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多选题
Which three statements correctly describe the features of the I/O calibration process?()
A

Only one I/O calibration process can run at a time

B

It automates the resource allocation for the Automated Maintenance Tasks

C

It improves the performance of the performance-critical sessions while running

D

It can be used to estimate the maximum number of I/Os and maximum latency time for the system

E

The latency time is computed only when the TIMED_STATISTICS initialization parameter is set to TRUE


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