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

1. Introduction
to
Database Performance Tuning
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2. Signals to Watch Out For…
 Reports executing beyond average run times !!!
 Data loads consuming more resources or time !!!
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3. Probable Causes
 Large Tables
 Poor database design
 Bad coding
 Database upgrade issues
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4. Probable Causes (contd)..
 Database is moved to new Operating system
 Distributed Database Queries
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5. Likely areas of Performance Problems
OS & Hardware
Design
OS & Hardware
Database
Design
Application
Application Database
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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.
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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
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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
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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
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10. Tuning Stages
Tuning at different Stages
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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
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12. Approach
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13. Tuning Approaches
Pro-Active
Re-Active
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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
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15. Would like to learn more about
oracle Performance Tuning ???
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16. Acquire Skills Gain
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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
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