What is voting disk and OCR in 11gr2?

OCR: It created at the time of Grid Installation. It’s store information to manage Oracle cluster-ware and it’s component such as RAC database, listener, VIP,Scan IP & Services. Minimum 1 and maximum 5 copy of OCR is possible. Voting Disk: It manage information about node membership.

What is OCR and Voting disk?

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.

Where do I find my OCR and Voting disk?

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.

Is it possible to use ASM for the OCR and Voting disk?

Placing OCR and Voting Disk files on shared file systems is deprecated in favor of placing the files on Oracle ASM.

What is a voting disk?

What is a Voting Disk? – 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.

Why are there 3 voting discs?

The three voting disks configured also provide a method to determine who in the cluster should survive. For example, if eviction of one of the nodes is necessitated by an unresponsive action, then the node that has two voting disks will start evicting the other node.

What is difference between OCR and OLR in RAC?

ORACLE LOCAL REGISTRY(OLR) contains node-specific information required by OHASD . 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. Because at this point ASM instance would also be down.

How do I move my OCR and Voting disk 12c?

Relocating OCR File and Voting Disk to new Diskgroup

Step 1: Verify integrity of OCR File. First let’s check the integrity of the OCR files.
Step 2: Determine location of Voting Disks.
Step 3: Create new Diskgroup.
Step 4: Add OCR to +REDO.
Step 5: Add OCR to +REDO.

How do I migrate my OCR to voting disk?

How do I move OCR and voting disks in ASM?

How to Move OCR, Vote Disk File, ASM SPILE to new Diskgroup

Create New diskgroup(CRS) with suitable redundancy for OCR and Voting files.
Ensure that the new diskgroup is mounted on all cluster nodes.
Move OCR and Vote file from [Current diskgroup] to [CRS].

What is voting disk why its required?

Voting disk is a file that manages information about node membership.It is located on the shared cluster system or a shared raw device file or Oracle ASM(11gr2 onwards) . Its primary purpose is to help in a situation where the private network communication fails.

What is OCR and OLR in RAC?

What is voting disk and OCR in 11gr2?