HA for Oracle VM Server is controlled by the extension properties that control the probing frequency. The default values of these properties determine the preset behavior of the fault monitor and are suitable for most Oracle Solaris Cluster installations. You can modify this preset behavior by performing the following actions:
Setting the interval between fault monitor probes (Thorough_probe_interval)
Setting the timeout for fault monitor probes (Probe_timeout)
Setting the number of times the fault monitor attempts to restart the resource (Retry_count)
The HA for Oracle VM Server fault monitor checks the domain status within an infinite loop. During each cycle, the fault monitor checks the domain state and reports either a failure or success.
If the fault monitor is successful, it returns to its infinite loop and continues the next cycle of probing and sleeping.
If the fault monitor reports a failure, a request is made to the cluster to restart the resource. If the fault monitor reports another failure, another request is made to the cluster to restart the resource. This behavior continues whenever the fault monitor reports a failure. If successive restarts exceed the Retry_count within the Thorough_probe_interval, a request is made to fail over the resource group onto a different node.