Oracle 11G OCP 1Z0-053 156

（156）What is the effect of increasing the value of the ASM_POWER_LIMIT parameter?

A. The number of DBWR processes increases

B. The number of ASMB processes increases

C. The number of DBWR_TO_SLAVES increases

D. The rebalancing operation in an ASM instance completes more quickly,but can result in higher I/O overhead

答案：（D）

解析：

（ASM_POWER_LIMIT specifies the maximum power on an Automatic Storage Management instance for disk rebalancing.The higher the limit,the faster rebalancing will complete.Lower values will take longer,but consume fewer processing and I/O resources.

數值大再度平衡快，不過I/O開銷也大。選D）

來自 “ ITPUB部落格 ” ，連結：http://blog.itpub.net/17013648/viewspace-1258541/，如需轉載，請註明出處，否則將追究法律責任。