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Database Performance Tuning Introduction

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Introduction about database Performance Tuning. Deals with What, why,When aspects of Performance Tuning in general perspective.

1 of 18
Introduction to Database Performance Tuning 1 MyOnlineITCourses.com
Signals to Watch Out For…  Reports executing beyond average run times !!!  Data loads consuming more resources or time !!! 22 MyOnlineITCourses.com MyOnlineITCourses.com
Probable Causes  Large Tables  Poor database design  Bad coding  Database upgrade issues 33 MyOnlineITCourses.com MyOnlineITCourses.com
Probable Causes (contd)..  Database is moved to new Operating system  Distributed Database Queries 44 MyOnlineITCourses.com MyOnlineITCourses.com
Likely areas of Performance Problems OS & Hardware Design OS & Hardware Database Design Application Application Database 55 MyOnlineITCourses.com MyOnlineITCourses.com
What is Performance?  Performance to an  end-user means response time.  Performance from a  Systems viewpoint means throughput  Capability to handle a given load.  Thechallenge of application management is  To bring performance which is acceptable to end user. 66 MyOnlineITCourses.com MyOnlineITCourses.com
How to measure Query Performance Response • The time to get an answer time to an individual query • The number of queries that can be run in any time Throughput period. • e.g. Queries per second 77 MyOnlineITCourses.com MyOnlineITCourses.com
Why Performance Tuning ?  Performance is the key to success of an application  AIM :  Get best system throughput, with available / minimum resources  Avoid unnecessary investment in additional hardware/ development effort.  Better system throughput  implies better productivity  Better productivity  implies better service 88 MyOnlineITCourses.com MyOnlineITCourses.com
Tuning Strategy Who? Why? How • Application designers much? • Application developers • Have clear IDEA • Database administrators of achievements • System administrators from TUNING • Quantify clear • Network Administrators goals precisely • Ex:- Process 20,000 orders per day 99 MyOnlineITCourses.com MyOnlineITCourses.com
Tuning Stages Tuning at different Stages 10 10 MyOnlineITCourses.com MyOnlineITCourses.com
Typical Performance Bottlenecks - Oracle CPU bottlenecks Undersized memory structures I/O capacity issues Concurrency issues Database configuration issues Inefficient or high-load SQL statements Indexing issues 11 11 MyOnlineITCourses.com MyOnlineITCourses.com
Approach 12 MyOnlineITCourses.com
Tuning Approaches Pro-Active Re-Active 13 13 MyOnlineITCourses.com MyOnlineITCourses.com
Performance Management - SDLC Development & Performance Maintenance Management Requirement Analysis Performance Requirements Analysis and system sizing Architecture & Design Modeling & Engg. Design Coding Code Optimization System Testing Performance Testing & Tuning Production Performance Monitoring & Capacity Planning 14 14 MyOnlineITCourses.com MyOnlineITCourses.com
Would like to learn more about oracle Performance Tuning ??? 15 MyOnlineITCourses.com
Acquire Skills Gain 16 MyOnlineITCourses.com
www.MyOnlineITCourses.com  We give quality online trainings by IT Professionals for  Oracle SQL , PL/SQL  Oracle DBA  Oracle Performance Tuning  Data Modelling with Erwin Tool  To get more details contact us  info@myonlineitcourses.com  +91 991 2323 000  http://www.MyOnlineITCourses.com 17 17 MyOnlineITCourses.com MyOnlineITCourses.com
18 18 MyOnlineITCourses.com MyOnlineITCourses.com

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Database Performance Tuning Introduction

  • 1. Introduction to Database Performance Tuning 1 MyOnlineITCourses.com
  • 2. Signals to Watch Out For…  Reports executing beyond average run times !!!  Data loads consuming more resources or time !!! 22 MyOnlineITCourses.com MyOnlineITCourses.com
  • 3. Probable Causes  Large Tables  Poor database design  Bad coding  Database upgrade issues 33 MyOnlineITCourses.com MyOnlineITCourses.com
  • 4. Probable Causes (contd)..  Database is moved to new Operating system  Distributed Database Queries 44 MyOnlineITCourses.com MyOnlineITCourses.com
  • 5. Likely areas of Performance Problems OS & Hardware Design OS & Hardware Database Design Application Application Database 55 MyOnlineITCourses.com MyOnlineITCourses.com
  • 6. What is Performance?  Performance to an  end-user means response time.  Performance from a  Systems viewpoint means throughput  Capability to handle a given load.  Thechallenge of application management is  To bring performance which is acceptable to end user. 66 MyOnlineITCourses.com MyOnlineITCourses.com
  • 7. How to measure Query Performance Response • The time to get an answer time to an individual query • The number of queries that can be run in any time Throughput period. • e.g. Queries per second 77 MyOnlineITCourses.com MyOnlineITCourses.com
  • 8. Why Performance Tuning ?  Performance is the key to success of an application  AIM :  Get best system throughput, with available / minimum resources  Avoid unnecessary investment in additional hardware/ development effort.  Better system throughput  implies better productivity  Better productivity  implies better service 88 MyOnlineITCourses.com MyOnlineITCourses.com
  • 9. Tuning Strategy Who? Why? How • Application designers much? • Application developers • Have clear IDEA • Database administrators of achievements • System administrators from TUNING • Quantify clear • Network Administrators goals precisely • Ex:- Process 20,000 orders per day 99 MyOnlineITCourses.com MyOnlineITCourses.com
  • 10. Tuning Stages Tuning at different Stages 10 10 MyOnlineITCourses.com MyOnlineITCourses.com
  • 11. Typical Performance Bottlenecks - Oracle CPU bottlenecks Undersized memory structures I/O capacity issues Concurrency issues Database configuration issues Inefficient or high-load SQL statements Indexing issues 11 11 MyOnlineITCourses.com MyOnlineITCourses.com
  • 12. Approach 12 MyOnlineITCourses.com
  • 13. Tuning Approaches Pro-Active Re-Active 13 13 MyOnlineITCourses.com MyOnlineITCourses.com
  • 14. Performance Management - SDLC Development & Performance Maintenance Management Requirement Analysis Performance Requirements Analysis and system sizing Architecture & Design Modeling & Engg. Design Coding Code Optimization System Testing Performance Testing & Tuning Production Performance Monitoring & Capacity Planning 14 14 MyOnlineITCourses.com MyOnlineITCourses.com
  • 15. Would like to learn more about oracle Performance Tuning ??? 15 MyOnlineITCourses.com
  • 16. Acquire Skills Gain 16 MyOnlineITCourses.com
  • 17. www.MyOnlineITCourses.com  We give quality online trainings by IT Professionals for  Oracle SQL , PL/SQL  Oracle DBA  Oracle Performance Tuning  Data Modelling with Erwin Tool  To get more details contact us  info@myonlineitcourses.com  +91 991 2323 000  http://www.MyOnlineITCourses.com 17 17 MyOnlineITCourses.com MyOnlineITCourses.com
  • 18. 18 18 MyOnlineITCourses.com MyOnlineITCourses.com