053336

You want to make sure that your database backup does not exceed 10 hours in length. What
command would you issue that would meet this condition?
A. backup database plus archivelog;
B. backup database plus archivlog until time 10:00;
C. backup database plus archivelog timeout 10:00;
D. backup database plus archivelog duration 10:00;
E. backup database plus archivelog timeout 10:00;

 

这个有点问题实验后只有backup duration 10:00 database;命令有效

https://www.linuxidc.com/Linux/2011-09/42734p2.htm

为了帮助减少RMAN备份对其他进程的整体I/0影响，RMAN提供了backup命令的duration 参数。 Duration 参数类似与闹钟，如果备份运行时间超过指定的持续时间，RMAN将取消备份。 如：

Backup duration 00:30 database;

 

注意事项： 不可以使用backup database plus archivelog命令。