dbcc ha_admin includes the rollback_failover and rollback_failback options. Use these dbcc options as a last resort; only System Administrators who are knowledgeable about the high availability system should issue them.
These options allow you to roll back the steps performed by:
A fail over that did not complete because of either a problem with the high availability system (for example, all the disks were not available during fail over, so the companion mark all databases as suspect) or because the secondary companion crashed during fail over.
A sp_companion...prepare_failback command that did not complete because of either a problem with the high availability system or because the primary companion did not restart during failback.
There are platform-specific steps you must perform before you issue either dbcc ha_admin rollback_failover or rollback_failback. See the configuration chapter for your platform in this manual for information.
