Oracle performance project public
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This document provides an agenda for an Oracle Text tuning presentation. It introduces the presenter and their background in Oracle databases. The document then outlines some common problems businesses face with slow applications and identifies application tuning as the highest priority area to focus on, which can resolve 80% of performance issues. It provides an overview of the proposed solution of using application tuning tools, best practices, monitoring, and consulting to improve performance.
![Application Tuning
Starts with good knowledge of SQL and PL/SQL
Oracle Database features (special indexes, materialized views, execution plan, …)
Metalink:
Oracle Performance Diagnostic Guide (OPDG) [ID 390374.1]
Tools:
ADDM (Automated Database Diagnostics Monitor) Oracle 10g
TKProf
Trace and Trace Analyzer
Statspack
Oracle Enterprise Manager - Tuning Pack (cost option)
Old UTLBSTAT.SQL and UTLESTAT.SQL - Begin and end stats
monitoring](https://image.slidesharecdn.com/oracleperformanceprojectpublic-131012180422-phpapp02/85/Oracle-performance-project-public-10-320.jpg)
Oracle performance project public
- 1. Carlos Oliveira / May 31, 2012
- 2. Agenda Oracle Text Overview Introduction Problem Proposition Reasoning Tuning Area Solution Application Tuning Training & Reference Questions
- 3. Introduction I am a forward-looking Information Systems Architect with a solid Oracle DBA background comprising the daily infrastructure tasks of the DBA, several projects as a Data Modeler, and performance management projects. I Started on the mainframe business, and soon had a deep dive in application development for Oracle databases. After acquiring an Oracle certification, I worked on performance enhancement for applications using Oracle databases, and later worked several years as an infrastructure DBA, later I worked on data modeling projects and more recently a performance management project, on both application and database layers.
- 4. “Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it. Samuel Johnson
- 5. Problem • Business Disruption • Call Centers Losing Sales • Loss of Customer Trust & Satisfaction • Applications • Not designed for best performance • Frequent changes • Servers • Upgrades limited by hardware • New server - not a long term solution
- 6. Proposition • Applications • Do not act within application with only application knowledge • Servers and Database • Do not act within database with only database knowledge Do act within Application with Servers and Database knowledge
- 7. Reasoning • Where should the tuning effort be directed? • Database Design: Poor system performance usually results from a poor database design. • Application Tuning: Experience shows that approximately 80% of all Oracle system performance problems are resolved by coding optimal SQL. • Memory Tuning: Properly size your database buffers by looking at your wait events, buffer hit ratios, system swapping and paging, etc. • Disk I/O Tuning: Database files needs to be properly sized and placed to provide maximum disk subsystem throughput. • Eliminate Database Contention: Study database locks, latches and wait events carefully and eliminate where possible. • Tune the Operating System: Monitor and tune operating system CPU, I/O and memory utilization. (Source: http://www.orafaq.com/wiki/Oracle_database_Performance_Tuning_FAQ)
- 8. Tuning Area Chosen It’s clear we should prioritize Application Tuning due to its impact in performance Impact 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% Impact * Most cost-effective approach on solving performance problems.
- 9. Solution Tools Software Commercial In-house Training Sharepoint Library Best practices Guidelines Useful scripts Monitoring Real-time monitoring Ad hoc monitoring Consulting Walkthrough Review Final acceptance Communication
- 10. Application Tuning Starts with good knowledge of SQL and PL/SQL Oracle Database features (special indexes, materialized views, execution plan, …) Metalink: Oracle Performance Diagnostic Guide (OPDG) [ID 390374.1] Tools: ADDM (Automated Database Diagnostics Monitor) Oracle 10g TKProf Trace and Trace Analyzer Statspack Oracle Enterprise Manager - Tuning Pack (cost option) Old UTLBSTAT.SQL and UTLESTAT.SQL - Begin and end stats monitoring
- 11. Training Resources at Oracle website •Performance Tuning Guide and Reference http://docs.oracle.com/cd/B10500_01/server.920/a96533/toc.htm •SQL Reference http://docs.oracle.com/cd/B10500_01/server.920/a96540/toc.htm •PL/SQL User's Guide and Reference http://docs.oracle.com/cd/B10500_01/appdev.920/a96624/toc.htm Look at my publications in LinkedIn for specific tuning approaches.