When does class start/end?
Class hours may vary, please reach out to contact@ascendientlearning.com if you have any questions.
Db2 12 for z/OS SQL Performance and Tuning
This course is designed to teach the students how to prevent SQL performance problems and how to improve the performance of existing SQL. Skills Gained After completing this course, students will be...
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$2,610 USD
GSA
$2,235.26
Duration
3 days
Course Code
CV964G
Available Formats
Classroom, Virtual
Course Eligible for IBM Digital Badge
Overview
This course is designed to teach the students how to prevent SQL performance problems and how to improve the performance of existing SQL.
Skills Gained
After completing this course, students will be able to:
- Understand and design better indexes
- Determine how to work with the optimizer (avoid pitfalls, provide guidence)
- Optimize multi-table access
- Work with subqueries
- Avoid locking problems
- Use accounting traces and other tools to locate performance problems in existing SQL
- and more
Who Can Benefit
This course is for Db2 12 for z/OS application developers, Db2 12 for z/OS DBAs, and anyone else with a responsibility for SQL performance and tuning in a Db2 12 for z/OS environment.
Prerequisites
- Familiarity with SQL
- Familiarity with Db2 12 for z/OS
- Familiarity with Db2 12 for z/OS application programming
Course Details
Course Outline
Introduction to SQL performance and tuning Performance issues Simple example Visualizing the problem SummaryPerformance analysis tools Components of response time Time estimates with VQUBE3 SQL EXPLAIN The accounting trace The bubble chart Performance thresholdsIndex basics Indexes Index structure Estimating index I/Os Clustering index Index page splitsAccess paths Classification Matching versus Screening Variations Hash access Prefetch CaveatMore on indexes Include index Index on expression Random index Partitioned and partitioning, NPSI and DPSI Page range screening Features and limitationsTuning methodology and index cost Methodology Index cost: Disk space Index cost: Maintenance Utilities and indexes Modifying and creating indexes Avoiding sortsIndex design Approach Designing indexesAdvanced access paths Prefetch List prefetch Multiple index access Runtime adaptive indexMultiple table access Join methods Join types Designing indexes for joins Predicting table orderSubqueries Correlated subqueries Non-correlated subqueries ORDER BY and FETCH FIRST with subqueries Global query optimization Virtual tables Explain for subqueriesSet operations (optional) UNION, EXCEPT, and INTERSECT Rules More about the set operators UNION ALL performance improvementsTable design (optional) Number of tables Clustering sequence Denormalization Materialized query tables (MQTs) Temporal tables Archive enabled tablesWorking with the optimizer Indexable versus non-indexable predicates Boolean versus non-Boolean predicates Stage 1 versus stage 2 Filter factors Helping the optimizer PaginationLocking issues The ACID test Reasons for serialization Serialization mechanisms Transaction locking Lock promotion, escalation, and avoidanceMore locking issues (optional) Skip locked data Currently committed data Optimistic locking Hot spots Application design Analyzing lock waitsMassive batch (optional) Batch performance issues Buffer pool operations Improving performance Benefit analysis Massive deletes
Schedule
2 options available
-
Apr 23, 2025 - Apr 25, 2025 (3 days)
Live Virtual | 9:30AM – 5:30PM EDT Language English Select from 1 options below Live Virtual |9:30AM – 5:30PM EDT- Enroll
- Enroll Add to quote
-
Jun 4, 2025 - Jun 6, 2025 (3 days)
Live Virtual | 9:30AM – 5:30PM EDT Language English Select from 1 options below Live Virtual |9:30AM – 5:30PM EDT- Enroll
- Enroll Add to quote
FAQ
Does the course schedule include a Lunchbreak?
Classes typically include a 1-hour lunch break around midday. However, the exact break times and duration can vary depending on the specific class. Your instructor will provide detailed information at the start of the course.
What languages are used to deliver training?
Most courses are conducted in English, unless otherwise specified. Some courses will have the word "FRENCH" marked in red beside the scheduled date(s) indicating the language of instruction.
What does GTR stand for?
GTR stands for Guaranteed to Run; if you see a course with this status, it means this event is confirmed to run. View our GTR page to see our full list of Guaranteed to Run courses.
How do I find an Ascendient Learning training location?
We have training locations across the United States and Canada - View a complete list of classroom training locations.
Which delivery formats are available?
At Ascendient Learning, we offer training that is Instructor-Led, Online, Virtual, and Self-Paced.
Does Ascendient Learning deliver group training?
Yes, we provide training for groups, individuals and private on sites. View our group training page for more information.
What does vendor-authorized training mean?
As a vendor-authorized training partner, we offer a curriculum that our partners have vetted. We use the same course materials and facilitate the same labs as our vendor-delivered training. These courses are considered the gold standard and, as such, are priced accordingly.
Is the training too basic, or will you go deep into technology?
It depends on your requirements, your role in your company, and your depth of knowledge. The good news about many of our learning paths, you can start from the fundamentals to highly specialized training.
How up-to-date are your courses and support materials?
We continuously work with our vendors to evaluate and refresh course material to reflect the latest training courses and best practices.
Are your instructors seasoned trainers who have deep knowledge of the training topic?
Ascendient Learning instructors have an average of 27 years of practical IT experience and have also served as consultants for an average of 15 years. To stay current, instructors spend at least 25 percent of their time learning new, emerging technologies and courses.
Do you provide hands-on training and exercises in an actual lab environment?
Lab access is dependent on the vendor and the type of training you sign up for. However, many of our top vendors will provide lab access to students to test and practice. The course description will specify lab access.
Will you customize the training for our company’s specific needs and goals?
We will work with you to identify training needs and areas of growth. We offer a variety of training methods, such as private group training, on-site of your choice, and virtually. We provide courses and certifications that are aligned with your business goals.
How do I get started with certification?
Getting started on a certification pathway depends on your goals and the vendor you choose to get certified in. Many vendors offer entry-level IT certification to advanced IT certification that can boost your career. To get access to certification vouchers and discounts, please contact info@ascendientlearning.com.
Will I get access to content after I complete a course?
You will get access to the PDF of course books and guides, but access to the recording and slides will depend on the vendor and type of training you receive.
How do I request a W9 for Ascendient Learning?
View our filing status and how to request a W9.
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