Veritas NetBackup 8.1 for Oracle Administrator's Guide

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"VERITAS NetBackup 8.1 for Oracle Administrator's Guide，涵盖了UNIX, Windows, and Linux平台的Oracle数据库备份与恢复操作指南，更新日期为2017年9月20日。" VERITAS NetBackup 8.1是专为管理Oracle数据库备份和恢复设计的一款高效、可靠的备份解决方案。此版本支持多种操作系统，包括UNIX、Windows和Linux，旨在确保企业级Oracle环境的数据安全性。该管理员指南提供了详尽的操作步骤和最佳实践，帮助系统管理员在复杂的企业环境中实施有效的数据保护策略。在Oracle数据库备份方面，NetBackup 8.1提供了全面的功能，包括增量备份、差异备份、全量备份和永久增量备份。这些备份类型允许管理员根据业务需求和资源利用率选择最合适的备份策略。此外，NetBackup的智能政策制定功能使得设置和管理备份计划变得更为简单，它可以根据数据库活动、时间表和资源可用性自动调整备份任务。在恢复操作上，NetBackup 8.1支持快速、精确的Oracle数据库恢复。这包括单个表空间、数据文件甚至特定记录级别的恢复，确保最小化业务中断。同时，NetBackup的即时恢复特性允许在备份过程中直接从原始存储进行数据访问，极大地提高了恢复速度。 NetBackup 8.1还集成了一些高级特性，如介质管理、重复数据删除和数据加密，以优化存储效率并增强数据安全。媒体管理确保备份数据在不同介质上的安全存储和检索；重复数据删除通过去除冗余数据来节省存储空间；数据加密则保护备份数据免受未经授权的访问。此文档还指出，产品可能包含第三方软件，这些软件可能遵循开源或免费软件许可。用户在使用过程中应遵守相应的开源或免费软件许可条款，而Veritas的产品许可协议不会改变这些条款。用户可以参考随产品提供的第三方法律通知文档，或者访问Veritas官方网站获取更多信息。在法律条款方面，Veritas强调了其产品的版权归属，并列出了一系列与Veritas Technologies LLC及其关联公司在美和其他国家的注册商标。其他未提及的名称可能是各自所有者的商标。 VERITAS NetBackup 8.1为Oracle数据库管理员提供了一个强大的工具集，用于管理和保护关键业务数据。通过详细的操作指南，管理员可以充分利用NetBackup的功能，确保企业的数据安全和业务连续性。

Table 1-1

NetBackup for Oracle features (continued)

DescriptionFeature

An Oracle instance discovery service automatically polls the

clients throughout the NetBackup environment every five

minutes. The service collects the discovered instances in an

instance repository. The user can view the instances on the

NetBackup Administration Console or by using the nboraadm

command.

You can create the instance groups that each contain a set of

instances that are registered with a common set of credentials.

A default instance group can be created for the newly

discovered instances that are then automatically registered into

this group.

You select Oracle instances and instance groups to be part of

an Oracle backup policy. You can create the policy for the

default instance group to make sure that all newly created

instances are automatically protected.

Oracle DBAs can use the nboraadm command on the

NetBackup client to manage instances, instance groups, and

their credentials. This command is very useful in environments

where the Oracle credentials are known only by the DBAs and

not by the NetBackup administrators.

Oracle Instance

management

You can share the same devices and media that are used for

other backups or give Oracle exclusive use of certain devices

and media. NetBackup for Oracle can use the Media Manager,

disk, PureDisk storage units, etc.

Sharing the same storage

units that are used for other

file backups

From the NetBackup master server, you can schedule database

backups or start them manually for any client or instance. The

Oracle databases can also reside on the hosts that are different

from the devices on which NetBackup stores the backups.

Centralized and networked

backup operations

16Introduction

NetBackup for Oracle features

Table 1-1

NetBackup for Oracle features (continued)

DescriptionFeature

NetBackup provides the following graphical user interfaces for

client users and administrators:

■ Backup, Archive, and Restore user interface

■ NetBackup Administration Console for Java

■ NetBackup OpsCenter

NetBackup OpsCenter is the web-based graphical user interface

that is used to perform an Oracle Guided Recovery cloning

operation.

See “About OpsCenter Guided Recovery” on page 156.

A database administrator or NetBackup administrator can start

backup or restore operations for Oracle from the NetBackup

graphical user interface on the master server.

Graphical user interfaces

The NetBackup for Oracle database wizards can create backup

and recovery templates for script- or template-based Oracle

policies. You can launch the backup wizard and the recovery

wizard from the Backup, Archive, and Restore (BAR) interface.

The wizards generate platform-independent templates

containing the configuration information that the software uses

when it performs backups and restores.

The wizard-generated templates do not support all the features

native to Oracle. You may want to write a customized backup

or restore script in a scripting language that the operating

system defines. You can use a template as the base for a script.

Templates

Guided Recovery clones an Oracle database from a backup,

and simplifies the process of creating a new database from

backups of an existing database. Guided Recovery uses an

Oracle cloning wizard that executes on the OpsCenter graphical

user interface.

Oracle Guided Recovery

cloning

NetBackup for Oracle supports the parallel backup and restore

RMAN capabilities. For example, you can run more than one

tape device at a time for a single Oracle backup or restore.

This capability reduces the time necessary to complete the

operation.

Parallel backup and restore

operations

Compression increases backup performance over the network

and reduces the size of the backup image that NetBackup

writes to the storage unit.

Compression

17Introduction

NetBackup for Oracle features

Table 1-2

Oracle terms (continued)

DefinitionTerm

RMAN lets you create multilevel backups. RMAN can create multilevel

incremental backup. A value of 0 or 1 denotes each incremental level.

A level 0 incremental backup, which is the base for subsequent

incremental backups, copies all blocks containing data. You can create

a level 0 database backup as backup sets or image copies.

The only difference between a level 0 incremental backup and a full

backup is that a full backup is never included in an incremental strategy.

Thus, an incremental level 0 backup is a full backup that happens to

be the parent of incremental backups whose level is greater than 0.

The benefit to performing multilevel incremental backups is that you do

not back up all of the blocks all of the time. Incremental backups at a

level greater than zero (0) only copy the blocks that were modified.

Hence, the backup size can be significantly smaller and the backup

might require much less time. The size of the backup file depends solely

upon the number of blocks that are modified and the incremental backup

level.

Multilevel

incremental

backup

In a differential level 1 backup, RMAN backs up all blocks that have

changed since the most recent incremental backup at level 1 (cumulative

or differential) or level 0. For example, in a differential level 1 backup,

RMAN determines which level 1 backup is the most recent backup.

RMAN backs up all blocks that have been modified after that backup.

If no level 1 is available, then RMAN copies all blocks that have changed

since the base level 0 backup.

Differential

incremental

backup

In a cumulative level 1 incremental backup, RMAN backs up all blocks

that have changed since the most recent backup at level 0.

Cumulative incremental backups reduce the work that is needed for a

restore. The cumulative incremental backup ensures that you only need

one incremental backup from any particular level at restore time.

Cumulative backups require more space and time than differential

incremental backups, however, because they duplicate the work that

previous backups did at the same level.

Cumulative

incremental

backup

NetBackup for Oracle operation using the Oracle

Intelligent Policy

The Oracle Intelligent Policy feature lets you create a policy that specifies one or

more Oracle instances to be backed up. You manage instances in an instance

repository available on the NetBackup Administration Console. The instance

20Introduction

NetBackup for Oracle operation using the Oracle Intelligent Policy

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