Recovering HADB

If you have two active HADB nodes, you can configure two spare nodes (on separate machines), that can take over in case of failure. This is a cleaner method because backup and restore of HADB may result in stale sessions being restored.

For information on creating a database with spare nodes, see Creating a Database. For information on adding spare nodes to a database, see Adding Nodes. If recovery and self-repair fail, then the spare node takes over automatically.