OCP-1Z0-053-200题-128题-281

QUESTION 128

You are working on a 24X7 database. You want to design a backup strategy for your database that uses user

managed backups. You want to be able to perform all backups while the database remains online.

Which statement about performing user-managed backups in a 24x7 environment is true?

A. You must have change tracking enabled in your database

B. Your database must be running in NOARCHIVELOG mode

C. To back up a tablespace, it must be in backup mode

D. To back up a tablespace, it must first be taken offline

Answer: C

同281题：http://blog.csdn.net/rlhua/article/details/14496199

Explanation/Reference:

Section: Backup, Recovery & Recovery Manager (RMAN)