average time in oracle
The IO timing results showed that the average read time dropped from 0.279 milliseconds to 0.264 milliseconds per read, the major change being in the average write time which dropped from an average of 5.646 milliseconds to 1.324 milliseconds.ou may also want to consider information provided by Oracle MOSC in that you  can find out the average time taken for I/O from AVGIOTIM in V$FILESTAT. This, and many other Oracle performance metrics are discussed in my book Oracle Tuning by Rampant TechPress.