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SQL Optimizer for SAP ASE 3.9.1 - User Guide

Introduction Tutorials Preferences Editor Functions SQL Information and Functions Performance Monitor SQL Inspector SQL Collector for Monitor Server SQL Scanner Index Advisor SQL Optimizer
SQL Optimizer Overview Optimization Engine Common Coding Errors in SQL Statements What Function Should l Use to Retrieve the Run Time? Unsatisfactory Performance Results SQL Optimizer Functions SQL Editor Optimized SQL Activity Log
SQL Worksheet SQL Formatter Database Explorer Code Finder Object Extractor SQL Repository Index Impact Analyzer Index Usage Analyzer Configuration Analyzer Migration Analyzer Abstract Plan Manager User-Defined Temp Tables SQL History Legal Information

Add a Scenario

After creating an Index Impact Analysis, you can add more Scenarios to it.

To add a Scenario

Method One

  1. In the left pane, right-click the Analyzer and select Add Scenario.

  2. In the Add Scenario wizard, select the Index page and specify the information for the proposed new indexes. Click OK.

Method Two

  1. In the left pane, right-click on an Analyzer and select New Analysis.

  2. In the New Analysis wizard, select the Continuing an existing Analyzer using the Analyzer’s selected SQL option.

  3. From the Select Analyzer field, click the Analyzer name.

  4. Select the Index page and specify the information for the proposed new indexes. Click OK.

 

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Delete an Index Impact Analysis

To delete an analysis

  1. Select the analysis.

  2. Right-click and select Delete or press Delete.

 

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Modify an Index Impact Analyzer

You can only modify the analysis name and description.

To modify an Analysis

  1. From the Index Impact Analyzer window, select the Analyzer you want to modify from the left pane.

  2. Right-click and select Modify to open the Modify Analyzer window.

  3. Modify the name and/or description. Click OK to save the changes.

 

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Regenerate

The Index Impact Analyzer Scenario can be re-executed using the same indexes. You can choose to retrieve the query plans for all SQL statements in the Scenario or select specific SQL to retrieve the query plan again using the same indexes. This function is useful if changes have occurred in the database environment, such as data volume changes, that may affect query plans.

To regenerate an analysis

  1. Select the Scenario from the left pane.

  2. Right-click and select Regenerate.

  3. From the Regenerate Scenario window, check the SQL statements whose current query plans you would like retrieved again.

 

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