Thank you for sending your enquiry! One of our team members will contact you shortly.
Thank you for sending your booking! One of our team members will contact you shortly.
Course Outline
Application Tuning Methodology
Database and Instance Architecture
- Server processes
- Memory structures (SGA, PGA)
- SQL parsing and shared cursors
- Data files, log files, and parameter files
Analysis of Command Execution Plans
- Projected plans (EXPLAIN PLAN, SQLPlus AutoTrace, XPlan)
- Actual execution plans (V$SQL_PLAN, XPlan, AWR)
Performance Monitoring and Bottleneck Identification
- Monitoring current instance status via system dictionary views
- Analyzing historical data from dictionaries
- Application tracing (SQLTrace, TkProf, TreeSess)
The Optimization Process
- Cost-based optimization properties and regulations
- Determining optimal 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 gathering and estimating statistics
- Statistics management: blocking, copying, editing, automating collection, and monitoring changes
- Dynamic sampling (temporary tables, complex predicates)
- Multi-column statistics and expression-based statistics
- System 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, composite)
- Physical reorganization of tables
Materialized Views and the QUERY REWRITE Mechanism
Data Indexing Techniques
- Building B-TREE indexes
- Index characteristics
- Types of indexes: unique, multi-column, function-based, and reverse-key
- Index compression
- Index rebuilding and coalescing
- Virtual indexes
- Private and public synonyms for indexes
- Bitmap indexes and bitmap joins
Case Study: Full-Scan Data Access
- The impact of table and block placement on read performance
- Conventional vs. direct-path data loading
- Order of predicates
Case Study: Index-Based Data Access
- Index scan 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 (IOTs)
- The impact of indexes on DML operations
Case Study: Sorting
- In-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
- Order of table switching
- 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 when using DB links
- Selecting leading tables
Parallel Processing
Requirements
- Proficiency in basic SQL and familiarity with the Oracle database environment (completion of Oracle 11g training, such as the 'Native SQL for Programmers' workshop, is preferred)
- Hands-on practical experience working with Oracle
28 Hours
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
