Oracle Real Application Clusters (RAC)
In a Real Application Clusters (RAC) environment, many Oracle database instances exist on separate servers, each with direct connectivity to a single Oracle database. All the servers can run transactions concurrently against the same database. Should any single server or instance fail, processing continues on the surviving servers.
RAC supports all Oracle backup features that are available in exclusive mode, including online backups and offline backups of an entire database or individual tablespaces. Currently, only the NetBackup web UI has full RAC support for Oracle policies.
Note:
Any nodes of the Oracle RAC cluster that is used in backups, must be running a NetBackup client. The version should be the same version across the cluster. For Oracle RAC OIP support the NetBackup 8.3 client is required.