How do I check my OLR backup?

Posted on by Mary Andersen

How do I check my OLR backup?

Check of existence of OLR configuration file “/var/opt/oracle/olr. loc” passed Check of attributes of OLR configuration file “/var/opt/oracle/olr. loc” passed WARNING: This check does not verify the integrity of the OLR contents. Execute ‘ocrcheck -local’ as a privileged user to verify the contents of OLR.

What is OLR file?

OLR is an operating system file which resides on every node in the cluster and manages Oracle Clusterware configuration information for each particular node. It contains manageability information about Oracle Clusterware, including dependencies between various services.

What is OCR and 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. In a nutshell, OCR is used by CRSd and OLR by the OHASd.

Where do I find OCR files?

OCR config file “/etc/oracle/ocr. loc” check successful Disk group for ocr location “+DATA” is available on all the nodes Checking OCR backup location “/u01/app/12.1. 0.2/grid/cdata/racscan” OCR backup location “/u01/app/12.1.

Where is my OCR and voting disk?

For Oracle RAC 10g Release 1

  1. stop the CRS stack on all nodes using “init.crs stop”
  2. Edit /var/opt/oracle/ocr.loc on all nodes and set up ocrconfig_loc=new OCR device.
  3. Restore from one of the automatic physical backups using ocrconfig -restore.
  4. Run ocrcheck to verify.
  5. reboot to restart the CRS stack.

What is OCR and OLR and voting disk in Oracle RAC?

The voting disk is a file that manages information about node membership, and the OCR is a file that manages the cluster and Real Application Clusters (RAC) database configuration information. The Oracle Clusterware installation process creates the voting disk and the OCR on a shared storage volume.

How do I restore my OCR?

Use the following steps to restore the voting disk from the OCR backup.

  1. Step 1: Disable the CRS automatic start service.
  2. Step 2: Restart the node.
  3. Step 3: Verify that the CSR service did not start.
  4. Step 4: Clear the header of the voting disk.
  5. Step 5: Start the cluster.
  6. Step 6: Start the ASM with a PFILE.

What is voting file in Oracle RAC?

– Voting disk is a file in which all the nodes of a cluster register their heartbeat information. – It also contains the list of the active nodes. – Voting disks or files are like attendance registers where nodes mark their attendance (heartbeats) to confirm they are alive.

What is OCR OLR voting disk in RAC?

How do I restore my OCR and voting disk?

Connect to ASM instance and set ASM parameter asm_diskstring. Create REDO disk group using the metadata backup script we created earlier. Copy SQL commands, which are related to REDO disk group from backup script, connect to ASM instance, then run the commands. Restore the OCR from backup done before.

Where do I find my OCR and voting disk?

What is OCR file in Oracle RAC?

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. The OCR is a shared file located in a cluster file system.

What will you do if OCR is corrupted?

Here, I lost all my OCR & Voting disk.

  1. Execute rootdelete.sh script from All Nodes.
  2. Execute rootdeinstall.sh from Primary Node.
  3. Run root.sh from Primary node.
  4. Run root.sh from all remaining nodes.
  5. Execute remaining configurations (ONS,netca,register required resources)

How do I backup my OCR and voting disk?

How to Backup OCR and Voting Disk

  1. OCR Dumps. Oracle provides an utility ocrconfig to export OCR data to a dump file like this:
  2. OCR Backups. Since 11g (11.1), the clusterware backs up OCR automatically every 4 hours by Cluster Ready Services Daemon (CRSD).
  3. Use dd Command.
  4. Rely on OCR Backups.

How do I restore my RAC voting disc?

Restore Loss of All Vote Disks

  1. Current Status of OCR/VOTE DISK.
  2. Backup OCR.
  3. Simulate VOTE DISK corruption.
  4. Reboot both nodes in order to see corruption << This step is not mandatory.
  5. Restore loss of all Voting disk. A. Stop CRS on all the nodes. B. Start CRS in exclusive mode only. C. Create New Diskgroup.
  6. Check Cluster Status.

How do I fix a corrupted voting disc?

How do I find my master node in RAC?

Identify Master node in RAC cluster

  1. Grep occsd Log file. [oracle @ tadrac1]: /u1/app/../cssd >grep -i “master node” ocssd.log | tail -1.
  2. Grep crsd log file. [oracle @ tadrac1]: /u1/app/../crsd>grep MASTER crsd.log | tail -1.
  3. Query V$GES_RESOURCE view.
  4. ocrconfig -showbackup. The node that store OCR backups is the master node.

How do I check my voting disk?

Check the status and verify voting disk location :- [oracle@rac1 ~]$ crsctl query css votedisk ## STATE File Universal Id File Name Disk group — —– —————– ——— ——— 1. ONLINE 9789b4bf42214f8bbf14fda587ba331a (/dev/oracleasm/disks/ASMDISK2) [DATA1] Located 1 voting disk(s).

What is node eviction in Oracle RAC?

A node eviction is done when a heartbeat indicates that a node is not responding, and the evicted node is re-started so that it can continue to partiipate in the cluster. Reason for RAC node evictions. There are many reasons for a RAC node eviction.

How do I open an OLR file?

If you cannot open your OLR file correctly, try to right-click or long-press the file. Then click “Open with” and choose an application. You can also display a OLR file directly in the browser . Just drag the file onto this browser window and drop it.

Where can I find the OLR backup location?

The default backup location for the OLR is in the path Grid_home/cdata/host_name. To view the contents of the OLR backup file: To change the OLR backup location:

How do I display OLR content on the local node?

You can display the content of OLR on the local node to the text terminal that initiated the program using the OCRDUMP utility, as follows: You can perform administrative tasks on OLR on the local node using the OCRCONFIG utility. Oracle recommends that you use the -manualbackup and -restore commands and not the -import and -export commands.

Is OLR file shared between nodes in CRS?

Every node has its own dedicated OLR file. (not shared between the nodes). As OCRs files are present in ASM diskgroup, While starting the CRS, it wont be able to Access OCR file to find the cluster resource information.