Examine the backup requirement for your company: 1) Every Sunday, a backup of all used data file blocks is performed. 2) Every Wednesday and Friday, a backup of all the changed blocks since last…

Question

Options

• Alevel 0 backup on Sunday, cumulative incremental backup on Wednesday and Friday, and
• Blevel 0 backup on Sunday, differential incremental backup on Wednesday and Friday, and
• Cfull database backup on Sunday, level 0 backup on Wednesday and Friday, and cumulative
• Dfull database backup on Sunday, level 0 backup on Wednesday and Friday, and differential

• A
  71% (15)
• B
  14% (3)
• C
  5% (1)
• D
  10% (2)

Explanation

Multilevel Incremental Backups RMAN can create multilevel incremental backups. Each incremental level is denoted by a value of 0 or 1. 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 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. A level 1 incremental backup can be either of the following types: A differential incremental backup, which backs up all blocks changed after the most recent incremental backup at level 1 or 0 A cumulative incremental backup, which backs up all blocks changed after the most recent incremental backup at level 0 Incremental backups are differential by default.

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