Optim Query Tuner for DB2 for z/OS

Both novice and expert SQL developers and DBAs will find facilities designed to help them develop better performing SQL code.

Optim Query Tuner captures and analyzes queries from a variety of sources:

• Packages, SQL stored procedures, triggers, and user-defined functions (UDFs) - all from within the Data Source Explorer in the Eclipse environment

• The integrated query editor and routine editor within IBM Data Studio or IBM Optim Development Studio

• The SQL Outline and the Java editor within Optim Development Studio

• The DB2 catalog, for database packages and stored procedures

Optim Query Tuner helps reduce downstream risks and costs provides providing expert query tuning advice

Optim Query Tuner includes the following tools and advisors:

• Access Plan Graph: Provides a graphical view of the access plan chosen by the optimizer.

• Query Annotation: Formats the query with collapsible sections and highlighting to improve readability and navigation through complex queries. Provides catalog statistics and cost estimates for the tables and columns used in the query.

• Query Advisor: Provides query rewrite advice based on a set of best practice rules.

• Access Path Advisor: Provides advice on how to resolve access path issues that may result in poor performance.

• Statistics Advisor: Provides advice on missing, outdated and conflicting statistics and suggests additional statistics that should be gathered to improve individual query performance. Use the statistics advisor to tune the DB2 auto-stats profile.

• Index Advisor: Provides advice on new indexes that may improve performance for individual queries as well as the ability to define user-defined virtual indexes.

• Query Report: Simplifies collaboration identifying key statistics, access path information, and physical database design information related to a query.

In addition, Query Tuner for DB2 for z/OS includes the ability to capture the query environment for users to visually add Optimization Hints.

Optim Query Tuner fosters cross-role collaboration.

• Optim Query Tuner helps developers and DBAs speak the same language with regard to query tuning.

• Integration with Optim Development Studio lets developers or DBAs invoke Optim Query Tuner in context from any SQL statement, whether the developer is working in the Java editor or the DBA is working with SQL packages.

• Streamline connection management with common connections across Optim Query Tuner, Optim Development Studio, Optim Database Administrator, and InfoSphere Data Architect.