問題文
Before touching any parameter, a performance engineer is told to write down what the exercise has to achieve. According to the documented method, how should that objective be stated?
選択肢
- As a ratio that is computed from the instance counters such as lifting the buffer cache hit ratio above ninety percent and holding it there.
- As a business result that carries a number and a window such as posting the accounts of one million customers within three hours.
- As a list of parameters that will be changed such as increasing the shared pool and the buffer cache by a fixed number of megabytes.
- As a rank of the wait events that were seen such as removing the first three entries from the latest report.