SQL Optimizer for DB2 LUW 4.4 - User Guide

View LONG, CLOB and BLOB Columns

You can view the data in a column that is a LONG, CLOB, or BLOB data type.

To view the data

1. Select the table or view name displayed on the tree diagram in the left pane of the Database Explorer window.
2. In the right pane, select the Data tab.
3. Double-clicking the cell in the data grid.

Scan Database Objects

The SQL statements in the DDL for a database object can be scanned in the SQL Scanner to classify the SQL statements to help identify which SQL statements are likely to be causing performance problems.

To scan the DDL for a database object from the Database Explorer window

1. In the left pane, right-click the database object name and select Scan.
2. If the Job Manager window is opened, then the selected database object is added as a job in the window and the scanning starts automatically. If the Job Manager window is not open, the Group Manager window is opened for you to select or create a Job Group first.

Database Explorer Functions

Below is a list of available functions within the Database Explorer window.

SQL Repository

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