On Mon, Nov 5, 2018 at 4:26 PM, Naoki Yotsunaga wrote: >>2) it consumes system resources >While the system is running, you are always sampling system information, do >not you? Like Oracle ASH.
I don’t understand well how sampling is used. In which scene do you use the sampling? Or is it both scenes? Or is it a different scene? A) Perform sampling in order to obtain information on the entire DB while DB is in operation. B) I know roughly the process to be late. When investigating the reason for delaying the processing, sampling is performed on the processing. --------------------------- Naoki Yotsunaga