[bbk5197]第75集 第9章 -数据库性能维护 02
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