053-650

Which three tasks can be performed using a duplicate database? (Choose three.)
A. Testing the backup and recovery procedures
B. Testing the upgrade of an Oracle database to a new release
C. Testing the effect of an application changes on database performance
D. Continuously updating archive log files from the target database to support failover

此题考点是复制数据库的目的:
1.测试备份和恢复过程
2.测试数据库升级到新版本
3.测试应用程序对数据库上的性能的影响
4.创建一个备份数据库(DG 配置)
5.生成报表
D 错误,如果没配置成 DG 配置,是无法连续的从目标库更新归档,达到支持故障转移的目的的。

posted @ 2017-11-16 13:16  巴啦啦大魔王  阅读(77)  评论(0编辑  收藏  举报