difference between ocr and voting disk{{ keyword }}

If an Oracle ASM instance fails on any node, then OCR becomes unavailable on that particular node. Begin to start Oracle Clusterware by running the following command as a member of the Administrators group on all of the nodes: Run the following Cluster Verification Utility (CVU) command to verify OCR integrity of all of the nodes in your cluster database: OCR is present for backward compatibility. Because the default backup is on a local file system, Oracle recommends that you include the backup file created with the OCRCONFIG utility as part of your operating system backup using standard operating system or third-party tools. Ensure that the file you created is visible from all nodes in the cluster. Thus heartbeat of various nodes is recorded at different offsets in the voting disk. By default, OLR is located at Grid_home/cdata/host_name.olr on each node. Backups are created when the system is online. External redundancy: A disk group with external redundancy can store only one voting disk, Normal redundancy: A disk group with normal redundancy stores three voting disks, High redundancy: A disk group with high redundancy stores five voting disks. The destination of OCR file has been replaced. This means that a device must exist. My test systems OLR files has about 651 keys. Voting files A small number of failure groups, or failure groups of uneven capacity, can create allocation problems that prevent full use of all of the available storage. such as Oracle RAC databases, listeners, virtual IP addresses (VIPs), and services and any applications. Oracle For Oracle Clusterware 12c, please refer to Software Patch Level and 12c Grid Infrastructure OCR Backup/Restore. The -manualbackup option is especially useful when you want to obtain a binary backup on demand, such as before you make changes to OCR. Use the procedure in this section to add an OCR location. "OCRDUMP Utility Syntax and Options" for more information about the OCRDUMP utility, "Using the OCRCHECK Utility" for more information about the OCRCHECK utility. To add the file as an OCR location, ensure that the Oracle Clusterware stack is running and run the following command as root: You can run this command more than once if you add more than one OCR location. Use the following procedure to import OCR on Linux or UNIX systems: Check whether crsd is running. You cannot restore your configuration from an OCR backup file using the -import option, which is explained in "Administering Oracle Cluster Registry with Oracle Cluster Registry Export and Import Commands".

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