[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
posted @ 2013-06-03 14:18  ArcerZhang  阅读(98)  评论(0编辑  收藏  举报