Delegates will learn how to
- plan for application monitoring and tuning
- identify database design factors that affect performance
- identify application design factors that affect performance
- use EXPLAIN as a first step towards performance tuning
- use Db2 traces to identify problem areas and identify tuning opportunities.
What is 'performance'?; Performance objectives; Workload categories; Service Level Agreements; Performance factors; System parameters; EDM pool size; Buffer pool sizes; Bufferpool thresholds; Bufferpool development; Database design factors; Application design factors; Db2 traces.Db2 Traces
Trace types; Trace destination; Accounting trace classes; Audit trace classes; Statistics trace classes; Performance trace classes; Monitor trace classes; Global trace classes; IFCID types; Other trace options; Controlling traces.Db2 Optimizer & Access Path Selection
Db2 optimiser; Access path selection; Access paths - index usage; Access paths - direct row access; Access paths - matching index access; Access paths - non-matching index access; Access paths - table(space) scan; Input to the optimiser; Filter factors; Filter factor and: clustering, column cardinality, column correlation, column distribution; Influencing the optimiser; Influencing the optimiser: manually adjusting statistics, using optimisation hints, modelling production values; Catalog statistics; Updating catalog statistics using RUNSTATS; Statistics columns; RUNSTATS examples.Db2 EXPLAIN
EXPLAIN; PLAN_TABLE; DSN_STATEMNT_TABLE; DSN_FUNCTION_TABLE; EXPLAIN examples: Access paths, Multi-index access, Nested queries.Database Design Factors
Normalisation forms; De-normalisation considerations; Table creation; Null attributes; Variable length columns; Column considerations; Constraint and domain management; Tablespace considerations; Space allocation and free space; Work file considerations; Data set placement; Index structure; Creating indexes; When and when not to index; Indexes and clustering; non-key columns in unique indexes; Composite keys; Reorganising indexes.Application Design Factors
Predicates; Access paths; Indexable and non-indexable predicates; SQL statement processing; Stage 1 and stage 2 predicates; Summary of predicate processing; Predicate evaluation sequence; Sequential prefetch; List prefetch; Index lookaside; Joins; Join transformation; Join method; Subqueries; Non-correlated vs. correlated subqueries; UNION; Case expressions; Union and case performance; Table expressions; Temporary tables; Table comparisons.Locking & Concurrency
Locking overview; Reasons for locking; Lock compatibility - row and page locks; Lock compatibility - table and tablespace locks; Bind - ACQUIRE and RELEASE parameters; Bind - ISOLATION and CURRENTDATA parameters; Lock avoidance; Accessing currently committed data; Locking and concurrency recommendations.Application Programs versus Db2 Utilities
Loading data; Online LOAD; Deleting data; Unloading data using the REORG utility; Unloading data using the UNLOAD utility; UNLOAD utility restrictions; Dynamic SQL in utility statements.Monitoring Application Performance
Monitoring overview; Db2 Performance Expert; Db2PE reports and traces; accounting short report; accounting long report; time distribution reports; times, suspensions & highlights report; SQL activity report; dynamic SQL caching report; other processing activity report; locking activity report; parallelism report; buffer pool and group buffer pool activity reports; statistics long report.Performance Analysis
EXPLAIN information; Db2PM reports; short accounting reports; long accounting reports; report usage summary; a general approach to problem analysis in Db2.
Frequently asked questionsSee all of our FAQs
How can I create an account on myQA.com?
There are a number of ways to create an account. If you are a self-funder, simply select the "Create account" option on the login page.
If you have been booked onto a course by your company, you will receive a confirmation email. From this email, select "Sign into myQA" and you will be taken to the "Create account" page. Complete all of the details and select "Create account".
If you have the booking number you can also go here and select the "I have a booking number" option. Enter the booking reference and your surname. If the details match, you will be taken to the "Create account" page from where you can enter your details and confirm your account.
Find more answers to frequently asked questions in our FAQs: Bookings & Cancellations page.
How do QA’s virtual classroom courses work?
Our virtual classroom courses allow you to access award-winning classroom training, without leaving your home or office. Our learning professionals are specially trained on how to interact with remote attendees and our remote labs ensure all participants can take part in hands-on exercises wherever they are.
We use the WebEx video conferencing platform by Cisco. Before you book, check that you meet the WebEx system requirements and run a test meeting (more details in the link below) to ensure the software is compatible with your firewall settings. If it doesn’t work, try adjusting your settings or contact your IT department about permitting the website.
Learn more about our Virtual Classrooms.
How do QA’s online courses work?
QA online courses, also commonly known as distance learning courses or elearning courses, take the form of interactive software designed for individual learning, but you will also have access to full support from our subject-matter experts for the duration of your course. When you book a QA online learning course you will receive immediate access to it through our e-learning platform and you can start to learn straight away, from any compatible device. Access to the online learning platform is valid for one year from the booking date.
All courses are built around case studies and presented in an engaging format, which includes storytelling elements, video, audio and humour. Every case study is supported by sample documents and a collection of Knowledge Nuggets that provide more in-depth detail on the wider processes.
Learn more about QA’s online courses.
When will I receive my joining instructions?
Joining instructions for QA courses are sent two weeks prior to the course start date, or immediately if the booking is confirmed within this timeframe. For course bookings made via QA but delivered by a third-party supplier, joining instructions are sent to attendees prior to the training course, but timescales vary depending on each supplier’s terms. Read more FAQs.
When will I receive my certificate?
Certificates of Achievement are issued at the end the course, either as a hard copy or via email. Read more here.