TAILIEUCHUNG - Troubleshooting SQL 2005: Opening the Database Administrator’s Toolbox

There are many methods for troubleshooting databases. Many people jump straight to a Google search, or run to find the senior DBA who, most likely, has seen this problem before. While these may provide some results, there’s no better solution than tracking down empirical evidence as to the cause of a bottleneck or to the identity of the troublesome transaction. In addition to getting real answers (as opposed to trying other people’s solutions), you gain a much greater understanding of SQL’s inner workings and of how to optimize your database | Global Knowledge Expert Reference Series ofWhite Papers Troubleshooting SQL 2005 Opening the Database Administrator s Toolbox 1-800-COURSES Troubleshooting SQL 2005 Opening the Database Administrator s Toolbox Jeff Peters Global Knowledge Instructor Introduction There are many methods for troubleshooting databases. Many people jump straight to a Google search or run to find the senior DBA who most likely has seen this problem before. While these may provide some results there s no better solution than tracking down empirical evidence as to the cause of a bottleneck or to the identity of the troublesome transaction. In addition to getting real answers as opposed to trying other people s solutions you gain a much greater understanding of SQL s inner workings and of how to optimize your database. Upon first hearing the words empirical evidence many of you may be immediately dissuaded. Fear not The tools are at hand and they are relatively simple to use. A familiarity with logs monitors and other built-in programs will ensure that you have a number of research choices when trouble arises. Two Types of Troubleshooting Depending upon your needs you can choose to monitor your server in two ways. Real Time When you need information about what is happening at this very moment Trend Used when you need to see or record the performance and information over a period of time or if you can recreate the problem for recording purposes Most people will jump to real time monitoring as their first option. It gives instant information and if you know what you are looking for it can provide fast verification to your analysis. Trend monitoring is often used when trying to optimize a server or to deal with a problem of unknown origins. It can be used to cast a wide net and then to review the situation in detail. Real Time Monitoring Raw SQL Counters At any given time amazing amounts of statistical and diagnostic information are being produced by the physical server

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