Performance Tuning Data

Type of data gathered:

• Cumulative statistics:(自从instance启动以来的的数据，累加值)
  • -Wait events with time information
  • -Time model（基于时间模型的比较）
• Metrics:Statistics rates（度量指标）
• Sampled statistics:Active session history(样本指标)
  • Statistics by session
  • Statistics by SQL
  • Statistics by service
  • Other dimensions