Your customer would like to use DBFS in their Exadata environment. They are asking you for the
key characteristic of DBFS on Exadata.
A.
DBFS in an Exadata environment is faster than an NFS mount system because of the Smart
Scan performance gains.
B.
Tens of thousands of files are the perfect use case for DBFS on Exadata.
C.
DBFS offers tremendous I/O bandwidth.
Explanation:
Answer is A
(Not B: large file count operations are problematic for DBFS)
Smart scan does not work with LOB columns, which is used on DBFS. So, I guess A is not corret.
I think A;
In Exadata (and elsewhere), DBFS file-systems can reside in ASM disks, so you can get the performance and availability features of ASM within your DBFS file-system.
It’s C.
I think answer is C because DBFS uses Infiniband Network so offers very high I/O bandwidth.
It is C.
yes, it’s ‘C’ DBFS doesn’t provide any smart scan but has I/O Bandwidth
Answer : C and I am agree with last four answer. The question is the key characteristic of DBFS on Exadata.
DBFS offers very high throughput file and therefore offers tremendous I/O bandwidth.
it’s true : DBFS in an Exadata environment is faster than an NFS mount system but it not depend with smart scan.
thanks.
C.
DBFS offers tremendous I/O bandwidth.