Creating an Analysis Task

Once you have captured a SQL workload that you want to analyze into a SQL tuning set, you can run SQL Performance Analyzer to analyze the effects of a system change on SQL performance. To run SQL Performance Analyzer, you must first create a SQL Performance Analyzer task. A task is a container that encapsulates all of the data about a complete SQL Performance Analyzer analysis. A SQL Performance Analyzer analysis comprises of at least two SQL trials and a comparison. A SQL trial captures the execution performance of a SQL tuning set under specific environmental conditions and represents a particular test execution or explain plan operation performed by SQL Performance Analyzer when testing a system change. When creating a SQL Performance Analyzer task, you will need to select a SQL tuning set as its input source. The SQL tuning set remains constant in the SQL Performance Analyzer task and is executed in isolation during each SQL trial. Thus, performance differences between trials are caused by environmental differences. For more information, see "Creating a SQL Performance Analyzer Task".

Tip: Before running SQL Performance Analyzer, capture the SQL workload to be used in the performance analysis into a SQL tuning set on the production system, then transport it to the test system where the performance analysis will be performed, as described in "Capturing the SQL Workload".

Creating an Analysis Task

Related Topics