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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

Rename an Index Impact Analyzer

To rename an analysis

  1. Select the Analysis you want to modify from the left pane.

  2. Right-click and select Rename. A highlighted field is placed around the SQL name in the tree to indicate that you can edit the name. Change the name and press Enter or click any where outside the field.

Note: You can also right-click and select Modify to open the Modify Analyzer window. Modify the name. Click OK to save changes to the analysis.

 

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Index Impact Analyzer Functions

Below is a list of available functions within the Index Impact Analyzer window.

Button or Menu

Function

Analysis & Right-click Menu

New Analysis/Abort Analysis

Right-click Menu

Add Folder

Right-click Menu

Add Scenario

Right-click Menu

Add SQL

Right-click Menu

Regenerate

Right-click Menu

Modify

Right-click Menu

Rename

Right-click Menu

Delete

Right-click Menu

Go To Drop Indexes

Right-click Menu

Confirm Index Changes

 

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Index Usage Analyzer

Index Usage Analyzer Overview

The Index Usage Analyzer identifies unused indexes by analyzing query plans from SQL statements in your database applications. It examines their query plans and reports any indexes in the database that are not used. You can use this module to quickly identify the indexes in databases that are not contributing to the performance of the database applications. These unused indexes can then be deleted to free up space and improve the speed of the database applications and maintenance.

The Index Usage Analyzer identifies:

  • Tables that are referenced in the SQL statements

  • Indexes in each table that are used in the query plans, and the number of referenced SQL for each index

  • Indexes in each table that are not used in the query plans

The selected SQL statements that the Index Usage Analyzer analyzes are from SQL that you have saved in the SQL Repository or SQL statements from the SQL Scanner.

 

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