Prior to 11g R2, when the voting disk became unresponsive or inaccessible, to avoid split brain, the host was rebooted without waiting for the IO processes to complete. This reboot was usually initiated when there was either a communication (network related) failure with the other nodes in the cluster or the overloaded IO on the […]
Restore OCR disk In case of the loss of the ASM diskgroups storing the OCR and Voting disks, restoration will have to be done using the following steps. With the loss of these file the cluster will not start. The OCR backups are normally stored in the $GRID_HOME/cdata directory. Using these backups we should be […]
On a node which is part of the cluster after setting up the environment variables like the Oracle Base, Grid home, Path and ASM SID, run the addnode.sh script on the host. The script will first run a cluster verification pre-check to ensure that the storage, network , ssh, node readability, rpm check, etc.. prerequisites […]
When should Oracle Grid or RDBMS binaries be relinked? Read more ..