emergency monitoring面临的挑战: 1.sick systems 2.slow database -所有用户查询响应慢 -性能界面刷新数据慢 -吞吐量严重降低 3.因为内部资源竞争数据库hang住 -数据库不响应:无法登陆 -用户请求hang住 -性能界面不刷新 在常规登陆不能登陆时,emergency monitoring支持sysdba以诊断模式登陆数据库,执行一个快速.轻量级的分析,找出谁阻塞了数据库,以及为何hang住.这种连接方式不需要IO或其它全局资源. 在EM 1…

第三章 监控和诊断   本章涵盖以下几个主题:监测的方法,数据库的监测,apache的监测,forms的监测,并发管理器的监测,服务器的监测,网络的监测,其它的一些监测和诊断方法. 1.监测的方法:主要启用脚本来监测. 2.数据库的监测:alert.log日志非常重要.数据库的监听日志位于$TND_ADMIN目录下,如果监听遇到故障,我们可以在listener.ora设置追踪级别.如: TRACE_LEVEL_[LISTENER] = [OFF | USER | ADMIN | SUPPORT]…

SAP T CODE : Description (Program) V : Quickstart RKCOWUSL (RKCOWUSL)V+01 : Create Sales Call (SAPMV43A)V+02 : Create Telephone Call (SAPMV43A)V+03 : Create Sales Letter (SAPMV43A)V+11 : Create Direct Mailing (SAPMV43A)V+21 : Create Sales Prospect (S…

2014-09-06 Created By BaoXinjian…

Use the sophisticated management and monitoring features of the Oracle DatabaseDiagnostic and Tuning packs within Oracle Enterprise Manager that include theAutomatic Database Diagnostic Monitor (ADDM) and AWR. The above words comes from oracle offici…

catalogue . OSSEC . HashSentry: Host-Based IDS in Python . Afick . 检测流程 1. OSSEC OSSEC is an Open Source Host-based Intrusion Detection System. It performs . log analysis . integrity checking . Windows registry monitoring . rootkit detection . real-t…

第一章 ADDM简介                 在Oracle9i及之前,DBA们已经拥有了很多很好用的性能分析工具,比如,tkprof.sql_trace.statspack.set event 10046&10053等等.这些工具能够帮助DBA很快的定位性能问题.但这些工具都只给出一些统计数据,然后再由DBA们根据自己的经验进行 优化.         那能不能由机器自动在统计数据的基础上给出优化建议呢?Oracle10g中就推出了新的优化诊断工具:数据库自动诊断监视工具(Automa…

If you're interested in more of this type of content, check out the Servers for Hackers eBook! As some point you'll likely find yourself writing a script which needs to run all the time - a "long running script". These are scripts that shouldn't…

As an emergency rescue team leader of a city, you are given a special map of your country. The map shows several scattered cities connected by some roads. Amount of rescue teams in each city and the length of each road between any pair of cities are…

Emergency Time Limit: 1000ms   Memory limit: 65536K  有疑问?点这里^_^ 题目描述 Kudo’s real name is not Kudo. Her name is Kudryavka Anatolyevna Strugatskia, and Kudo is only her nickname.Now, she is facing an emergency in her hometown:Her mother is developing a…