1Z0-497 · Question #80
Which two statements about multi section backup are true?
The correct answer is B. It supports incremental backups and image copies. D. For image copies, sections are backed up in parallel and recomposed at the end. https://docs.oracle.com/database/121/BRADV/rcmbckba.htm#BRADV380 Specifying Multisection Incremental Backups A multisection backup enables large data files to be divided into sections that can be backed up in parallel across multiple channels. This provides faster backup…
Question
Which two statements about multi section backup are true?
Options
- AIt is available only for full backups.
- BIt supports incremental backups and image copies.
- CBackup for each data file is divided into sections and is backed up in parallel.
- DFor image copies, sections are backed up in parallel and recomposed at the end.
How the community answered
(39 responses)- A5% (2)
- B85% (33)
- C10% (4)
Explanation
https://docs.oracle.com/database/121/BRADV/rcmbckba.htm#BRADV380 Specifying Multisection Incremental Backups A multisection backup enables large data files to be divided into sections that can be backed up in parallel across multiple channels. This provides faster backup performance and better recovery times. A multisection backup contains multiple backup pieces. During a multisection backup operation, RMAN writes to each backup piece, in parallel, by using a separate channel for each Multisection full backups of databases and data files are supported starting with Oracle Database 11g Release 1. Starting with Oracle Database 12c Release 1 (12.1), RMAN supports multisection incremental backups. Wherever applicable, RMAN also uses unused block compression and block change tracking while creating multisection incremental backups. When backup sets are used, you can create multisection full or incremental backups.
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