- 5.1K All Categories
- 9 Introduce Yourself!
- 325 Community Feedback - NEW! (No Product Questions)
- 78 General Community Platform Concerns/Kudos/Feedback
- 63 Community Platform Bug Reports
- 70 How Do I Use the Community?
- 16 Where is the...? (Community Platform Locations)
- 13 Ideas and Suggestions for the Community Platform
- 65 Personal Document & Blog Archive
- 2 Community Programs
- 2 Get-Togethers
- 4.7K Certification Community
- 4.6K Certification Community Discussions
- 20 Oracle Certified Master Profiles
- 26 Oracle Database 12c Administrator Certified Master Profiles
- 48 Visual Builder Cloud Service
Voting Disk Basic Concept in Oracle RAC Database
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.
- - If the disk is not updated in a short timeout period, the node is considered unhealthy and may be rebooted to protect the database.
- - 3 node clusters (Node1, Node2, Node3) are present in cluster ware.
- - DB, Vote Disk and OCR Disk are present on Shared Storage.
- - All three Nodes will register their heartbeats to voting disk
Query to check the status of Voting Disk
- - Voting disk is created on shared storage
- - It is created by oracle clusterware installation process
- - OCR disk will also get created by clusterware installation process
- - When any node is not able to send a heartbeat to the voting disk, then it will reboot itself.
- - For high availability, Oracle recommends that you have a minimum of three voting disks.
- - We must have an odd number of disks.