SQL Optimizer for DB2 LUW 4.4.1 - User Guide

Delete SQL

When you delete a SQL statement in the SQL Repository, it will delete all references.

To delete a SQL statement stored in the SQL Repository

1. Select the SQL you want to delete.

2. Right-click and select Delete or press the Delete key to delete the selected SQL statement and all references to this SQL statement in other modules.

3. If the SQL statement is in an Index Impact Analysis or an Index Usage Analysis, you will be prompted before it is deleted.

Create Benchmark Factory Import File

All the SQL statements can be saved in a text file from the Job Manager, the Scanned SQL Viewer, the SQL Repository, and the SQL Optimizer windows. These SQL statements can then be imported into Benchmark Factory program (version 4.6 or later).

To create the text file to import into Benchmark Factory

1. Right-click and select Create Benchmark Factory Import File.

2. Select the specific SQL statements that you want to save. Click OK.

3. Enter the filename and select the file location. Click Save.

SQL Repository Functions

Below is a list of available functions within the SQL Repository window.

Index Impact Analyzer

Quest SQL Optimizer for IBM® DB2® LUW maximizes SQL performance by automating the manual, time-intensive and uncertain process of ensuring that SQL statements are performing as fast as possible. SQL Optimizer analyzes, rewrites, and evaluates SQL statements within multiple database objects, files, or SQL statements captured by the DB2 Event Monitor. With SQL Optimizer, you can analyze and optimize all your problem SQL from multiple sources. SQL Optimizer also provides you a complete index optimization and plan change analysis solution, from index recommendations to simulated index impact analysis, through comparison of multiple SQL access plans.

SQL Optimizer provides you with the following main modules.

SQL Optimizer (including SQL Rewrite and Generate Indexes functions)

SQL Formatter

Database Explorer

SQL Scanner

SQL Inspector

SQL Repository

Index Impact Analyzer

Index Usage Analyzer