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Run the Recovery Catalog database in ARCHIVELOG mode so that PIT Recovery is possible. |
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Full Backups only – When business requirements guarantee data protection up to the previous day, performing full backups on a daily basis should be sufficient. DBAs are only required to recover the database up to the point of the last full backup. |
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Full Backup and Archived Log Backups – When business requirements mandate PIT data protection but recovery time is not important, Full Backups coupled with Archived Log backups should provide the necessary protection. |
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Incremental Level 0 and Differential Incremental Level 1 and Archived Log Backups – When business requirements mandate PIT data protection and backups have to be as fast as possible, Incremental Level 0 and Differential Incremental Backup and Archived Redo Log backups is an ideal strategy. |
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Incremental Level 0 and Cumulative Incremental Level 1 and Archived Log Backups – When business requirements mandate PIT data protection and recovery time should be as fast as possible, Incremental Level 0 and Cumulative Incremental Level 1 and Archived Log backups are the best combination. |
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Tape (Backup to NetVault Backup Media) – This is the default option. When selected, RMAN opens an “SBT_TAPE” channel and writes the backup files to the backup media that is managed by NetVault Backup and specified in the Device options section of the Target tab. NetVault Backup can manage a wide range of backup devices, including disk-based media, VTLs, and tape drives, which lets you implement a Disk-to-Disk-to-Tape backup strategy. Even though FRA has been enabled for the database, it is not used to store backup recovery files. This is ideal for users who want to maintain a dedicated FRA for permanent files such as copies of the current Control File and online redo logs or Flashback logs. |
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Disk (Backup to FRA) – When selected, RMAN opens a DISK channel and only writes the backup files to the FRA. Storing the backup recovery files in the FRA provides the fastest restore possible with RMAN because RMAN can restore the files directly from the FRA without having to read files from backup media. Because the FRA is typically disk storage residing on the same local or shared storage as the datafiles, it does not provide complete protection against complete media failure, corruption, or disaster recovery. To ensure that the backup recovery files are stored in offsite storage, you can use the Both Tape and Disk or perform periodic Flash Recovery Area Backups to back up the backup recovery files stored in the FRA-to-backup media managed by NetVault Backup. |
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Both Tape and Disk (Backup to FRA then Backup FRA to NetVault Backup Media) – Implementing a Tape and Disk backup strategy provides the most protection with the fastest restores. When selected, RMAN opens a DISK channel and writes the backup files to the FRA followed by a backup of the backup recovery files stored in the FRA-to-backup media managed by NetVault Backup in the same backup job. This lets you perform the fastest recovery possible from isolated media failure and data corruption while providing offsite protection for complete media failure or disaster recovery. Selecting the Both Tape and Disk option will lengthen the duration of the backup job because RMAN must perform two types of backups in the same backup job. |
NOTE: The Flash Recovery Area feature is not available in Oracle 9i; using the Both Tape and Disk option with Oracle 9i might result in unexpected Oracle errors. |
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