Performing Oracle Advanced Recovery - OCP: Oracle Database 12c Administrator Certified Professional - page 326

The OSB Components
The OSB architecture consists of four main components:
The Administrative Server This server is responsible for starting and stopping backup or
recovery jobs within a defined domain. The administrative server software can run on a
host where other applications are running; it is not required to have a dedicated server.
The Media Server This server houses the libraries that you will be backing up to, includ-
ing tape drives or tape libraries.
The Client The client consists of one or more hosts where data will be backed up. The cli-
ent may or may not have Oracle Database running on it.
The Hosts Any physical server that is running the administrative server, a media server,
or a client is considered a host.

The OSB Domain
The OSB domain is a logical collection of hosts that is defined for the purposes of OSB.
Each domain is a logically separated entity. For example, you might have a test domain
and a production domain that are separated logically, even if they share common physical
infrastructures. The test domain cannot access the hosts in the production domain. Thus,
depending on the configuration of the domain, you would likely not be able to restore
backups from the production domain to the test domain.
A typical OSB domain might consist of an administrative server, a media server with a
tape drive attached, and three clients, for a total of five individual hosts.

The OSB Daemons
Various daemon processes will be running on the hosts within the OSB domain, as shown
in Table 7.6.

TABle 7.6 OSB daemons and their descriptions

Daemon Name Description

Service daemon This daemon provides general services to OSB on the different

hosts in the OSB domain.

Schedule daemon This daemon supports the OSB scheduler on the

administrative server.

Index daemon This daemon manages the backup catalog on the

administrative server.