Which two are prerequisites for running the I/O calibra…

Which two are prerequisites for running the I/O calibration tool? (Choose two.)

Which two are prerequisites for running the I/O calibration tool? (Choose two.)

A.
The database must be in MOUNT state.

B.
The database should be opened in restricted mode.

C.
For determining latency time, the STATISTICS_LEVEL parameter must be set to TYPICAL or ALL.

D.
The disks to be tested must be configured to use asynchronous I/O for data files.

E.
The database instance must be started using an SPFILE.



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