A reader, August 29, 2016 - 8:56 am UTC
But I could't get data from "V$ACTIVE_SESSION_HISTORY" .
so what's another way to seeing performance related database statistics.
August 29, 2016 - 12:18 pm UTC
"couldnt" ? Due to licensing ? or something else ?
Check out V$EVENT_HISTOGRAM, deltas in DBA_HIST_FILESTATXS, and consider doing some session tracing.