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Course Outline
Application Tuning Methodology
Database and Instance Architecture
- Server processes
- Memory structures (SGA, PGA)
- Cursor parsing and sharing
- Data files, log files, and parameter files
Analysis of Command Execution Plans
- Predicted execution plans (EXPLAIN PLAN, SQLPlus AutoTrace, XPlan)
- Actual execution plans (V$SQL_PLAN, XPlan, AWR)
Monitoring Performance and Identifying Process Bottlenecks
- Monitoring the current instance status via system dictionary views
- Monitoring historical data dictionaries
- Application tracking (SQLTrace, TkProf, TreSess)
The Optimization Process
- Properties of cost-based optimization and regulation
- Optimization determinants
Controlling the Cost-Based Optimizer by:
- Session and instance parameters
- Hints
- Query plan patterns
Statistics and Histograms
- Impact of statistics and histograms on performance
- Methods for collecting statistics and histograms
- Strategies for collecting and estimating statistics
- Statistics management: blocking, copying, editing, automation of collection, and monitoring changes
- Dynamic data sampling (temporary tables, complex predicates)
- Multi-column statistics based on expressions
- System statistics
Logical and Physical Structure of the Database
- Tablespaces
- Segments
- Extents
- Blocks
Data Storage Methods
- Physical aspects of tables
- Temporary Tables
- Index-organized Tables
- External Tables
- Partitioned Tables (Range, List, Hash, Composite)
- Physical reorganization of tables
Materialized Views and the QUERY REWRITE Mechanism
Data Indexing Methods
- Building B-TREE indexes
- Index properties
- Index types: unique, multi-column, function-based, and inverse
- Compressed indexes
- Rebuilding and coalescing indexes
- Virtual indexes
- Private and public indexes
- Bitmap indexes and joins
Case Study - Full-Table Scans
- Impact of table placement and block performance on reads
- Loading data via conventional and direct path methods
- Order of predicates
Case Study - Data Access via Index
- Index access methods (UNIQUE SCAN, RANGE SCAN, FULL SCAN, FAST FULL SCAN, MIN/MAX SCAN)
- Using functional indexes
- Index selectivity (Clustering Factor)
- Multi-column indexes and SKIP SCAN
- NULLs and indexes
- Index-organized Tables (IOT)
- Impact of indexes on DML operations
Case Study - Sorting
- Memory sorting
- Index sorting
- Linguistic sorting
- The effect of entropy on sorting (Clustering Factor)
Case Study - Joins and Subqueries
- Join types: MERGE, HASH, NESTED LOOP
- Joins in OLTP and OLAP systems
- Join order
- Outer Joins
- Anti-join
- Semi-Joins
- Simple subqueries
- Correlated subqueries
- Views and the WITH clause
Other Cost-Based Optimizer Operations
- Buffer Sort
- IN-LIST iteration
- VIEW operation
- FILTER operation
- COUNT STOPKEY
- Result Cache
Dispersed Queries
- Reading query plans involving database links (DBlinks)
- Choosing the driving site
Parallel Processing
Requirements
- Proficiency in the basics of SQL and familiarity with the Oracle database environment (ideally having completed the 'Native SQL for Programmers - Workshops' training for Oracle 11g)
- Practical experience working with Oracle
28 Hours
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
