Use Analyze Impact to evaluate the impact that a change can have on a group of SQL statements or a SQL workload. The types of changes Analyze Impact will allow you to evaluate include: the addition of indexes and changes to database parameters. You can also run a comparison of two different databases that run the same application.
You can collect the SQL workload from one of several sources: source code, an Oracle Automatic Workload Repository (AWR), or the Oracle System Global Area (SGA).
To perform an impact analysis
Specify the remaining index criteria for the selected index. Review the following for additional information:
|Index Type||Select an index type.|
|Advanced Options||Click to select from additional options for the selected index.|
|Select to add key compression. If you select Compress Key, you must also include the number of columns to compress in the Columns field.|
Click the edit link beside Module. Notice that all available modules (for the selected schema) display in the graph. You can filter the SQL to collect by selecting a particular module or you can select all to collect SQL from all modules.
Note: Use the mouse pointer to hover over a bar in the graph to display a descriptive tooltip containing SQL workload details to help you select a workload.
When the analysis process is finished, one of the following will display, depending on the analysis results:
If the analysis determines that non of the specified SQL were impacted, the log page displays and reports "No impacted SQL found."
Tip: Use and to navigate back and forth between the pages of a tab.
Outline Management displays stored outlines deployed using SQL Rewrite mode in Optimize SQL.
To manage outlines
Select the Manage Plans tab in the main window.
Tip: Select the Show Manage Plans checkbox on the Manage Plans options page to display the Manage Plans tab in the main window.
Click Manage Plans. The Create a New Manage Plans Session window displays.
Select a connection to use.
Select the Outlines Management tab.
Select a category in the Category/Outline pane.
You can delete or rename the selected category.
Select a stored outline from the category node.
You can move, rename, or reset the Used Flag on the selected stored outline.
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