Optimizing SQL Transactions

Transcription

1 High Performance Oracle Optimizing SQL Transactions Dave Pearson Quest Software Copyright 2006 Quest Software

2 Quest Solutions for Enterprise IT Quest Software develops innovative products that help customers get more performance and productivity from their applications, databases, and Windows infrastructure

3 Quest: Technology Leadership Consistent annual growth Analysts rank us #1 $476 M in 05 Revenues Nasdaq: QSFT 2,700+ employees Customers 18,000+ worldwide 75% of the Fortune 500 $M USD $500 $450 $400 $350 $300 $250 $200 $150 $100 $50 $0 Strong industry partnerships '99 '00 '01 '02 '03 '04 '05 Application Management Software Gartner Dataquest, 2005 Distributed Database Management Facilities Software IDC, 2005 Windows Server Management Forrester Research, 2004

4 The Pressures of Optimal Database Performance

5 Components of Change

6 The Pressure to Perform

7 The Pressure to Perform

8 The Pressure to Perform

9 Quest Application Advantage Quest Application Advantage allows application teams to deliver, manage and control complex application environments Only Quest provides the deepest understanding of the application - from the end user to the database

10 Quest Application Advantage Quest Application Advantage allows application teams to deliver, manage and control complex application environments Only Quest provides the deepest understanding of the application - from the end user to the database

11 Deliver Best Practice Oracle Development Optimal Code Quality and Performance

12 The Impact of Poor Performance Diagnostics and Optimization

13 The Impact of Poor Performance Diagnostics and Optimization

14 SQL Performance Cycle

15 SQL Performance Cycle

16 Delivering Optimal Code

17 Delivering Optimal Code Step 1: Develop Write database application code for functionality Identify bugs in code Ensure code returns correct information 25% Reading 10% Coding Developer Resource Distribution Source: GARTNER GROUP 65% Debugging

18 Delivering Optimal Code Step 2: Optimize Review coding best practices Proactively identify problematic SQL directly from the source code Automatically rewrite SQL code in every possible alternative HW Network DB Changes Root of Database Performance Impact Source: Forrester Research Indexes 90% 60% SQL Statements

19 Delivering Optimal Code Step 3: Validate Benchmark SQL alternatives for performance and scalability Ensure code will perform for production requirements before deployment Apply standard SQL formatting to make code easy to maintain Create management report that shows best practices have been adhered to

20 Quest Solutions for Developer Best Practices

21 Quest Application Advantage Quest Application Advantage allows application teams to deliver, manage and control complex application environments Only Quest provides the deepest understanding of the application - from the end user to the database

22 SQL Performance Cycle

23 SQL Performance Cycle

24 Managing Production SQL Performance RESOLVE DISCOVER DIAGNOSE

25 Manage Discover, Diagnose and Resolve Poor Performance SQL Transactions

26 Database Sub-Systems Instance Transaction Configuration Storage

27 Performance Resolution Workflow Instance Transaction Configuration Storage

28 Quest Central Performance Products Instance Transaction Configuration Storage

29 Quest Central Performance Products Transaction Configuration Storage

30 Quest Central Performance Products Transaction Configuration Storage

31 Spotlight on Oracle Performance Diagnostic Console Features Automatic baseline & threshold calibration Fast-identification of performance problems Alert notification of detected bottlenecks Context specific expert advice to aid resolution Benefits Minimizes problem resolution time Eliminates guesswork when solving problems

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37 Spotlight on RAC Performance Diagnostic Console Discovers performance bottlenecks at all levels Node Cluster Interconnect Answers the most difficult RAC questions... How is each instance in the cluster performing? How is the database performing as a whole? Is the database experiencing cluster related contention?

38 Quest Central Performance Products Transaction Configuration Storage

39 Performance Analysis A complete performance dashboard for the DBA Collects performance metrics with no database overhead StealthCollect technology Provides at-a-glance understanding of database health Consolidates key performance metrics Enables root-cause detection Includes Performance Advisories and Best Practices

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41 Performance Analysis A complete performance dashboard for the DBA Collects performance metrics with no database overhead StealthCollect technology Provides at-a-glance understanding of database health Consolidates key performance metrics Enables root-cause detection Includes Performance Advisories and Best Practices

42 Performance Advisories Health Check with Performance Advisories Continual analysis of performance information to detect anomalies and inefficiencies Action Plan advisor to help resolve priority issues Assesses performance issues, best practices, and advanced diagnostics for Oracle s E-Business Suite

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44 Performance Advisories Historical Analysis Performance Advisories are historically retained for detailed retrospective analysis of overnight or past problems Visual impact indication for fast identification of problematic conditions

45 Advisory Detail

46 Performance Advisories Seamless flow between advisories and PA screens Identifies performance deviations Best practices and Oracle E-business advisories Advisories seamlessly embedded within PA Single agent Single UI Fully automated Advisory Detail

47 Historical Analysis Performance Advisories Performance Advisories are historically retained for detailed retrospective analysis of overnight or past problems Visual impact indication for fast identification of problematic conditions

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49 Historical View with detailed Drill-Down into Execution Plan

50 Performance Analysis Historical SQL Analysis Enables forensic analysis of historical database performance problems Single-click drill down to understand problems Historical Execution Plan Available for all SQL statements Compares all statement execution plans Execution plan evolution Detailed, expert problem resolution One-click SQL optimization

51 Performance Baselines Baseline Performance with IntelliProfile A new, adaptive profiling technology that continually and invisibly monitors and analyzes database performance Determines the acceptable/normal ranges of activity Provides comparison information needed to understand true database performance

52 Dimension Filtering Applies to every dimension Filters all columns in data display Provides focus to analysis activities Specific SQL statement Single End User Critical application program :

53 Change Tracking Align changes in the database server with performance System configuration Oracle configuration Oracle schema Execution plan User defined

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55 Performance Reporting Executive Summary Report The Executive Summary is a one-click report designed to deliver the critical information displayed in the Database Performance Home Page to key decision-makers Comparison to Baseline Reports DBAs can now compare database activity for a given time range to the baseline

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61 Performance Analysis Architecture Enterprise architecture High scalability and performance Low-impact collector Located on each managed production database Middleware receives data from multiple collectors History is centralized into long-term repository Change tracking Baseline comparison reporting

62 Quest Central Performance Products Transaction Configuration Storage

63 SQL Optimization - how difficult can it be? How many different ways can you write this query? SELECT EMP_NAME,DPT_NAME,GRD_DESC FROM EMPLOYEE, DEPARTMENT DEPARTMENT1, GRADE WHERE EMP_GRADE = GRD_ID AND EMP_DEPT = DPT_ID AND EXISTS (SELECT 'X' FROM DEPARTMENT DEPARTMENT2 WHERE DPT_AVG_SALARY IN (SELECT MIN(DPT_AVG_SALARY) FROM DEPARTMENT DEPARTMENT3) AND DPT_ID = EMPLOYEE.EMP_DEPT);

64 SQL Optimization - how difficult can it be? How many different ways can you write this query? SELECT EMP_NAME,DPT_NAME,GRD_DESC FROM EMPLOYEE, DEPARTMENT DEPARTMENT1, GRADE WHERE EMP_GRADE = GRD_ID AND EMP_DEPT = DPT_ID AND EXISTS (SELECT 'X' FROM DEPARTMENT DEPARTMENT2 WHERE DPT_AVG_SALARY IN (SELECT MIN(DPT_AVG_SALARY) FROM DEPARTMENT DEPARTMENT3) AND DPT_ID = EMPLOYEE.EMP_DEPT); Answer 30,491

65 Add Jobs to get started SQL Optimizer 7 Batch Optimization of: SQL in Source Code Stored Procedures SQL Text (eg: Toad) Live SQL (in the SGA) Indexes and Outlines

66 Select the Location of the SQL for optimization

67 Optimize Job

68 See the Improvement in SQL Performance Identify the Fastest Alternative SQL

69 Generate the Replacement Script and Deploy

70 Join the SQL Optimizer Community!

71 Walk-Thru Optimization Identify I/O wait as primary contributor to overall performance degradation Isolate SQL that primarily contributes to I/O waits

72 Walk-Thru Optimization Drill into I/O wait details to understand the type of I/O affecting performance

73 Walk-Thru Optimization View the statement details of the SQL transaction causing the highest I/O waits Send to the tuning lab for optimization

74 Walk-Thru Optimization Optimize the SQL statement to identify the fastest alternative

75 Quest Application Advantage Quest Application Advantage allows application teams to deliver, manage and control complex application environments Only Quest provides the deepest understanding of the application - from the end user to the database

76 Questions?

77 Thank You Copyright 2006 Quest Software