Oracle Database 11g: Real Application Testing & Manageability Overview

Transcription

1 Oracle Database 11g: Real Application Testing & Manageability Overview

2 Top 3 DBA Activities Performance Management Challenge: Sustain Optimal Performance Change Management Challenge: Preserve Order amid Change Ongoing Administration Challenge: Manage More with Less Source: IOUG Nov 2006 Database Survey

3 Storage Backup Memory Apps/SQL Schema RAC Recovery Replication Sustain Optimal Performance with Self-Managing Database Adaptive Auto-Tuning Integrated Advisory Low Impact Instrumentation

4 ADDM for RAC Database-Level ADDM Self-Diagnostic Engine Instance-Level ADDMs Node 1 Node 2 Node 3 A Performance Expert, now a RAC Specialist too! Identifies the most Globally Significant performance issues Automatically runs every hour Cluster-wide analysis of: Global cache interconnect issues Lock manager congestion issues Global resource contention, e.g. IO bandwidth, hot blocks Globally high-load SQL Skew in instance response times

5 Automatic SQL Tuning Nightly Packaged Apps Auto Capture High-Load SQL Custom Apps Automatic SQL Tuning SQL Profiles Automatic implement Well-tuned SQL SQL Analysis Report Manually implement Automatically captures highload SQL Automatically tunes SQL without changing application by creating SQL Profiles Automatically implements (optional) greatly improved SQL plans Automatically reports analysis Automatically runs during maintenance window

6 Ease Partition Management Packaged Apps Index, MV Analysis Index, MV Advice Customizable Apps SQL Workload Access Advisor Partition Analysis Partition Advice Well-Designed Schema Partition Advice from Access Advisor Advise on Partitioning methods: Range, Range Key Hash, Hash key Interval (new), Interval Key Advise for tables,indexes, MVs Consider entire query & DML workload to improve query performance Automatic Interval Partition Creation On first insert With constant width intervals for dates and numbers Existing RANGE partitioned tables can be converted to INTERVAL

7 Automatic Memory Tuning O/S Memory SGA PGA O/S Memory SGA PGA Unifies system (SGA) and process (PGA) memory management Single dynamic parameter for all database memory Automatically adapts to workload changes Maximizes memory utilization Helps eliminate out- of-memory errors Gets and releases memory from OS: Linux, Windows and Solaris, HPUX, AIX Built in safety-nets to work under runaway workloads Pace needy components Not shrink below minimum

8 Streams Performance Advisor DB 1 ApplyQueue Capture Queue Propagation Propagation DB 2 DB 3 Apply Auto-discovery of streams topology on multiple databases Automatic performance analysis across all databases Per-Stream Analysis: Time-based analysis of each component (waits, CPU, etc) using ASH Bottleneck components Top wait events of bottleneck Per-Component Analysis: Throughput and latency Aborted or Enabled Integrate with ADDM Stream errors are integrated with Server-generated Alerts

9 Comparative Performance Analysis with AWR Baselines Metric Units Actual 8:00 12:00 AWR Baseline time Performance baseline is key for tuning: guide set alert thresholds monitor performance compare advisor reports AWR Baseline contains a set of snapshots for interesting or reference time periods User-specifiable, schedulable, e.g.: last Thanksgiving period every Monday 10am-noon for 4 Mondays Not automatically purged but can specify expiration Automatically captures 8-day moving window baseline for weekto-week comparisons (default)

10 Manage by Exception with Adaptive Metric Thresholds Adaptive threshold values follow baseline values AWR Baseline

11 Top 3 DBA Activities Performance Management Challenge: Sustain Optimal Performance Solution: Self-Managing Database Change Management Challenge: Preserve Order amid Change Ongoing Administration Challenge: Manage More with Less

12 Lifecycle of Change Management Test Make Change Diagnose & Resolve Problems Set Up Test Environments Provision for Production Identify Patches & Workarounds Diagnose & Manage Problems Preserve Order Amid Change

13 Lifecycle of Change Management Test Make Change Diagnose & Resolve Problems Set Up Test Environments Provision for Production Identify Patches & Workarounds Diagnose & Manage Problems Real Application Testing

14 Real Application Testing with Database Replay Recreate actual production database workload in test environment Capture workload in production including critical concurrency Replay workload in test with production timing Analyze & fix issues before production Client Client Client Production Test Middle Tier Replay DB Workload Oracle DB Capture DB Workload Test migration to RAC Storage

15 Comparison of LoadRunner & DB Replay Testing e-business Suite Time Taken (Days) Install & Setup 24 0 Understand Application Usage 20 0 Identify Key Transactions 20 2 Generate Workload 5 Run Test 5 DB Replay LoadRunner Total Testing Time DB Replay: ½ month LoadRunner: 7 ½ months

16 Database Replay Comparison Database Time Machine Technology that can only be built by Oracle Workload 3rd Party Load Testing Tools Artificial simulated workload Oracle Database Replay Real application workload Test Coverage 1-5% of workflow 100% of workflow Test Effort Simple app: weeks Complex app:months Simple app: days Complex app: days

17 Real Application Testing with SQL Performance Analyzer (SPA) Test impact of change on SQL query performance Capture SQL workload in production including statistics & bind variables Re-execute SQL queries in test environment Tune regressed SQL and seed SQL plans for production Client Client Client Production Test Middle Tier Re-execute SQL Queries Oracle DB Capture SQL Use SQL Tuning Advisor to tune regression Storage

18 SQL Performance Analyzer (SPA) Comparison Technology that can only be built by Oracle Capture with low overhead Test with production context Oracle SPA Yes Yes 3 rd Party SQL Testing Tools No, require explicit polling & external storage No, not integrated with optimizer Transfer resolutions to production Yes, integrated with SQL Tuning Advisor & SQL Plan Management No

19 Lifecycle of Change Management Test Make Change Diagnose & Resolve Problems Set Up Test Environments Provision for Production Identify Patches & Workarounds Diagnose & Manage Problems Provisioning Automation

20 Reliable Deployment with Provisioning Automation 1 Create reference RAC System 4 2 Stage Gold Image 3 Gold image based provisioning New in 10gR3 Grid Control: Greatly simplify RAC provisioning with automation Single click RAC scale-out and scale-back Provision full RAC and Clusterware systems Configures entire stack Pre-requisite checks & automatic fix-ups Scale-out RAC Create Production RAC System

21 SQL Plan Management Allow SQL plan changes, but only for the better! Optimizer selects a new plan only after verifying it performs better All new plans are automatically or manually verified by test executing them Better performance verified plans are stored in SQL Plan Baseline Using SQL Performance Analyzer (SPA) to pre-seed baseline with good plans for critical SQLs before making changes SQL Plan Management is Controlled Plan Evolution

22 Automatic Diagnostic Workflow Critical Error Automatic Diagnostic Repository 1 2 Auto Incident Creation Alert DBA First-Failure Capture Targeted Health Checks No Duplicate Bug? 4 EM Support Workbench: Package Incident & Configuration Information Repair Advisors 3 Yes EM Support Workbench: Apply Patch or Workaround Repair Advisors Reduce Time to Problem Resolution

23 Reliable Deployment with Patch Automation Apply patch Proactively search for patches relevant to customer environment 1-off patch becomes available Proactive patch advisories from Oracle Metalink Acquisition of the patch based on installation s configurations and feature usage (new in 11g DB) Stage once in the software library for multiple deployments Best practice driven patching Rolling patching support for RAC/ASM/Clusterware (new in 10gR3 Grid Control) Alert DBA Download Patch Yes Relevant Patch Found?

24 Online Patching Patch a running Oracle instance with no downtime Many one-off patches can be online patched Subset of RAC online upgradeable patches Great for diagnostic patches Enable, disable and de-install one-off patches with no downtime Integrated with OPatch and inventory Initially available on Linux and Solaris Long term goal is online patching of Critical Patch Updates (CPUs).

25 Top 3 DBA Activities Performance Management Challenge: Sustain Optimal Performance Solution: Self-Managing Database Change Management Challenge: Preserve Order amid Change Solution: Realistic Testing & Provisioning Automation Ongoing Administration Challenge: Manage More with Less

26 Manage More with Less using Grid Control Management by Exception Automatic notifications on violations Proactive security and policy evaluations Standardized IT operations management Manage Many as One Dashboard views Monitoring templates Combine targets into Groups and Systems Apply tasks and policies to Groups and Systems

27 Manage More with Less using Grid Control Software Installations SW and HW Configurations Resource Relationships Certified Configurations CMDB reports CMDB Statistics Policy standards Audit Reports Decision support for incident, problem, change, and release management Best Practices Configuration Management Database (CMDB) Discover Automated Inventory and Change Tracking All h/w & s/w configurations Relationships Oracle inventory, including patch history and updates Analyze Monitor and audit change Configuration comparisons against reference, saved or live Foundation for compliance and change control Map to ITIL and CoBIT frameworks Policy Management Standardize IT operations mgt Security configuration policies Support Service: Oracle Configuration Support Manager Faster problem resolution

28 Oracle Database 11g Solutions to Top DBA Challenges Performance Management Challenge: Sustain Optimal Performance Solution: Self-Managing Database Change Management Challenge: Preserve Order amid Change Solution: Real Application Testing & Provisioning Automation Ongoing Administration Challenge: Manage More with Less Solution: Grid Control

29