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Real-World Performance

Oracle Real-World Performance TeamOracle Server Technologies

7/16/2018


Bridging the Divide from Today’s Performance to What is Possible

What is Real-World Performance in 2018?



• Part of the Database Development Organization

• Global Team located in USA, Europe, Asia

• 350+ combined years of Oracle database experience

• Innovate to achieve exceptional Database Performance

• Our methods:• Use the product as it was designed to be used

• Numerical and logical debugging techniques

• Educate others about the best performance methods and techniques

• Avoid and eliminate “tuning” by hacking/guessing/luck

Who We Are


The database is not being used as it was designed to be used

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The application architecture/code design is Suboptimal

There is a suboptimal algorithm in the database

Root Causes of Suboptimal Database Performance


Where database user look for performance improvements

Perception

ApplicationAlgorithmnsand CorrectProduct Usage

DatabasePlatform

The best place to look for performance Improvements

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The Real World Performance Perception Problem

Reality

ApplicationAlgorithmnsand CorrectProduct Usage

DatabasePlatform


Recent Results 1000X Oracle Applications Project

Baseline: 4.3 Hours

Code Changes: 4.3 Hours

Correct Usage: 29 Secs

Platform: 12 Secs

Final: 12 Secs

Speed up: 1290

Baseline: 2.4 Days

Code Changes: 27 Mins

Correct Usage: 7.5 Mins

Platform: 4.5 Mins

Final: 4.5 Mins

Speed up: 768

Baseline: 2.5 Hours

Code Changes: 2.5 Hours

Correct Usage: 4 Secs

Platform: 0.90 Secs

Final: 0.90 Secs

Speed up: 10000


How Does Your Organization Do Performance ?

• Conventional

– Focus is on “Good Enough” or “What the Business Needs”

– Process Orientated/Part of QA

– Spends most the time on Platform Tuning Issues

–Only changes things within limited scope

– Bottom up tuning approach

– Looking for incremental gains

• Real-World

– Focus on excellence and what the hardware and software can do

– Innovate excellent performance and add intellectual property to your code

– Everything is within scope

– Holistic top down approach

– Focus on orders of magnitude gains

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How Does Your Organization Do Performance ?

• Resource Pyramid • Real-World

– Platform tuning yields only incremental gains

– Layered Software approach to performance yields only incremental gains

– Data Sets are growing faster than Moore’s law

– Todays code can only improve at a rate of Moore’s Law

– Need to look algorithmically and architecturally to achieve break out performance

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QA Regression Testing, Capacity Planning

No regression

Platform Tuning

Incremental Gains

10X100X

1000X



• Observed Behavior Seen in the Real World

– Incorrect use of Database and Tools

– Applications designed for small datasets working on large datasets

• Performance Improvement Opportunities–Order of magnitude performance improvements for data intensive workloads

– Reliability and Performance under load improvements for OLTP systems

• Management Challenges

– Education Investment

–Moving the focus from platform tuning to application code improvement

Todays Real World Performance Challenges/Opportunities



• Unstable OLTP systems due to inappropriate connection pool strategies in Middleware

– Connection storms and CPU oversubscription race conditions

– Resource leakages due to undetected programmer errors

• Sub optimal execution plans ( By design or by accident )

– Incorrect/Outdated statistics gathering techniques

– Excessive/inappropriate hinting technique

– Inappropriate Physical design ( partitioning , indexing, compression )

• Selective De-Tuning of databases in production

– Incorrect/legacy init.ora setting

– Dangerous and untested/warranted settings of underscore parameters

Incorrect use of Database



• Prevalence of put/get a row/object type processing in todays applications

• Contending designs

• Missed batch windows due to serial/non scalable/algorithmically weak application designs

• Lack of appreciation of SQL and database performance capabilities

– Set based coding techniques

– SQL pipelining techniques

– Transformational techniques on Big datasets

Applications designed for small datasets working on large datasets


Real-World Performance Education Programs

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Online Education

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• Real-World Performance Engineers discussing and demonstrating performance issues, root causes and when to apply the correct techniques

– The Optimizer

– Core DB Performance

– Extreme OLTP

– Extreme DW

• http://www.oracle.com/goto/oll/rwp

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Online Video Series

http://www.oracle.com/goto/oll/rwp


Real-World Performance Training

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Real-World Performance Classroom Training

• 4 or 5 Day Class of Intensive Performance Training

– Topics: The Optimizer, Core DB Performance, Extreme OLTP and DW

– Classroom, Demos, Hands On, Test and Quizzes

– Training given by Real-World Performance Engineers

– Designed for Architects, Developers and DBAs

– 4 months training in 4/5 days

• Contact RWP or you local Oracle team to apply

7/16/2018

Classroom Training


Real-World Performance Training

• Understand how the optimizer works and how it is influenced

• Learn the fundamentals of core database performance

– Database Computer Science

– Application Algorithms

– When to apply the correct tools and techniques

• Extreme OLTP

– Connection Management, Contention and Tools

• Extreme Data Warehousing

– Working with large data sets

– DW Techniques: Set based processing, Exadata, Database In-Memory, Parallel

What you will learn


Agenda

Core Oracle Database Performance Fundamentals

Extreme OLTP

SQL and the Optimizer

Extreme Data Warehousing

Hands on Exercises

1

2

3

4

5


Real-World Performance Classroom Training

• “Fantastic – such a good course. Why can’t all training be like this?”

• “The demos schooled me”

• “Content matches the real world—totally different than courses offered by Oracle University”

• “Your understanding of Oracle real life problems, familiarity with computer science basics and procedures, teaching excellence, and interpersonal skills all contributed to a successful training”—Venkat Dulla, Qualcomm

• “Anyone out there claiming that he/she is an Oracle DBA must attend RWP classes. We are highly experienced team of DBAs and we thought we’ve seen it all until this class ! Real problems that we are dealing day-to-day, like connection storms, was turned into training scenarios and explained so clearly with cause and solutions along with a diagnostic methodology…it was also an eye-opener for OLTP DBAs that I/O is no longer a bottleneck with exadata and it is time to start using set operations to achieve order of magnitude performance gains” –Metin Ylimaz, Turkcell

• Best training program Oracle has ever done for Fidelity” –Mihir Shah Equity CIO and Corp CTO Fidelity

7/16/2018

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