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Duration 28 hours
Course Outline
Application Tuning Methodology
Database and Instance Architecture
- Server processes
- Memory structure (SGA, PGA)
- Parsing and shared cursors
- Data files, log files, and parameter files
Analyzing Command Execution Plans
- Hypothetical plans (EXPLAIN PLAN, SQLPlus AutoTrac XPlane)
- Actual execution plans (V $ SQL_PLAN, XPlane, AWR)
Performance Monitoring and Bottleneck Identification
- Monitoring current instance status via system dictionary views
- Analyzing historical dictionary data
- Application tracking (SQLTrace, TkProf, TreSess)
The Optimization Process
- Properties of cost-based and rule-based optimization
- Determining optimization strategies
Controlling the Cost-Based Optimizer
- Session and instance parameters
- Optimizer hints
- Query plan patterns
Statistics and Histograms
- The impact of statistics and histograms on performance
- Methods for collecting statistics and histograms
- Strategies for estimating statistics
- Statistics management: blocking, copying, editing, automated collection, and change monitoring
- Dynamic data sampling (temporary tables, complex predicates)
- Multi-column statistics and expression-based statistics
- System-level statistics
Logical and Physical Database Structure
- Tablespaces
- Segments
- Extensions (EXTENTS)
- Blocks
Data Storage Methods
- Physical aspects of tables
- Temporary tables
- Index-organized tables
- External tables
- Table partitioning (range, list, hash, hybrid)
- Physical table reorganization
Materialized Views and Query Rewrite Mechanism
Data Indexing Techniques
- Constructing B-TREE indexes
- Index properties
- Types of indexes: unique, multi-column, function-based, reverse
- Index compression
- Rebuilding and coalescing indexes
- Virtual indexes
- Private and public synonyms for indexes
- Bitmap indexes and bitmap joins
Case Study: Full-Table Scans
- The impact of row placement at the table and block level on read performance
- Conventional vs. direct-path data loading
- Predicate ordering
Case Study: Index Access Paths
- Index read methods (UNIQUE SCAN, RANGE SCAN, FULL SCAN, FAST FULL SCAN, MIN/MAX SCAN)
- Utilizing function-based indexes
- Index selectivity (Clustering Factor)
- Multi-column indexes and SKIP SCAN
- Handling NULL values in indexes
- Index-organized tables (IOT)
- The impact of indexes on DML operations
Case Study: Sorting
- In-memory sorting
- Index sorting
- Linguistic sorting
- The effect of entropy and clustering factor on sorting
Case Study: Joins and Subqueries
- Join methods: MERGE, HASH, NESTED LOOP
- Joins in OLTP and OLAP systems
- Join order optimization
- Outer joins
- Anti-joins
- Semi-joins
- Simple subqueries
- Correlated subqueries
- Views and the WITH clause
Other Cost-Based Optimizer Operations
- Buffer Sort
- INLIST ITERATOR
- VIEW MERGE
- FILTER
- Count Stop Key
- Result Cache
Distributed Queries
- Reading query plans involving DB links
- Selecting leading tables
Parallel Processing
Requirements
- Proficiency in basic SQL and familiarity with the Oracle database environment (completion of the 'Native SQL for Programmers' workshop on Oracle 11g is preferred)
- Practical experience working with Oracle
Custom Corporate Training
Training solutions designed exclusively for businesses.
- Customized Content: We adapt the syllabus and practical exercises to the real goals and needs of your project.
- Flexible Schedule: Dates and times adapted to your team's agenda.
- Format: Online (live), In-company (at your offices), or Hybrid.
Price per private group, online live training, starting from 5200 € + VAT*
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Testimonials (2)
1. I liked the trainer's style of presenting and the patience to explain. 2. I liked that the trainer answered our side questions, even the ones that took the discussion a bit farther from the presentation, which showed flexibility. 3. I liked that there was a practical lab, not just a theoretical part. 4. I liked that it was online.
Roxana - DB Global Technology
Course - Oracle 11g - Application Tuning - Workshop
Trainer expertise on SQL tuning
