Oracle RMAN 11g Backup and Recovery (53 page)

Differences Between OSB and OSB Express

The following are the common features for Oracle Secure Backup and Oracle Secure Backup Express:

■ Integrated with RMAN for online tape backup and restore of Oracle Database

■ Backs up and restores file system data

■ Integrated with Oracle Enterprise Manager (Oracle Database 10
g
R2 and higher) These features are available only with Oracle Secure Backup:

■ Backs up Real Application Clusters (RAC) environments

■ Integrated with Oracle Enterprise Manager Grid Control (Oracle Database 10
g
R2

and higher)

■ Enables multiple tape drive usage within the backup environment

■ Provides Fibre-attached device support

■ Offers backup encryption to tape

■ Includes Oracle fast backup compression (Oracle Database 11
g
R1 and higher)

■ Supports ACSLS and vaulting

■ Features networked backup of distributed servers and/or tape devices

Backup Encryption

Oracle Secure Backup encryption is available for both RMAN and file system backup operations.

The data is encrypted on the server before transport over the network, or written to a locally attached tape device. Database data is encrypted after RMAN has passed the data through the
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Part II: Setup Principles and Practices

SBT to OSB. If the RMAN data from the SBT is encrypted, then no further encryption occurs.

Backup encryption is normally available only with the purchase of the Oracle Advanced Security Option (ASO).

Fast Database Backup Compression

Fast database backup compression is normally available only with the purchase of the Oracle Advanced Compression Option (ACO).

Oracle Secure Backup Cloud Module

The Oracle Secure Backup Cloud Module is independent of the OSB tape management editions.

The module has been qualified only with Amazon S3 (Simple Storage Service) for now, but it might be expanded to other cloud storage vendors in the future. The number of Oracle Secure Backup Cloud Module licenses depends on the number of RMAN channels for backup to the cloud and does not depend on the number of Oracle database backups. For example, four OSB

Cloud Module licenses could be used to back up two Oracle databases using two RMAN

channels for each or used to back up one Oracle database using four RMAN channels.

Oracle Secure Backup Interfaces

Figure 5-1 illustrates the interfaces you may use to access Oracle Secure Backup, described here:

■
Oracle Enterprise Manager Database Control and Grid Control
This is the preferred graphical user interface (GUI) for managing OSB. Most of OSB tasks can be performed via OEM. The OSB administrative server can be configured as a target in OEM Grid Control and can be used to perform file system backup and restore operations.

Oracle Secure

RMAN

Backup

FIGURE 5-1
OSB interfaces

Chapter 5: Oracle Secure Backup
117

■
Oracle Secure Backup Web tool
This interface is a browser-based GUI that enables you to configure an administrative domain, browse the backup catalog, manage backup and restore of file system data, and perform certain other tasks not possible in OEM. It exposes all functions of obtool. The Web tool employs an Apache web server running on the administrative server.

■
Oracle Secure Backup command-line interface (obtool)
This command-line program is the primary interface to OSB and is in the bin subdirectory of the OSB home. Using obtool, you may log into the administrative domain to back up and restore file system data as well as to perform configuration and administrative tasks. You may run obtool on any host within the administrative domain.

■
Recovery Manager command-line interface
The RMAN command-line interface may be used to configure and initiate database backup and restore operations for utilization of OSB. The RMAN utility is located in the bin directory of an ORACLE_HOME directory.

The RMAN command-line client will run on any database host, as long as the client is able to connect to the target database. The OSB SBT library must exist on the same host as the target database in order for RMAN to make backups using OSB.

Oracle Secure Backup Components

An administrative domain is a group of hosts managed as a common unit for performing backup and restore operations. When configuring OSB, roles are assigned to each host in the domain. A single host may consist of one or more of the following roles:

■
Administrative server
Starting and monitoring backup and recovery jobs is accomplished by the administrative server running within an administrative domain. The administrative server may also run other applications in addition to OSB.

■
Media server
Houses secondary storage devices such as tape drives or tape libraries.

At least one media server will be defined for each administrative domain.

■
Client
A host whose local data is backed up by OSB. One or more clients will be defined in each administrative domain. Most hosts in the administrative domain are clients.

Figure 5-2 illustrates an OSB administrative domain. The domain includes an administrative server, a media server with an attached tape library, three clients, and five hosts.

Figure 5-3 demonstrates an OSB administrative domain containing a single Linux host. This Linux host assumes the roles of administrative server, media server, and client. An Oracle database and a locally attached tape library are configured for the Linux host.