentation restoration. Ocr and olr backups must be maintained manually as well and if possible on a shared mount. To restore an ocr from an automatically created ocr backup file. Its what im doing while preparing the ocm 12c exam, but without any clue about what will be at the exam. Oracle provides wget utility for downloading the patches. Oracle database 11g xe express edition install guide and connect with sql developer duration. Before you make any changes to the oracle software, whether you intend to upgrade or patch part of the database or clusterware, or all of your cluster installation, oracle recommends that you create a backup of the oracle software. This is rare but still it happens as oracle takes backups after every 4 hours.
If you already have a commercial license, you should download your software from the oracle software delivery cloud, which is specifically designed for customer fulfillment. Adding ocr and voting disk mirroring in oracle 10g the oracle clusterware crs includes two important components. At any one time, oracle clusterware always retains the latest 3 backup copies of the ocr that are 4 hours old, 1 day old, and 1 week old. Query the cluster active patchlevel in the ocr backup.
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