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Using Oracle Recovery Manager and Dell/EMC Storage

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The disk content is first conditioned by putting the Oracle database (or tablespace files) into hot ... leading backup software applications through RMANs Media Management Library application programming ...

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DELL POWER SOLUTIONS Reprinted from Dell Power Solutions, February 2006. Copyright © 2006 Dell Inc. All rights reserved. February 2006 18 DISASTER RECOVERY M any IT departments have implemented user- managed backups for database as well as enterprise infrastructure software and data. During the user-managed backup process, database administrators (DBAs)  use raw data backup tools to directly back up the disk content holding Oracle data. The disk content is first conditioned by putting the Oracle database (or tablespace files)  into hot backup. Putting the database into hot backup causes the Oracle server to perform checkpoints on different tablespaces as part of the disk data conditioning. These checkpoints can affect the production performance level. Use of fast, storage-based, point-in-time logical replication helps to minimize the time required to copy the conditioned       Oracle disk data. Integrating this type of replication     into the user-managed backup process can help to minimize the duration of the backup and its impact on applications service. Oracle® Database 10 g includes Recovery Manager g (RMAN), a utility for creating backups and for restoring and recovering an Oracle database. RMAN works directly through the database management systems engine to secure the appropriate data for use in its backup process. As such, RMAN does not require the preconditioning of the Oracle data stored on disk through mechanisms such as hot backup. However, RMAN competes for system resources with production user activities, which can impact production performance for the entire duration that RMAN needs to complete the backup task. The combination of the two approaches, user-managed backup and RMAN, offers an option that can help minimize     the service-level impact as well as the duration of the disruption. Starting with use ...

Source: www.dell.com

 

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