Veritas NetBackup™ for Oracle Administrator's Guide
- NetBackup for Oracle QuickStart
- Installing NetBackup for Oracle
- About linking Oracle RMAN with NetBackup for UNIX
- Linking Oracle RMAN with NetBackup on UNIX platforms
- Oracle policy configuration
- Preparing for NetBackup for Oracle configuration
- Instance management for an Oracle Intelligent Policy
- About Oracle Intelligent Policies (OIP)
- About script- or template-based Oracle policies
- About adding backup selections to an Oracle policy
- About configuring the run-time environment
- About creating templates and shell scripts
- About creating RMAN scripts manually
- Performing backups and restores of Oracle
- About NetBackup for Oracle backups
- About NetBackup for Oracle restores
- Redirecting a restore to a different client
- Using NetBackup for Oracle in a Microsoft Windows cluster environment
- Guided Recovery
- Troubleshooting Guided Recovery
- NetBackup for Oracle with Snapshot Client
- About NetBackup for Oracle with Snapshot Client
- How NetBackup for Oracle with Snapshot Client works
- About configuring Snapshot Client with NetBackup for Oracle
- Restoring NetBackup for Oracle from a snapshot backup
- About NetBackup for Oracle restores of volumes and file systems using snapshot rollback
- About configuring NetBackup for Oracle block-level incremental backups on UNIX
- About Snapshot Client effects
- About Oracle support for Replication Director
- Troubleshooting RMAN backup or restore errors
- Appendix A. Real Application Clusters
- Appendix B. Best practices for protecting Oracle RAC with NetBackup
- Appendix C. Deduplication best practices
- Appendix D. Snapshot Client support of SFRAC
- Appendix E. Script-based block-level incremental (BLI) backups without RMAN on UNIX and Linux systems
- Verifying installation requirements for BLI backups without RMAN
- Creating NetBackup policies for script-based BLI backup
- Creating notify scripts for BLI backups
- Performing backups and restores
- About troubleshooting backup or restore errors
- Appendix F. XML Archiver
- NetBackup for Oracle XML export and XML import
- About XML export templates and shell scripts
- Performing an XML export archive
- Restoring an XML export archive
- About redirecting a restore of an XML export archive to a different client
- Troubleshooting XML export or XML import errors
- Appendix G. Register authorized locations
How BLI works with NetBackup for Oracle (UNIX)
NetBackup supports BLI full backups and BLI incremental backups of Oracle databases.
BLI backup supports two types of incremental backups: differential and cumulative. Full, differential incremental, and cumulative incremental backups are specified as part of the policy schedule configuration. When a restore is performed, NetBackup restores an appropriate full backup. Then it applies the changed blocks from the incremental backups.
Restoring any of the incremental backup images requires NetBackup to restore the last full backup image and all the subsequent incremental backups. The restore process continues until the specified incremental backup image is restored. NetBackup performs this restore process automatically, and it is completely transparent. The media that stored the last full backup and the subsequent incremental backups must be available, or the restore cannot proceed.
Note that restoring a file rewrites all blocks in that file. The first subsequent differential incremental backup and or all subsequent cumulative incremental backups back up all the blocks in the restored file. After an entire database is restored, the first subsequent backup results in a full backup.
The restore destination can be a VxFS, UFS (Solaris), JFS (AIX), or HFS (HP-UX) file system. The destination VxFS file system does not need to support the Storage Checkpoint feature to restore files. However, a VxFS file system with the Storage Checkpoint feature is needed to perform BLI backups of the restored data.
This topic uses the following terms to describe BLI backups:
A backup in which NetBackup backs up each database file completely, not just data blocks that have changed since the last full or incremental backup.
Cumulative BLI Backup.
This type of backup is a backup of all the changed blocks in the database files since the last full backup. A cumulative BLI backup image contains only the data blocks of database files that changed since the last full backup. A cumulative BLI backup can reduce the number of incremental backup images that must be applied during a restore operation. This speeds up the restore process.
Differential BLI backup.
A backup in which NetBackup performs a backup of only those data blocks (within the database files) that changed since the last backup. The previous backup can be of type full, cumulative incremental, or differential incremental.
When NetBackup initiates BLI backups, it creates, manages, and uses the appropriate Storage Checkpoints of the filesystem(s) hosting the Oracle data file systems. These Storage Checkpoints identify and maintain a list of modified blocks.