Use the oakcli configure vm command to configure high availability services for your virtual machines.
A system that is highly available is designed to provide uninterrupted computing services during essential time periods, during most hours of the day, and during most days of the week throughout the year. Reliability, recoverability, timely error detection, and continuous operations are primary characteristics of a highly available solution. Two essential parts of high availability are automatic restart and failover.
Unless you are using local repositories, you can set high availability options for your virtual machines. High availability options identify the node where the virtual machine should be started by default and whether the virtual machine should be failed over to the other node. Failover can occur if the node where the virtual machine is already running fails or if the preferred node is not available when the virtual machines attempt to start.
Configuring Automatic Restart for High Availability
A virtual machine automatically restarts after a hardware or software failure or whenever your database host computer restarts. Use the oakcli configure vm command to start a virtual machine on a preferred node by using the-prefnode option.
Configuring Failover for High Availability
Configuring failover provides high availability by enabling a virtual machine to restart on the other node after an unplanned failure, without requiring manual intervention. Use the command oakcli configure vm with the -failover option to configure fail over from one node to another.