Database Tuning (MOSC)

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v$iostat_file, et al. - what do these statistics measure?

edited Aug 16, 2013 8:26AM in Database Tuning (MOSC) 5 commentsAnswered
 Does anyone know looking at v$iostat_file, for instance, what the time frame of these statistics? Looking at the documentation, it just says "V$IOSTAT_FILE displays information about disk I/O statistics of database files (including data files, temp files, and other types of database files)....", but this must be a measurement of io for a time frame? 5 minutes, length of uptime?

My guess it is since DB startup, but it is not specifically stated!?

As a corollary question, assuming I am right, does anyone know how to get io stats < x minute?

Thanks - dn

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