If a resource fails, then before attempting to restore OCR, restart the resource. WebThe voting disk is a file that manages information about node membership, and the OCR is a file that manages cluster and Oracle RAC database configuration information. It stores information about the local node only, mainly related to the OHASd (as we will see below). Our storage is EMC SAN. Required fields are marked *. Oracle ASM manages voting disks differently from other files that it stores. You cannot repair the OCR configuration on a node on which the Oracle Cluster Ready Services daemon is running. In addition to using the automatically created OCR backup files, you should also export OCR contents before and after making significant configuration changes, such as adding or deleting nodes from your environment, modifying Oracle Clusterware resources, and upgrading, downgrading or creating a database. voting disk Its application is in surveys, answer sheets, questionnaires and ballots. Nodes with quorum will maintain active membership of the cluster and other nodes (s) will be fenced/rebooted. For a full experience use one of the browsers below. The Oracle Clusterware has the OCR and voting disks open and is actively using them. Disk heartbeat is successful, but network heartbeat is missed.3. You must run the command as a user with administrative privileges. For example, if you have configuration problems that you cannot resolve, or if you are unable to restart Oracle Clusterware after such changes, then restore your configuration using the procedure for your platform. To migrate OCR to Oracle ASM using OCRCONFIG: Ensure the upgrade to Oracle Clusterware 11g release 2 (11.2) is complete. It will also provide steps to move OCR / voting and ASM devices from raw device to block device. Oracle recommends that you configure multiple voting disks during Oracle Clusterware installation to improve availability. Break-in heartbeats indicate a possible error scenario. to Backup OCR and Voting Disk CSSD processes (Cluster Services Synchronization Daemon) monitor the health of RAC nodes employing two distinct heartbeats: Network heartbeat and Disk heartbeat. RAC heartbeat is the polling mechanism that is sent over the cluster interconnect to ensure all RAC. RAC heartbeat is the polling mechanism that is sent over the cluster interconnect to ensure all RAC nodes are available. While marking their own presence, all the nodes also register the information about their communicability with other nodes in the voting disk. on Oct 5 2010. This section includes the following topics for managing voting disks in your cluster: Adding, Deleting, or Migrating Voting Disks. d) All nodes in the RAC cluster register their heartbeat information in the voting disks/files. Like, on my test box, ocrdump shows 676(11.2.0.4)keys in the OCR (could be different on your system). Ensure that the Oracle ASM disk group that you specify exists and is mounted. WebOracle recommends just two diskgroups by default: A DATA diskgroup to hold all data, index, undo and temp files. WebOracle RAC uses two storage locations, which can be accessed by all cluster members: The Oracle Cluster Registry (OCR) Contains information for managing the cluster The Voting Disk Contains information to determine which nodes are active members of the cluster at any given moment In Oracle RAC 10gRelease 2, these storage locations can Successful addition of voting disk B6FF6C1D64B9837D82B1B41D38760445. Oracle Cluster Registry (OCR) and Oracle Local Registry (OLR) Oracle Cluster Registry (OCR) and Oracle Local Registry (OLR) are two very important components of a Grid Infrastructure that help manage the cluster resources. If you run the ocrconfig -add | -repair | -replace command, then the device, file, or Oracle ASM disk group that you are adding must be accessible. For example, the database cannot be started until the asm resource has come up, or the service resource doesnt start until the database has been started. srvctl status diskgroup -g OCR_NEWDG to Restore OCR and Voting Disk Move the SPFILE to newdiskgroup. Check the SPFILE location. If you choose to store the voting disks on a cluster file system, then select the option to configure multiple voting disks, in which case you will have to specify three different file systems based on different disks. OCR and Voting
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