Figure 30-50 Performance Counter Log correlated with SQL Server Profiler trace. in C#

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Figure 30-50 Performance Counter Log correlated with SQL Server Profiler trace.
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Performance Tuning and Troubleshooting
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Figure 30-51 Navigating through the Performance Log metrics.
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Using the Database Engine Tuning
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The Database Engine Tuning Advisor, available with SQL Server 2005, has replaced the Index Tuning Wizard that was available in earlier versions of SQL Server. It can analyze trace activity captured through SQL Server Profiler or a T-SQL work load script against your database and recommend various performance tuning enhancements. These performance tuning enhancements can include creating and dropping indexes, or implementing indexed views or a partitioning strategy if you have the correct edition of SQL Server 2005. The Database Engine Tuning Advisor can now recommend a number of performance enhancements across a number of databases simultaneously from a single trace or workload file. Although you can limit the amount of time you want the Database Engine Tuning Advisor to spend analyzing the workload, it is generally not recommended because the more time the Database Engine Tuning Advisor spends analyzing the workload, the quality of its recommendations increases. The Database Engine Tuning Advisor analysis generates a list of recommendations that can be converted into it XML script or a series of T-SQL scripts. You can evaluate these recommendations and apply them as necessary. The various reports that are produced
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Using Profiler, Management Studio, and Database Engine Tuning Advisor
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summarized different aspects of the workload and the results. Consider saving these reports as part of your change management routines.
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You should use the Database Engine Tuning Advisor in preference of the Index Tuning Wizard for tuning your SQL Server 2000 databases because it will do a superior job of recommending performance enhancements. The Database Engine Tuning Advisor is SQL Server 2000 aware and will make only recommendations that apply to SQL Server 2000.
To use the Database Engine Tuning Advisor, follow these steps: 1. Click Start, All Programs, Microsoft SQL Server 2005, and Performance Tools, and start Database Engine Tuning Advisor. Type your server name and authentication details, and then click the Connect button. 2. Type an appropriate session name. Type the details of the location of the workload file. Click the database you want to tune. Filter out any tables as appropriate using the drop-down list in the Selected Tables column. Figure 30-52 shows a tuning session being configured for the AdventureWorks database, including all its tables.
Figure 30-52 Database Engine Tuning Advisor.
Part VII
Performance Tuning and Troubleshooting
3. Click the Tuning Options tab. The Tuning Options tab, as shown in Figure 30-53, allows you to further refine the potential recommendations that the Database Engine Tuning Advisor makes. As indicated before, try not to limit the tuning time, as you might not get optimal recommendations. You can reduce the amount of time the Database Engine Tuning Advisor by reducing tuning options that you do not want it to consider. Select the appropriate combination of options. If in doubt as to what options to choose, leave the defaults alone.
Figure 30-53 Database Engine Tuning Advisor Tuning Options.
4. Click the Advanced Options button. The Advanced Tuning Options dialog box, shown in Figure 30-54, allows you to further refine the tuning options. Review and change these options as appropriate. Click the OK button when you have finished. 5. Click the Start Analysis button on the toolbar. Figure 30-55 shows the progress of the analysis.
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Using Profiler, Management Studio, and Database Engine Tuning Advisor
6. Once the Database Engine Tuning Advisor has finished its analysis, it will generate a Recommendations window, as shown in Figure 30-56. You can choose to ignore a recommendation by deselecting the check box associated with it.
Figure 30-54 Advanced Tuning Options dialog box.
Figure 30-55 Database Engine Tuning Advisor Progress window.
Part VII
Performance Tuning and Troubleshooting
Figure 30-56 Database Engine Tuning Advisor Recommendations window.
7. To see the T-SQL script that would be used to implement a recommendation, scroll to the right until you see the Definition column and click the recommendations hyperlink. The SQL Script Preview window, shown in Figure 30-57, is generated. You can copy the T-SQL script to the clipboard, if required. Click the Close button when you're finished.
Figure 30-57 SQL Script Preview window.
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Using Profiler, Management Studio, and Database Engine Tuning Advisor
8. Click the Reports tab. This tab provides a summary of the Database Engine Tuning Advisor session. A number of different tuning reports are also available in the bottom half of the window. You can click on the Select report drop-down list to see a list of the available reports that have been generated and view them individially. Figure 30-58 shows an example output of the Index detail report (current) report. 9. To save the results, click on the File menu and choose the Export Session Results option, specifying the location and name of the XML file.
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