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SQL Optimizer for DB2 LUW 4.3.1 - User Guide

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SQL Optimizer for IBM® DB2® LUW

About SQL Optimizer for IBM DB2 LUW Getting Started

User Logon Screen Connect to the Database User Logon Privileges Special Registers Settings Synchronize the Data Dictionary Enter Authorization Key Select Database Language Status Bar—Main Window Toolbar

About Options SQL Rewrite Settings

SQL Rewrite Settings Intelligence SQL Rewrite (1) SQL Rewrite (2) SQL Options Quota General

Editor Settings Activity Log Settings Plan Settings SQL Scanner Settings

SQL Scanner Settings Options General

SQL Classification Settings

SQL Classification Settings SQL Statement with no Access Plan

Directory Setup Linkage Settings General Settings

General Settings General Message Result Set

Generate Indexes Settings

Generate Indexes Settings Intelligence Index Options

SQL Scanner Concepts

About SQL Scanner Embedded and Dynamic SQL Statements What does the SQL Scanner scan? Scanned SQL Statement Classification Data Directory Setting SQL Scanner Conversions

About SQL Scanner Conversions Trigger Conversion Parameter Marker Conversion Local Variable Conversion Quoted String Conversion COBOL Conversion

About Job Manager Job Manager Window Group Manager Window Open the SQL Scanner Add Scanner Jobs

Add Jobs to the Job Manager Window Add Database Objects Add Event Monitors Add Source Code Add SQL Inspectors Summary

Scan Scan Source Code with Temporary Tables Abort Scan Find a Job View Group Summary View Group Properties View Job Properties Open Group Manager Check Scanned SQL Mark and Unmark Jobs Delete Marked Jobs Move or Copy Jobs to Another Group Modify Job Details Switch Schema Change Event Monitor Path Placing Bookmarks in the Job Manager Window Create Benchmark Factory Import File Job Manager Functions

Scanned SQL Viewer

About Scanned SQL Viewer Scanned SQL Viewer Window Understand the Access Plan Open Scanned SQL Viewer View a Particular Type of SQL Statement Job Navigation Generate Report for Scanned SQL Statements Create Benchmark Factory Import File Scanned SQL Viewer Functions

SQL Optimizer Concepts

About the SQL Rewrite Function What Function Should l Use to Retrieve the Run Time? Unsatisfactory Performance Results SQL Functions SQL Optimizer Functions

SQL Optimizer Window

SQL Optimizer Window SQL Page

SQL Page SQL Text Pane SQL Information Pane Run Time Pane

Access Plan Page

Access Plan Page Access Plan Table Statistics Pane Index Statistics Pane Column Statistics Pane Column Values Distribution Statistics Pane Update Statistics

Plan Statistics Page Summary Page Compare Page Execute Result Page

Use the SQL Optimizer

Enter the Original SQL Statement Automatically Rewrite the Original SQL Statement Rewrite Details Add User-Defined SQL Alternatives Add Virtual Index Alternatives

About the Generate Indexes Function Index Expert Database Requirements Generate Index-Set Alternatives Index Generation Details Add Your Own Virtual Index Sets Analyze the Impact of New Indexes

Generate a Report for Optimized SQL Verify the Correctness of Rewritten SQL Test for Scalability Create Benchmark Factory Import File Batch Run

Retrieve the Run Time for a Group of Alternatives Input Parameter Values Time Commit or Rollback How to select the Optimal SQL Statement? View Batch Run Details Batch Run Criteria Window

Selected SQL SQL Termination Batch Termination Run Time Mode/ Repeat Test Batch Run Schedule

Save Optimized SQL

Save Optimized SQL Open Optimized SQL View Open Optimized SQL Details Refresh Plan Details Window

About SQL Formatter SQL Formatter Window Format a SQL Statement Host Variables within SQL Formatter SQL Formatter Functions

SQL Inspector Overview Data Directory Setting Open SQL Inspector SQL Inspector Window Statistics: Executed SQL Statistics: Executing SQL Add Inspector

Add Inspector General Information Collection Period Collection Time SQL Filter Monitoring Period Target Time Target Applications and Users

Inspect Ad hoc Inspect Abort Inspect Scan Inspector Delete Inspector Find Inspector View Inspector Properties Place Bookmarks in SQL Inspector Window Create Benchmark Factory Import File Sum Statistics for a Stored Procedure SQL Inspector Functions

Database Explorer

About Database Explorer Database Explorer Window Privileges Opening Database Explorer Sort Criteria Modify Data Copy Column Names to Another Window Copy Data from Cells, Rows, or Columns View LONG, CLOB and BLOB Columns Scan Database Objects Database Explorer Functions

About SQL Repository SQL Repository Window Add SQL to SQL Repository Add SQL Window: General Page Add SQL Window: SQL Information Page Refresh SQL Access Plan Modify SQL Rename SQL Delete SQL Create Benchmark Factory Import File SQL Repository Functions

Index Impact Analyzer

About Index Impact Analyzer Index Impact Analyzer Window

Index Impact Analyzer Window Right Pane for Analyzers Right Pane for Scenarios Analyzed Folder Right Pane for Scenario Right Pane for SQL Analyzed Folder Right Pane for SQL Statements

Create an Index Impact Analyzer New Analysis Wizard: Analyzer Page New Analysis Wizard: Select SQL Page New Analysis Wizard: Index Page Add Index Window View Index Impact Analysis Details Add SQL to an Index Impact Analysis Add Scenario Modify Index Impact Analyzer Regenerate Rename an Index Impact Analyzer Delete an Index Impact Analysis Index Impact Analyzer Functions

Index Usage Analyzer

About Index Usage Analyzer Index Usage Analyzer Window

Index Usage Analyzer Window Right Pane for Analyzers Right Pane for Tables Analyzed Right Pane for Analyzed Table Information Right Pane for SQL Analyzed Folder Right Pane for SQL Statements

Create an Index Usage Analysis Update an Index Usage Analysis New Analysis Wizard: Analyzer Page New Analysis Wizard: Select SQL Page View Index Usage Analysis Details Modify an Index Usage Analysis Rename an Index Usage Analysis Delete an Index Unused Analysis Index Usage Analyzer Functions

User-Defined Temp Table

About User-Defined Temp Table Privileges for Creating User-Defined Temp Tables Create Temporary Tables View SQL Scripts of Temporary Tables Drop Temporary Tables Copy SQL with Temporary Tables to SQL Optimizer Preference Settings for Handling Temporary Tables

Editor Functions

About Editor Functions Auto Correction Brackets Pairing Comment and Uncomment Text Customize Editable Panes Editor Panes Shortcuts Indent and Outdent Text Member and Argument Lookup Syntax Highlight Uppercase and Lowercase Text

About SQL Functions Retrieve Access Plan Retrieve Run Result Retrieve Run Time Test for Scalability Convert Parameter Markers

SQL Information and Functions

SQL Information Pane Send SQL to SQL Optimizer Send SQL to Index Expert Open SQL from SQL Repository Save SQL to SQL Repository Create Benchmark Factory Import File SQL Navigation Find a SQL Using a Text String Comments Variables Parameters Window Filter Database Objects Access Plan

Access Plan Review Access Plans Access Plan Options Access Plan Functions Plan Detail Plan Help Animate Access Plans Copy Access Plans DB2 Optimized Text

Search Functions

Search Functions Find Quick Find Find Next Replace Goto Line Regular Expression

About Activity Log View Activity Log Report Purge Activity Log Data Start Recording Activities Stop Recording Activities

SQL Scanner Tutorial SQL Optimizer Tutorial SQL Formatter Tutorial SQL Inspector Tutorial User-Defined Temp Tables Tutorial SQL Repository Tutorial Save SQL to the SQL Repository from Other Modules Tutorial Generate Virtual Indexes Tutorial Index Impact Analyzer Tutorial Index Usage Analyzer Tutorial Database Explorer Tutorial

About us Copyright

Enter Authorization Key

SQL Optimizer requires an authorization key to use the program.

To enter another trial key or to enter the production key

Select Help | Licensing.
In the Licensing window, enter your key.
For a production key, enter your site message.
Click Apply.

Notes:

The license key must be entered for each user logon on your computer.
A trial key is valid for thirty days.

Tip: Access the Licensing window any time to review current license information in the License Details pane.

Select Database Language

The first time the program is launched after you have installed it, the Language window appears. This window enables you to select the language character set that was used to enter and display the SQL and data in your database.

The Interface for the program is always in English.

To select the language at the initial opening of SQL Optimizer

In the Character set field, select the language.

To select the language from the Options

Click .
Select the General tab.
In the Character set field, select the language.

Related Topic

Status Bar—Main Window

Item	Description
Schema	Displays the selected schema and lists available schemas. Use the Schema list to select the schema that corresponds to the SQL statements that you are working with.
Login	Read-only field, displaying the connected login for DB2 LUW.
Database Alias	Displays the DB2 LUW database alias for the current database.
Quest Assistant	Displays the Quest Assistant icon if Quest Assistant was minimized.
Connection Information	Displays the connection information icon if the user account does not have every privilege needed by every module.
Temp Table	Displays the temp table icon if a user-defined temp table has been created.
Special Registry Settings	Displays the special registry settings icon if you have made any changes to the DB2 LUW special registry settings using SQL Optimizer.

You may open the Quest Assistant, the Connection Information window, the User-Defined Temp Table window or the special Registry Settings window by clicking the corresponding icon on the Status Bar.

Toolbar

Availability of the toolbar buttons varies according to the active module. Buttons appear active when they are accessible and appear dimmed when they are not. By default all toolbar are shown.

To hide or show a toolbar

Select Window | Customize Toolbars
Select the toolbars you want to show.
Clear the toolbars you want to hide.

To reset the toolbar to the default

Select Window | Customize Toolbars | Reset Default.

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