OCP认证052考题解析：1Z0-V8.02-第77题

OCP认证052考题解析：1Z0-V8.02-第77题，完整题库请点击这里联系老师咨询了解

77. You executed the following command to perform a backup of the USERS tablespace:

SQL> ALTER TABLESPACE users BEGIN BACKUP;

ALTER TABLESPACE users BEGIN BACKUP

*

ERROR at line 1:

ORA-01123: cannot start online backup; media recovery not enabled

What could be the reason for this error?

A.The MTTR Advisor is disabled.

B.The database is in NOARCHIVELOG mode.

C.The tablespace is already in backup mode.

D.The Flash Recovery Area is not configured.

Answer: B

对数据库进行热备，必须把数据库设置为archivelog 模式。

如果未处于archivelog 模式，需shutdown数据库，启动到mount状态进行修改。因此B是正确答案。