backup oracle

What Is Oracle Secure Backup?

Oracle Secure Backup supplies reliable data protection through file system backup to

tape. The Oracle Secure Backup SBT interface enables you to use Recovery Manager

(RMAN) to back up Oracle databases. All major tape drives and tape libraries in SAN,

Gigabit Ethernet, and SCSI environments are supported.

Oracle Secure Backup Features

Oracle Secure Backup enables you to do the following:

Centrally manage tape backup and restore operations of distributed,

mixed-platform environments (see

Oracle Secure Backup Installation Guide

for

supported machine architectures). You can access local and remote file systems

and devices from any location in a network without using NFS or CIFS.

Back up to and restore data from Oracle Cluster File System (OCFS) on Linux and

Windo ws.

Use wildcards and exclusion lists to specify what you want to back up.

Perform multilevel incremental backups.

Duplex database backups so that the same data stream goes to multiple devices.

You can specify different media families or devices for each copy of the data.

Create backups that span multiple volumes.

Optimize tape resources with automatic drive sharing.

Restore data rapidly. Oracle Secure Backup uses direct-to-block positioning and

direct access restore to avoid unnecessarily reading tape blocks to locate files.

Oracle Secure Backup maintains a record of the tape position of all backup data in

its catalog for rapid retrieval.

Maintain security and limit the users who are authorized to perform data

management operations. By default, SSL is used for authentication and

communication between hosts in the administrative domain.

Oracle Secure Backup and Recovery Manager

Recovery Manager (RMAN)

is an Oracle Database-specific backup and recovery

utility. RMAN is a built-in part of Oracle Database and backs up, restores, and recovers

database files regardless of the type of disk storage used for these files.

RMAN knows and applies the complex rules that must be followed to recover Oracle

databases. If your database backup strategy needs storage resources other than local

disk, then you must use RMAN in conjunction with a general-purpose network

backup tool such as Oracle Secure Backup.

Oracle Secure Backup can back up all types of files on the file system. Although Oracle

Secure Backup has no specialized knowledge of database backup and recovery

algorithms, it can serve as a media management layer for RMAN through the

SBT

interface

. In this capacity, Oracle Secure Backup provides the same services for RMAN

as other supported third-party SBT libraries. Oracle Secure Backup is better integrated

with Oracle Enterprise Manager, however, than other media managers.

Tab le 1–1

describes differences between RMAN and Oracle Secure Backup in terms of

the type of data backed up and the type of media used for backup storage.

1-2

Oracle Secure Backup Re ference

What Is Oracle Secure Backup?

Table 1–1 Differences Between Oracle Secure Backup and RMAN

Type of Backup

Oracle Secure Backup

Recovery Manager

Type of Data

Storage

Backup and Restore

Oracle datafiles, control files, and

Tape Yes (only with RMAN) Yes (only through

archived redo logs

supported SBT interface)

Oracle datafiles, control files, and

Disk No Yes

archived redo logs

Non-database files on the file system Tape Yes No

Non-database files on the file system Disk No No

See Also:

Oracle Database Backup and Recovery Basics

to learn about

Recovery Manager

Oracle Secure Backup Interfaces

Figure 1–1

shows the interfaces that you can use to access Oracle Secure Backup.

Figure 1–1 Interfaces to Oracle Secure Backup

Web tool

SBT

Oracle

rman obtool

Secure

Backup

Database

File system

operations

Users interact with Oracle Secure Backup by means of one of the following tools:

Oracle Secure Backup Web tool

The Oracle Secure Backup Web tool is a browser-based GUI that enables you to

configure an administrative domain, manage the backup and restore of file system

data, and browse the backup catalog.

The Web tool utilizes an Apache Web server, which runs on the administrative

server. As explained in

"Using the Web Tool"

on page 3-2, you can access the Web

tool from any Web browser that can connect to this server.

Oracle Secure Backup command-line interface (

obtool

)

Oracle Secure Backup provides a command-line program called

obtool

as an

alternative to the Web tool. You ca n log in to the administrative domain through

obtool

to back up and restore file system data and to perform configuration and

administration tasks.

As explained in

"Using obtool"

on page 3-8, you can run the

obtool

utility on any

host in the administrative domain on which Oracle Secure Backup is installed.

Oracle Enterprise Manager Database Control and Grid Control

Introduction to Oracle Secure Backup

1-3

Oracle Secure Backup and NDMP

Oracle Enterprise Manager is a set of GUI-based tools for managing the Oracle

environment. You can use Enterprise Manager to schedule and perform RMAN

backups through the Oracle Secure Backup SBT interface. You can also perform

administrative tasks such as managing media and devices within the Oracle

Secure Backup administrative domain. The Enterprise Manager console includes a

link to the Oracle Secure Backup Web tool.

As explained in

"Using Oracle Enterprise Manager"

on page 3-8, you can use

Enterprise Manager Database Control to back up a database on the administrative

server. You can run Enterprise Manager Grid Control on any database host within

the administrative domain and use this interface to manage all database backup

and restore operations.

Recovery Manager command-line interface (

rman

)

You can use the RMAN command-line interface to configure and initiate backup

and restore operations that use the Oracle Secure Backup SBT interface. The

RMAN utility is located in the

bin

subdirectory of an Oracle home.

As explained in

"Interfaces for Managing Database Backup and Recovery"

page 6-2, you can run the RMAN command-line client on any database host so

long as it can connect to the target database. For RMAN to make backups to Oracle

Secure Backup, the Oracle Secure Backup SBT library must reside on the same host

as the target database.

See Also:

Chapter 3, "Getting Started"

for an orientation to the interfaces to

Oracle Secure Backup

Oracle Enterprise Manager Administrator's Guide

and the Enterprise

Manager online help to learn how to use Enterprise Manager

Oracle Secure Backup Reference

to learn about

obtool

commands

Oracle Database Backup and Recovery Basics

to learn about the

Recovery Manager command-line interface

Oracle Secure Backup and NDMP

The

Network Data Management Protocol (NDMP)

defines a common architecture for

backups of file servers on a network. NDMP specifies the format and means of

transmission of messages and payload data. NDMP is an open standard protocol that

is promoted and supported by industry vendors.

NDMP enables a centralized backup application, which is called the

Data

Management Application (DMA)

, to back up and restore file servers that run on

different platforms. NDMP is commonly used by

Network Attached Storage (NAS)

devices, also known as

filer

s, to perform backup and restore operations without

requiring backup software to be installed. This model is different from the classical

backup model, which requires the installation of backup software on each host.

The DMA manages backup and restore operations by establishing a TCP/IP-based

control connection with an NDMP server. An NDMP server provides NDMP services,

which are the NDMP interfaces to the storage devices. The

data service

transfers data

to and from the primary disk storage, whereas the

tape service

transfers data to and

from secondary storage such as a tape drive.

With NDMP, network congestion is minimized because the data path and control path

are separated. Data transfer can occur locally—from file servers directly to and from

tape drives—while management occurs centrally.

1-4

Oracle Secure Backup Re ference

Administrative Domains

Oracle Secure Backup uses NDMP for data transfer and remote control of tape drives

and tape libraries. Thus, Oracle Secure Backup supports devices connected to

Windows, Linux, and UNIX hosts with Oracle Secure Backup's internal NDMP server.

While Oracle Secure Backup leverages NDMP, it is transparent to users except when

backing up a NAS device that requires NDMP for optimal backup operations.

In addition to Windows, Linux, and UNIX hosts, Oracle Secure Backup supports

special-purpose appliances such as Network Appliance filers, Mirapoint message

servers, and DinoStor tape appliances. These appliances can be backed up locally or

remotely, but cannot perform the role of Oracle Secure Backup administrative server

because backup software cannot be installed on them.

Although Oracle Secure Backup uses NDMP, specific NAS devices utilizing NDMP

must still be tested and supported by Oracle Secure Backup. Refer to the device matrix

at the following URL for a list of supported NAS devices:

http://www.oracle.com/technology/products/backup/

See Also:

http://www.ndmp.org

to learn more about NDMP

Appendix A, "NDMP Usage Notes"

Administrative Domains

administrative domain

is a network of hosts that you manage as a common unit to

perform backup and restore operations. To configure Oracle Secure Backup, you need

to assign roles to each host in the domain. A single host can have one or more of the

following roles:

Administrative server

You can assign this role to a host in your administrative domain that contains a

copy of Oracle Secure Backup software. The administrative server maintains the

configuration data and catalogs for the domain (see

"Administrative Data"

page 1-7). An administrative domain has one and only one administrative server.

The administrative server runs the Oracle Secure Backup

scheduler

, which starts

and monitors backup and restore jobs within the administrative domain. You

choose your administrative server when you install Oracle Secure Backup. Note

that the administrative server can co-reside on a host with other applications or

function as a dedicated, single-purpose server.

Media server

You can assign this role to a host that has one or more secondary storage devices,

such as tape libraries or tape d rives, connected to it. An administrative domain has

one or more media servers.

Client

You can assign this role to a host whose locally-accessed data is backed up by

Oracle Secure Backup. An administrative domain has one or more client hosts.

Most hosts defined within the administrative domain are clients.

Figure 1–2

illustrates a sample Oracle Secure Backup administrative domain. In this

scenario, the domain includes five hosts: an administrative server, a media server with

attached tape library, and three clients. Two of the clients run Oracle databases; the

other client is a NAS appliance.

Introduction to Oracle Secure Backup

1-5

Administrative Domains

Figure 1–2 Administrative Domain with Five Hosts

Data Flow

Oracle Secure

Oracle

Backup Clients

Secure Backup

Oracle

NAS

Administrative

Secure Backup

Appliance

Server

Media Server

NDMP

UNIX Linux

Backup

Restore

Oracle

Secure

. . . . . .

Backup

. . . . . .

Linux

. . . . . .

Tape

Catalog

Library

Recovery

Manager

Oracle

Database

Control Flow

Windows

Recovery

Manager

Oracle

Database

Figure 1–3

illustrates a different Oracle Secure Backup administrative domain that

contains a single Linux host. This host assumes the roles of administrative server,

media server, and client. The host runs an Oracle database and has a tape library

locally attached.

Figure 1–3 Administrative Domain with One Host

Enterprise Manager

Database Control

Oracle Secure Backup

Web

Administrative Server,

Browser

Media Server, and Client

Linux

Tape

Backup

. . . . . .

Recovery

. . . . . .

Manager

Tape

Library

Restore

Oracle

Database

Offsite

Storage

1-6

Oracle Secure Backup Re ference

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