ocp-145

QUESTION NO: 145？

When performing an online backup, what is the proper order of the following steps?

a. Issue the alter database end backup command.

b. Back up the archived redo logs.

c. Issue the alter database begin backup command.

d. Back up the database files.

e. Determine the beginning log sequence number.

f. Determine the ending log sequence number.

g. Force a log switch with the alter system switch logfile command.

A. a, b, c, d, e, f, g

B. c, d, a, b, e, g, f

C. f, d, b, g, a, c, e

D. e, c, d, a, g, f, b

E. a, f, b, g, e, c, d

Answer: D

执行联机备份时，以下步骤按正确的顺序是什么？

a. Issue the alter database end backup command. 发出改变数据库终止备份命令。

b. Back up the archived redo logs. 备份归档重做日志。

c. Issue the alter database begin backup command. 发出改变数据库开始备份命令

d. Back up the database files. 备份数据库文件。

e. Determine the beginning log sequence number.确定起始的日志序列号。

f. Determine the ending log sequence number. 确定结束的日志序列号。

g. Force a log switch with the alter system switch logfile command. 改变系统切换日志文件命令强制进行日

志切换

D. e, c, d, a, g, f, b

确定起始的日志序列号。发出改变数据库开始备份命令。 备份数据库文件。发出改变数据库终止备份命令。

改变系统切换日志文件命令强制进行日志切换。确定结束的日志序列号。备份归档重做日志。