121 Tape streaming is not happening while performing RMAN tape backup. On investigation, you find th
2015-11-26 23:54
691 查看
121
Tape streaming is not happening while performing RMAN tape backup. On investigation, you find that it is
not because of the incremental backup or the empty file backup and that RMAN is sending data blocks to
the tape drive fast enough.
What could be a solution to make tape streaming happen during the backup?
A. Configure backup optimization
B. Configure the channel to increase MAXOPENFILES
C. Configure the channel to increase the capacity with the RATE parameter
D. Configure the channel to adjust the tape buffer size with the BLKSIZE option
Correct Answer: C
Section: (none)
Explanation
Explanation/Reference:
Explanation:
In the ALLOCATE or CONFIGURE CHANNEL commands, the RATE parameter specifies the bytes/
second that are read on a channel. You can use this parameter to set an upper limit for bytes read so that
RMAN does not consume excessive disk bandwidth and degrade online performance. Essentially, RATE
serves as a backup throttle. For example, if you set RATE 1500K, and if each disk drive delivers 3 MB/
second, then the channel leaves some disk bandwidth available to the online system.
Tape streaming is not happening while performing RMAN tape backup. On investigation, you find that it is
not because of the incremental backup or the empty file backup and that RMAN is sending data blocks to
the tape drive fast enough.
What could be a solution to make tape streaming happen during the backup?
A. Configure backup optimization
B. Configure the channel to increase MAXOPENFILES
C. Configure the channel to increase the capacity with the RATE parameter
D. Configure the channel to adjust the tape buffer size with the BLKSIZE option
Correct Answer: C
Section: (none)
Explanation
Explanation/Reference:
Explanation:
In the ALLOCATE or CONFIGURE CHANNEL commands, the RATE parameter specifies the bytes/
second that are read on a channel. You can use this parameter to set an upper limit for bytes read so that
RMAN does not consume excessive disk bandwidth and degrade online performance. Essentially, RATE
serves as a backup throttle. For example, if you set RATE 1500K, and if each disk drive delivers 3 MB/
second, then the channel leaves some disk bandwidth available to the online system.
相关文章推荐
- [ios]AVPlayer 缓冲、 暂停通知和海报帧
- Android登录实例——布局文件
- 啊Ran讲微信开发(.net) :订阅号+自定义服务器(消息,关注事件)
- 自学android(1) activity
- IOS之KVC和KVO(未完待续)
- android 数字进度条--NumberProgressBar
- 关于This Handler class should be static or leaks might occur的解决办法
- Android启用应用Service的过程(Lollipop)
- Android-Overview Screen
- Swift----UIView的初建(部分方法的细致解释)
- 6个值得推荐的Android开源框架简介
- objective-c 关键字和概念
- iOS开发,EALayout 无需反复编译,可视化实时界面,告别Storyboard AutoLayout Xib等等烦人的工具
- Unity中的分层射线检测
- Android AndroidProgressLayout:加载页面遮挡耗时操作任务页面
- iOS音频流播放、后台播放、远程控制、锁屏封面等总结
- Objective-C 字符串
- Hybrid APP
- 【(Yahoo Labs)可扩展分解机(FM)】《Birds, Apps, and Users: Scalable Factorization Machines》By Erheng Zhong and
- ios即时通讯客户端开发之-mac上搭建openfire服务器