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NetVault Plug-in for Oracle 10.0.5 - User Guide

Introducing Dell™ NetVault™ Backup Plug-in for Oracle® Defining a backup strategy Installing and removing the plug-in Configuring the plug-in Backing up data Using the Oracle® Flashback Database Restoring data
Restoring and recovering data: an overview Performing User Managed restores Using advanced User Managed restore procedures Performing RMAN restores Using RMAN types of recovery in a non-RAC environment Using advanced procedures with RMAN restores
Maintaining the Recovery Catalog Using the RMAN CLI Using the Plug-in with Oracle® RAC Using the Plug-in in a failover cluster environment Using the plug-in with Oracle® Data Guard Troubleshooting Glossary

Oracle RACs: an overview

Oracle® defines its Real Application Clusters (RAC) option as “support for the transparent deployment of a single database across a cluster of servers, providing fault tolerance from hardware failures or planned outages. Oracle RAC running on clusters provides Oracle’s highest level of capability in terms of availability, scalability, and low-cost computing. Oracle RAC supports mainstream business applications of all kinds. Support includes online transaction processing (OLTP), decision support systems (DSS), and Oracle’s unique ability to support mixed OLTP/DSS environments. Support also includes packaged products such as SAP, PeopleSoft, Siebel, and Oracle E*Business Suite, as well as custom applications.”
Plug‑in for Oracle provides support for a limited number of Oracle versions and platforms in a RAC environment. The installation, configuration, backup, and restore procedures differ in a multi-instance RAC environment. This section of the guide offers specifics on how the plug-in operates in an Oracle RAC environment. It only points out the differences between the setup and usage of the plug-in in a multi-instance RAC environment vs. a single-instance or traditional non-RAC environment.
 
* 
IMPORTANT: Unless outlined in the sections that follow, backups and restores performed with the plug-in for multi-instance RAC databases are the same as backups and restores performed with single-instance databases.
For a list of supported Oracle versions and platforms in a RAC environment, see the Dell NetVault Backup Compatibility Guide.

Recommended additional reading

Dell recommends that the following Oracle® RAC documentation be readily available for reference when setting up and using the plug-in in a RAC environment.
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Oracle Clusterware and Oracle Real Application Clusters Administration and Deployment Guide
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Overview of Oracle Real Application Clusters Management Tools
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Starting and Stopping Instances and Oracle Real Application Clusters Databases
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Oracle Clusterware Command-Line Reference
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Oracle 11.2: http://download.oracle.com/docs/cd/E11882_01/rac.112/e16795/toc.htm
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Oracle 11.1: http://download.oracle.com/docs/cd/B28359_01/rac.111/b28254/toc.htm
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Oracle 10.2: http://download.oracle.com/docs/cd/B19306_01/rac.102/b14197/toc.htm
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Oracle 10.1: http://download.oracle.com/docs/cd/B14117_01/server.101/b10825/toc.htm
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Oracle Database Administrator’s Guide, using ASM
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Oracle 11.2: http://download.oracle.com/docs/cd/E11882_01/server.112/e17120/toc.htm
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Oracle 11.1: http://download.oracle.com/docs/cd/B28359_01/server.111/b28310/toc.htm
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Oracle 10.2: http://download.oracle.com/docs/cd/B19306_01/server.102/b14231/storeman.htm#g1040709
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Oracle 10.1: http://download.oracle.com/docs/cd/B14117_01/server.101/b10739/toc.htm
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Oracle Database Utilities, ASM Command-Line Utility
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Oracle 11.2: http://download.oracle.com/docs/cd/E11882_01/server.112/e16536/toc.htm
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Oracle 11.1: http://download.oracle.com/docs/cd/B28359_01/server.111/b28319/toc.htm
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Oracle 10.2: http://download.oracle.com/docs/cd/B19306_01/server.102/b14215/asm_util.htm#SUTIL016
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Oracle 10.1: http://download.oracle.com/docs/cd/B14117_01/server.101/b10825/toc.htm

Defining a deployment strategy

Deploying Plug‑in for Oracle in a multi-instance database environment is almost identical to a single-instance database environment except that RMAN-based backups are the only available backup method for RAC databases. The plug-in is installed on one of the nodes that hosts one of the instances for the RAC-enabled database. All RMAN-based backups and restores are performed from this single installation of the plug-in. The following sections detail how the plug-in performs RMAN backups and restores in a RAC environment.
RMAN backup process for RAC environment
Figure 4. RMAN backup process for RAC environment
1
You define the backup job in the NetVault Backup WebUI.
2
Plug‑in for Oracle converts the job definition into the corresponding RMAN backup commands.
3
The RMAN runs the backup commands, which read data from the Oracle® database datafiles.
4
The RMAN uses the Oracle Media Management API to store the backup on the backup device managed by the NetVault Backup Server.
5
The RMAN stores the backup metadata in the Recovery Catalog repository.

RMAN restore process for RAC environment

Figure 5. RMAN restore process for RAC environment
1
You define the restore job in the NetVault Backup WebUI.
2
Plug‑in for Oracle converts the job definition into corresponding the RMAN restore and recovery commands.
3
The RMAN reads the backup metadata from the Recovery Catalog repository.
4
The RMAN uses the Oracle® Media Management API to read the backup from the backup device managed by the NetVault Backup Server.
5
The RMAN restores the datafiles to the Oracle server and recovers the database.
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