OCP-1Z0-053-V12.02-547题

547.You backed up the database at 8 a.m. today using an online backup. Accounting made a large

change to the underlying data between 10 a.m. and noon. Which of the following actions would ensure

that the changes could be recovered using the 8 a.m. backup?

A. Create a manual incremental online database backup.

B. Back up all the archived redo logs generated since the 8 a.m. backup.

C. Create a brand-new backup after all the changes have been applied.

D. There is no way to make the changes recoverable based on the 8 a.m. backup.

E. Perform an online backup of the tablespace(s) that contained changed data.

Answer: B

答案解析：

在8点进行一次备份，在10点有很多业务，如果要恢复，且要包含这些变化，则需要8点的备份以及8点到中午的归档日志和在线日志。