ORACLE DATABASE 12C SQL TUNING

Duration of Training: 6 weekends( 48 Hours )   

Exploring the Oracle Database Architecture

  • Oracle Database Server Architecture: Overview
  • Connecting to the Database Instance
  • Physical Structure
  • Oracle Database Memory Structures: Overview
  • Automatic Shared Memory Management
  • Automated SQL Execution Memory Management
  • Database Storage Architecture, Logical and Physical Database Structures
  • Segments, Extents, and Blocks & SYSTEM and SYSAUX Tablespaces

Introduction to SQL Tuning

  • Reason for Inefficient SQL Performance
  • Performance Monitoring Solutions
  • Monitoring and Tuning Tools: Overview
  • CPU and Wait Time Tuning Dimensions
  • Scalability with Application Design, Implementation, and Configuration
  • Common Mistakes on Customer systems & Proactive Tuning Methodology
  • Simplicity in Application Design
  • Data Modeling, Table Design, Index Design, Using Views, SQL Execution Efficiency, Overview of SQL*Plus & SQL Developer

Introduction to the Optimizer

  • Structured Query Language
  • SQL Statement Parsing: Overview
  • Why Do You Need an Optimizer?
  • Optimization During Hard Parse Operation
  • Transformer & Estimator
  • Cost-Based Optimizer
  • Plan Generator
  • Controlling the Behavior of the Optimizer, Optimizer Features and Oracle Database Releases

Interpreting Execution Plans

  • What Is an Execution Plan? Where To Find Execution Plans and Viewing Execution Plans
  • Plan Table & AUTOTRACE
  • Using the V$SQL_PLAN View
  • Automatic Workload Repository (AWR)
  • SQL Monitoring: Overview
  • Interpreting an Execution Plan
  • Reading More Complex Execution Plans and Reviewing the Execution Plan
  • Looking Beyond Execution Plans

Application Tracing

  • End-to-End Application Tracing Challenge
  • Location for Diagnostic Traces
  • What is a Service? Use Services with Client Applications & Tracing Services
  • Use Enterprise Manager to Trace Services
  • Session Level Tracing: Example
  • The trcsess Utility and SQL Trace File Contents
  • Invoking the tkprof Utility and Output of the tkprof Command
  • tkprof Output with and without Index: Example

Optimizer: Table and Index Operations

  • Row Source Operations, Main Structures and Access Paths
  • Full Table Scan
  • Indexes: Overview and B*-tree Indexes and Nulls
  • Using Indexes: Considering Nullable Columns
  • Index-Organized Tables
  • Bitmap Indexes, Bitmap Operations and Bitmap Join Index
  • Composite Indexes and Invisible Index
  • Guidelines for Managing Indexes and Investigating Index Usage

Optimizer Join Methods

  • Nested Loops Join
  • Nested Loops Join: 11g Implementation
  • Sort Merge join
  • Hash Join and Cartesian Join
  • Equijoins and Nonequijoins
  • Outer Joins
  • Semijoins
  • Antijoins

Optimizer: Other Operators

  • When Are Clusters Useful?
  • Sorting Operators and Buffer Sort Operator
  • Inlist Iterator and View Operator
  • Count Stop Key Operator
  • Min/Max and First Row Operators and Other N-Array Operations
  • Filter operations and Concatenation Operations
  • UNION [ALL], INTERSECT, MINUS
  • Result Cache Operator

Case Study: Star Transformation

  • The Star Schema Model and The Snowflake Schema Model
  • Star Transformation
  • Retrieving Fact Rows from One Dimension and from All Dimensions
  • Joining the Intermediate Result Set with Dimensions
  • Star Transformation Plan Examples
  • Star Transformation Hints
  • Using Bitmap Join Indexes
  • Bitmap Join Indexes: Join Model 1 to 4

Optimizer Statistics

  • Types of Optimizer Statistics
  • Table, Index and Column Statistics
  • Index Clustering Factor
  • Histograms, Frequency Histograms and Histogram Considerations
  • Multicolumn Statistics and Expression Statistics Overview
  • Gathering System Statistics and Statistic Preferences
  • Manual Statistics Gathering
  • Locking Statistics, Export/Import Statistics and Set Statistics

Using Bind Variables

  • Cursor Sharing and Different Literal Values
  • Cursor Sharing and Bind Variables
  • Bind Variable Peeking
  • Cursor Sharing Enhancements
  • The CURSOR_SHARING Parameter
  • Forcing Cursor Sharing
  • Adaptive Cursor Sharing
  • Interacting with Adaptive Cursor Sharing

Using SQL Tuning Advisor

  • Tuning SQL Statements Automatically
  • Application Tuning Challenges
  • SQL Tuning Advisor: Overview
  • Stale or Missing Object Statistics and SQL Statement Profiling
  • Plan Tuning Flow and SQL Profile Creation
  • SQL Tuning Loop, Access Path Analysis and SQL Structure Analysis
  • Database Control and SQL Tuning Advisor
  • Implementing Recommendations

Using SQL Access Advisor

  • SQL Access Advisor: Overview
  • Possible Recommendations
  • SQL Access Advisor Session: Initial Options
  • SQL Access Advisor: Workload Source
  • SQL Access Advisor: Recommendation Options
  • SQL Access Advisor: Schedule and Review
  • SQL Access Advisor: Results
  • SQL Access Advisor: Results and Implementation

Using Automatic SQL Tuning

  • SQL Tuning Loop
  • Automatic SQL Tuning
  • Automatic Tuning Process
  • Configuring Automatic SQL Tuning
  • Automatic SQL Tuning: Result Summary
  • Automatic SQL Tuning: Result Details
  • Automatic SQL Tuning Result Details: Drilldown
  • Automatic SQL Tuning Considerations

SQL Performance Management

  • Maintaining SQL Performance and SQL Plan Management: Overview
  • SQL Plan Baseline: Architecture
  • Important Baseline SQL Plan Attributes
  • SQL Plan Selection
  • Possible SQL Plan Manageability Scenarios
  • SQL Performance Analyzer and SQL Plan Baseline Scenario
  • Loading a SQL Plan Baseline Automatically and Purging SQL Management Base Policy
  • Enterprise Manager and SQL Plan Baselines

Our Courses