最新公告
  • 欢迎您光临IO源码网,本站秉承服务宗旨 履行“站长”责任,销售只是起点 服务永无止境!立即加入我们
  • Oracle AWR report in-depth analysis PDF 下载

    Oracle AWR report in-depth analysis PDF 下载

    本站整理下载:
    链接:https://pan.baidu.com/s/1_McZ2ITVCExevNEQBsqOXQ 
    提取码:9qhw 
     
     
    相关截图:
     
    主要内容:

    What is AWR?
    The AWR provides a set of tables into which snapshots of
    system statistics are stored. Generally these snapshots are
    taken on an hourly basis and include wait interface statistics,
    top SQL, memory, and I/O information that is cumulative in
    nature up to the time of the capture. The AWR report process
    takes the cumulative data from two snapshots and subtracts the
    earlier snapshot’s cumulative data from the later snapshot and
    then generates a delta report showing the statistics and
    information relevant for the time period requested. AWR is a
    more advanced version of the old Statspack reports that has
    been automated and made integral to Oracle’s automated
    tuning processes for the Oracle Database.
    AWR reports are run internally each hour and the fjndings
    are reported to the OEM interface. The user can use OEM
    or manual processes to create a full AWR report, in text or
    HTML format. These text or HTML reports are what we
    will be examining in this paper.
    What should you know before
    examining AWR reports?
    Before examining AWR reports, DBAs should be familiar
    with the basic wait events that an Oracle Database may
    encounter and the typical latches that may cause performance
    issues, plus be aware of what a typical performance profjle
    looks like for their particular system. Usually by examining
    several AWR reports from periods of normal or good
    performance, DBAs can acquaint themselves with the
    basic performance profjle of their database.
    Things to notice in the baseline reports include normal levels
    of specifjc wait events and latches and the normal I/O profjle
    (normal I/O rates and timings for the database fjles). Other
    items to look at are the number and types of sorts, the memory
    layout, and Process Global Area (PGA) activity levels.
    In order to be aware of what waits, latches, and statistics are
    signifjcant, it is suggested that DBAs become familiar with
    the Oracle Database Tuning guide and concepts manual.
    Tuning books by outside authors can also provide more
    detailed insight into Oracle Database tuning techniques
    and concepts.
    Take a top-down approach
    Unless you are looking for specifjc problems such as a known
    SQL issue, it is usually best to start with the top data in the
    AWR report and drill down into the later sections as indicated
    by the wait events and latch data. The fjrst section of an AWR
    report shows general data about the instance; look at Figure 1
    for an example header section.

     

     

    *** 次数:10600 已用完,请联系开发者***

    1. 本站所有资源来源于用户上传和网络,因此不包含技术服务请大家谅解!如有侵权请邮件联系客服!384324621@qq.com
    2. 本站不保证所提供下载的资源的准确性、安全性和完整性,资源仅供下载学习之用!如有链接无法下载、失效或广告,请联系客服处理,有奖励!
    3. 您必须在下载后的24个小时之内,从您的电脑中彻底删除上述内容资源!如用于商业或者非法用途,与本站无关,一切后果请用户自负!
    4. 如果您也有好的资源或教程,您可以投稿发布,成功分享后有★币奖励和额外收入!

    IO 源码网 » Oracle AWR report in-depth analysis PDF 下载

    常见问题FAQ

    免费下载或者VIP会员专享资源能否直接商用?
    本站所有资源版权均属于原作者所有,这里所提供资源均只能用于参考学习用,请勿直接商用。若由于商用引起版权纠纷,一切责任均由使用者承担。更多说明请参考 VIP介绍。
    提示下载完但解压或打开不了?
    最常见的情况是下载不完整: 可对比下载完压缩包的与网盘上的容量,若小于网盘提示的容量则是这个原因。这是浏览器下载的bug,建议用百度网盘软件或迅雷下载。若排除这种情况,可在对应资源底部留言,或 联络我们.。
    找不到素材资源介绍文章里的示例图片?
    对于PPT,KEY,Mockups,APP,网页模版等类型的素材,文章内用于介绍的图片通常并不包含在对应可供下载素材包内。这些相关商业图片需另外购买,且本站不负责(也没有办法)找到出处。 同样地一些字体文件也是这种情况,但部分素材会在素材包内有一份字体下载链接清单。
    IO源码吧
    一个高级程序员模板开发平台

    发表评论

    • 89会员总数(位)
    • 10650资源总数(个)
    • 74本周发布(个)
    • 8 今日发布(个)
    • 411稳定运行(天)

    提供最优质的资源集合

    立即查看 了解详情