Cooper Oracle 11g Overview

Agenda
Sneak Peek at Oracle Database 11g
Management Enhancements
Availability Enhancements
Performance Enhancements
11g New Features Summary

Oracle Database 11g Change Assurance Capabilities Capture & Replay Workload Set Up Test Environments Perform Online Application Upgrades Detect & Tune Performance Changes Manage Execution Plan Evolution Package Incidents for Support Online Hot Patching

Snapshot Standbys for Test Environments
Convert Physical Standby to Snapshot Standby and open for writes by testing applications
ALTER DATABASE CONVERT TO SNAPSHOT STANDBY ;
Discard testing writes and catch-up to primary by applying logs
ALTER DATABASE CONVERT TO PHYSICAL STANDBY;
Preserves zero data loss
But no real time query or fast failover
Similar to storage snapshots, but :
Provides DR at the same time
Single copy of storage
Physical Standby Apply Logs Snapshot Standby Perform Testing Open Database Back out Changes Continuous Redo Shipping

Database Replay
Capture Workload in Production
Capture production workload with actual load & concurrency
Move the captured workload to test system
Replay Workload in Test
Make the desired changes in test system
Replay workload with production load & concurrency
Analyze & Report
Errors
Data divergence
Performance divergence
Use ADDM, AWR for further performance analysis

Pre-Change Production System … Backup … Captured Workload Process Process … Capture Workload Changes Unsupported Changes Supported
Database Upgrades, Patches
Schema, Parameters
RAC nodes, Interconnect
OS Platforms, OS Upgrades
CPU, Memory
Storage
Etc.
Client Client App Server App Server App Server Client Process

Post-Change Test System … … … … … Process Process … Process Process … Can use Snapshot Standby as test system Pre-Change Production System Processed Captured Workload Backup Capture Workload Replay Driver App Server App Server App Server Process Process Replay Driver Client Client … Client

Capturing the SQL Workload

SQL Replay
Focus on impact of change on SQL query workload
Capture SQL in Production
Automatically capture SQL workload over a specified period
Capture SQL text, plans, bind variables, execution statistics
Can capture 10.2 SQL workload
Move captured SQL workload to test system
Replay SQL in Test
Replay SQL in pre and post-change configurations
Compare and analyze performance
For regressed SQL, use SQL Tuning Advisor (10g) to improve performance with SQL Profiles
Changes supported
Major & minor database releases, patches, parameters, schema, optimizer statistics, tuning recommendations

SQL Replay Performance Analysis

Viewing SQL Replay Analysis Results

Automatic SQL Tuning Configuration

Automatic SQL Tuning Result Summary

Automatic SQL Tuning Results Recommendations

Automatic SQL Tuning Result Details

Automatic SQL Tuning Results Drilldown

New Change Assurance Capabilities in Oracle Database 11g Capture & Replay Workload Set Up Test Environments Perform Online Application Upgrades Detect & Tune Performance Changes Manage Execution Plan Evolution Package Incidents for Support Online Hot Patching

Online Application Upgrade
Large, mission critical applications are often unavailable for tens of hours while a patch or an upgrade is installed
Oracle Database 11 g introduces revolutionary new capabilities that allow online application upgrade with uninterrupted availability of the application
The pre-upgrade application and the post-upgrade application can be used at the same time
End-user sessions therefore enjoy hot rollover

Online Application Upgrade The challenge
The installation of the upgrade into the production database must not perturb live users of the pre-upgrade application
The changes must be made in privacy
Transactions done by the users of the pre-upgrade application must by reflected in the post-upgrade application
For hot rollover, we also need the reverse of this:
Transactions done by the users of the post- upgrade application must by reflected in the pre- upgrade application

Online Application Upgrade How did we do it?
Evolutionary capability improvements
Some table DDLs that used to fail if another session had outstanding DML now always succeed
Others, that cannot succeed while there’s outstanding DML, are now governed by a timeout parameter
Online index creation and rebuild now never wait
The dependency model is now fine-grained: e.g. adding a new column to a table, or a new subprogram to a package spec, no longer invalidates the dependants

Online Application Upgrade Revolutionary new capabilities
11.1 brings the edition , the editioning view , and the crossedition trigger
Code changes are installed in the privacy of a new edition .
Data changes are made safely by writing only to new columns or new tables not seen by the old edition
An editioning view exposes a different projection of a table into each edition to allow each to see just its own columns
A crossedition trigger propagates data changes made by the old edition into the new edition’s columns, or (in hot-rollover) vice-versa

SQL Plan Management controlled plan evolution
Business Requirement
Data is changing over time
Statistics and execution plans become suboptimal
Statistics have to be updated
Possibly unpredictable changes of execution plans
Today you have ‘freeze’ critical plans or statistics
Solution
Optimizer automatically manages SQL Plan Baselines
Only known and verified plans are used
Plan changes are automatically verified in maintenance window
Only comparable or better plans are used going forward
Can pre-seed critical SQL with baselines from SQL Replay

Automatic Diagnostic Workflow Reduce Time to Problem Resolution Automatic Diagnostic Repository Duplicate Bug? Yes
EM Support Workbench:
Apply Patch or Workaround
Guided Repair
No
EM Support Workbench:
Package Incident information
including CCR info
Guided Repair
Incident Packaging Service
First-failure Capture
Critical Error
Alert DBA
Targeted assessments
Assisted SR Filing
Auto Bug Matching (post 11gR1) 1 2 3 4 5

Incident Packaging Service

Feature-Based Patching
Automatic correlation against feature usages eliminates unnecessary downtime
Both ad-hoc searches and subscription supported
Yes Proactively push metadata (version, feature relevance) for evaluation Download patch Customer Relevant Patch Found? Recommended interim patch becomes available in Metalink Database targets/groups Features & versions collected Apply patch 1 2 3 4 5 Grid/DB Control

EM-driven Proactive Patching

Database feature based Patching

Online Patching of One-off Patches
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).

Online Patch Upgrade using RAC Initial RAC Configuration Clients on A, Patch B Emergency One-off Patches Operating System Upgrades Upgrade Complete Hardware Upgrades Clients Clients Clients on B, Patch A Patch 1 2 3 4 A B Patch B Critical Patch Updates

Online Database Upgrades using SQL Apply Initial SQL Apply Config Clients Redo Version X Version X 1 Switchover to B, upgrade A Redo 4 Upgrade X+1 X+1 Run in mixed mode to test Redo 3 X+1 X Upgrade node B to X+1 Upgrade Logs Queue X 2 X+1 Major Release Upgrades Patch Set Upgrades Cluster Software & Hardware Upgrades B A B A A B A B

Manageability, High Availability and Performance Highlights

Automatic SQL Tuning
Automatically chooses high-load SQL based on response time, throughput and frequency criteria
Automatically tunes SQL by creating SQL Profiles
Automatically test executes the tuned plans to verify improvement
Automatically implements greatly (3X) improved plans (optional)
Automatically reports missing access structures, stale stats, poorly structured SQL
Automatically runs during maintenance window or manually triggered
Well-tuned SQL Packaged Apps Customizable Apps Advisor Report Automatic SQL Tuning Index, Stats, Structure Analysis Test Execute SQL Profiles Implement Automatic Nightly SQL Profiling Manual High-Load SQL AWR

Partition Management Made Easy
Partition Advice from Access Advisor
Provide advice on Partitioning methods
Partitioning advice for tables,indexes, MVs
Consider entire query & DML workload to improve query performance
Integrated, non-conflicting advice with Indexes, MVs
Automatic Interval Partition Creation
On first insert
With constant width intervals for dates and numbers
Existing RANGE partitioned tables can be converted to INTERVAL
RANGE and INTERVAL can coexist in a single table
Well-Designed Schema SQL Workload Packaged Apps Customizable Apps Access Advisor Index, MV Advice Partition Analysis Partition Advice Index, MV Analysis

Flashback Data Archive
Long term retention - years
Automatically stores all changes to selected tables in Flashback Data Archive
Archive cannot be modified
Old data purged per retention policy
View table contents as of any time using Flashback SQL
Uses
Change Tracking
ILM
Long term history
Auditing
Compliance
ORDERS User Tablespaces Flashback Data Archive Archive Tables Oracle Database Changes Total Recall Select * from orders AS OF ‘Midnight 31-Dec-2004’

Physical Standby with Real-Time Query
Read-only queries on physical standby concurrent with redo apply
Supports RAC on primary / standby
Queries see transactionally consistent results
Immediate appeal to the many users of physical standby
DR with real time query is unique in the industry – no idle resources
Handles all data types, but not as flexible as logical standby
Physical Standby Database Primary Database Real-time Queries Continuous Redo Shipment and Apply Concurrent Real-Time Query

Rolling Database Upgrades Using Transient Logical Standby
Logical standby allows rolling upgrades but has data type restrictions
Temporarily convert physical standby to logical to perform a rolling upgrade
Data type restrictions are limited to short upgrade window
No need for separate logical standby for upgrade
Physical Logical Upgrade Physical Also possible in 10.2 with more manual steps

Performance Major New Performance Innovations
Automatic “native” PL/SQL and Java compilation
Now fully transparent, no C compiler required
SecureFiles
New generation LOBs just as fast as files
Query Results caches
Fast caching of query/function results for read-mostly data
Table Compression
Now for OLTP as well as DW applications
And much more …
RAC optimizations, TimesTen enhancements, faster triggers, Auto NFS, faster upgrades, faster Streams, faster Data Guard, …

Oracle SecureFiles Unified Storage
SecureFiles is a new database feature designed to break the performance barrier keeping file data out of databases
Similar to LOBs but much faster, and with more capabilities
Transparent encryption, compression, deduplication, etc.
Preserves the security, reliability, and scalability of database
Superset of LOB interfaces allows easy migration from LOBs
Enables consolidation of file data with associated relational data
Single security model
Single view of data
Single management of data

Server Results Cache taking the buffer cache to the next level
Automatically Caches results of queries, query blocks, or pl/sql function calls
Cache is shared across statements and sessions on server
Significant speed up for read-only / read-mostly data
join join T1 GBY join T2 T3 GBY join T4 join T5 T6 join join T1 GBY join T2 T3 GBY join T4 join T5 T6 Q1: build query cache join join T1 GBY join T2 T3 GBY Q2: Use it transparently cache

OCI Consistent Client Cache like cache fusion between server and client
Caches query results on client
Improves performance for read-mostly tables
Faster response time - eliminates network round trips
Saves server CPU
Consistent with server
Cache proactively refreshed when result set changes
Maximum age of consistency info can be set
Application Server Database Consistent Caching

Oracle Database 9 i table compression works for DW
Compression for bulk load operations
Direct Path Load
Create Table Select As …
Compression is now viable for OLTP
Regular (non-bulk) INSERT, UPDATE, DELETE
Add, Drop Column
Compression benefits
Reduced disk space consumption – typically 2x to 3x
Reduced IO
Enhanced cache efficiency
Better read performance
Compression for OLTP

Information Management Platform
Complete
Integrated
Robust
Scalable
Secure
Available on all platforms
Oracle interMedia Multimedia management Oracle Locator & Spatial Location and Proximity Searching XML DB Integrated Native XML Database Oracle Text Text Indexing and Search Relational Characters, Numbers, Dates, LOBs Oracle Content and Records DB Content Management

Information Management
Complete
Integrated
Robust
Scalable
Secure
Available on all platforms
Oracle interMedia DICOM Medical Image support Oracle Locator & Spatial Improved maps, 3D support, traffic updates XML DB Binary XML, Schema Evolution Information Retrieval Text Improvements, Semantic Processing Relational Secure Files Oracle Content and Records DB 11g Feature Refresh

Addt’l Oracle Database 11g Highlights
High Availability
Logminer, Physical Standby, Streams support for XMLType, TDE
Fast Start Failover with Async Propagation
Faster Logical Standby Apply
Flashback Transaction
Data Repair Advisor
Integration
Faster Gateways
Gateways to Legacy Databases
Streams Synchronous Capture
Streams Faster Apply
Performance and Scalability
RAC Scalability Enhancements
Faster PL/SQL Triggers
Security
Tablespace and LOB Encryption
Secure By Default
Enterprise Manager support for TDE, OLS, VPD, EUS
TDE works with LOBS, log miner
Windows
VSS Writer for Point In Time Copies
Manageability and Diagnosability
Unified Automatic Memory Management
Scheduler supports remote jobs
Automatic Health Monitoring
Faster Database Upgrades
ASM
Variable extent sizes, Fast resync, Preferred reads
RAC
Highly optimized protocols
ADDM for RAC
Content Management Infrastructure
Binary XML storage
Enhanced XML indexing
Combined Text and Relational Indexes
DICOM Medical Imaging Support
Storage & Query of Semantic Content (RDF, OWL)
Business Intelligence
Next generation OLAP
Supermodels for Data Mining
Enterprise Manager is DW aware
PIVOT/UNPIVOT operators

Using EM to Perform Fast Mirror Resync

Setting Up ASM Fast Mirror Resync

Monitor Memory Management

ADDM for RAC

A Q & Q U E S T I O N S A N S W E R S

Cooper Oracle 11g Overview

by moin_azeem

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