Oracle Database Performance Tuning

3 Ratings

Course Number: ORC-402

Duration: 4 days (26 hours)

Format: Live, hands-on

Oracle Training Overview

This Oracle Database Performance Tuning training course teaches attendees techniques for diagnosing and fixing performance issues within the instance and the database. 

Note: The course uses the current release of the database, but can be delivered in previous versions if needed.

Location and Pricing

Accelebrate offers instructor-led enterprise training for groups of 3 or more online or at your site. Most Accelebrate classes can be flexibly scheduled for your group, including delivery in half-day segments across a week or set of weeks. To receive a customized proposal and price quote for private corporate training on-site or online, please contact us.

In addition, some Database courses are available as live, online classes for individuals.

Objectives

  • Understand the need for and the limitations of database tuning
  • Identify performance bottlenecks
  • Tune instance memory structures
  • Understand the options for database physical storage
  • Optimize performance with various table and index structures
  • Use supplied facilities for gathering and interpreting performance metrics
  • Learn techniques for stabilizing and re-optimizing SQL execution plans

Prerequisites

All students must have an understanding of Oracle database and instance architecture, familiarity with SQL and basic PL/SQL, and be able to work with Linux command-line tools.

Outline

Expand All | Collapse All

Introduction
The tuning methodology
  • What can be tuned?
  • The concept of DB Time
  • The response time tuning method
Server architecture and SQL statement processing: review
  • Memory structures: SGA and PGA
  • Background processes
  • Session architecture
  • Multithreaded and multiprocess models
  • The SQL parse / bind / execute / fetch cycle
Diagnostic tools and wait events
  • Use the wait event interface
  • Enable session tracing
  • Interrogate the Active Session History
Frequently encountered wait events
  • Disc I/O events
  • Buffer cache related events
  • Shared pool events
  • Redo generation events
  • Contention events
  • Enqueue waits
  • Latch and mutex events
Using Statspack and AWR reports
  • Understand the automatic snapshot mechanism
  • Use the DBMS_WORKLOAD_REPOSITORY package
  • Create snapshots
  • Create baselines
  • Modify settings
  • Generate and interpret AWR reports
  • Generate AWR SQL reports
  • Install and use Statspack
Tuning memory structures
  • Investigate the SGA memory structures
  • Diagnose and fix issues with sizing of the SGA components
  • Use automatic shared memory management (ASMM)
  • Manage the aggregate PGA
  • Understand the need for PGA memory
  • Correctly size the aggregate PGA
  • Work with temporary tablespaces
  • Enable automatic memory management (AMM)
Database physical structures
  • Understand when and why RAID and/or ASM is needed
  • Give Oracle information about disk performance
  • Investigate the space allocation algorithms
  • Contrast smallfile and bigfile tablespaces
  • Describe and evaluate the use of Automatic Storage Management
Metrics, alerts, and autotasks: the “self-managing” database
  • Define statistics and metrics
  • Use the server generated alert system
  • Set up alerts on baselines
  • Investigate the capabilities of the Autotask system
Indexes
  • Understand the purpose of indexes
  • Describe the types of index
  • B-tree indexes
  • Function based indexes
  • Reverse key indexes
  • Bitmap and bitmap join indexes
  • Create and maintain indexes
  • The Oracle Text domain index type
Tables
  • Heap Tables
  • Partitioned Tables
  • Index-Organized Tables (IOT)
  • Clustered tables
  • Temporary Tables
  • Datatype selection for SQL performance
  • Constraints vs. Triggers
  • Table Compression
  • Multiple Blocksize Support
  • The NOLOGGING Option
  • Re-organizing and shrinking tables
  • Statistics
  • Understand the importance of statistics
  • Object statistics
  • System statistics
  • Dictionary and fixed objects statistics
  • Build histograms
  • Type and purpose of histograms
  • Extended (or “column group”) statistics
  • Use dynamic sampling
  • Manage SQL directives
SQL execution plan stability
  • Learn how to stabilize execution plans
  • Explain the adaptive reoptimization processes
  • Statistics feedback
  • Adaptive execution plans
  • Contrast SQL Directives with SQL Profiles
  • Understand the importance of bind variables
  • Impact of bind variables on parsing and the library cache
  • Use of adaptive cursor sharing
The Advisors
  • Review the Management Packs and the AWR
  • The Automatic Database Diagnostic Monitor
  • SQL Tuning Advisor
  • The SQL Access Advisor
  • The Autotask tuning advice functionaility
  • SQL Profiles
Real Application Testing
  • The issues of realistic testing
  • The SQL Performance Analyzer
  • Database Replay
  • Scenarios for using Real Application Testing
Partitioning
  • Why to use partition: performance, manageability, scalability
  • Impact on memory and disc IO
  • Partitioning strategies: range, hash, list
  • Single level and composite partitioning
  • Partition tables, indexes, or both
  • Performance tuning aspects: partition pruning, partition-wise joins
Parallel operations
  • When parallel execution is helpful
  • When and how to use parallel query
  • Parallel automatic tuning features
  • Parallel DML and parallel DDL
  • Parallel execution plans
Common performance issues
  • What actually matters? Response time.
  • The tuning methodology
  • Oracle's top ten performance issues list
Conclusion

Training Materials:

All Oracle training students receive comprehensive courseware and a related textbook.

Software Requirements:

  • Intel dual core i5 or faster processor on a 64-bit operating system with at least 8 GB RAM
  • A complete installation of Oracle
  • Please contact us for detailed setup instructions if you have purchased this class.


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