OUGF 15v Juhlaseminaari
6.11.2003
Marko Hotti
Product Manager, Oracle10g
Oracle Finland Oy
Problem with Today’s IT
Infrastructure
 Islands of Computing
Resource
–
–
Some are melting
down
Some are almost idle
 High Costs
–
–
–
Hardware
Labor
Software
CRM
ERP
 Hard to Align
with Business Priorities
DW
Solution: Computing On
Demand
Mainframe Model
 Partitioning of one large
server
 Built with high quality,
high cost parts
 Complete, integrated
software
 High quality of service at
high cost
Grid Computing Model
 Coordinated use of many
small servers
 Built with low cost, standard,
modular parts
 Open, Complete, integrated
software
 High quality of service at
low cost
Requirements for Enterprise
Grids
 Run all your applications
 Stores all your information
 Highly scalable, available,
reliable
 Secure
 Easy to manage
–
–
Make individual systems
self-managing
Manage thousands of
servers at once
Grid Computing
Policy
Manager
Resource
Manager
Workload
Manager
Policy-Based
Workload
Management
BLADE FARM
(Local Grid)
High Speed
Interconnect
Dynamically
Provisioned &
Registered
BLADES
Oracle Database 10g –
The First Database
Designed for the Grid
Oracle Database 10g –
Database for the Grid







Storage for All Your Data
Real Application Clusters
High Availability
Ease of Management
Data Provisioning across Grid
Business Intelligence on the Grid
Application Development on the Grid
Oracle10i - Stores All Your
Data




Complete
Integrated
Max size 8 HB
No LOB size restr.
Relational
Characters, Numbers and Dates
Oracle Text
Text management and search
Oracle interMedia
Multimedia management
Oracle Locator
Location and Proximity Searching
XML DB
Integrated Native XML Database
OCS Files
Low-cost and Easy
Oracle Database 10g –
Align Storage with the
Business
 Problem: Islands of
storage
–
“My storage is 50%
utilized
and growing 30% a
year”
CRM
ERP
DW
Automatic Storage
Management – Dynamically
Provision and Tune Storage
 Portable, high performance
file system
 Eliminates need for
conventional file system and
volume manager
 Automatic mirroring
 Automatic I/O tuning
–
Stripes data across disks to
balance load
ASM Extends SAME Concept
SAME = Stripe and Mirror Everything
–
–
Spread I/Os across as many LUNs as possible
Eliminates manual I/O tuning in static storage
configurations
ASM = Automatic Storage Management
–
–
–
Allows dynamic and online reconfiguration of
storage resources
Efficient relocation of data during rebalance
Eliminate manual I/O tuning in all storage
configurations
Why We Stripe
Unstriped Disks
Striped Disks
Automatic Storage Management Extends SAME
–
–
–
Allows dynamic and online reconfiguration of storage resources
Efficient relocation of data during rebalance
Eliminate manual I/O tuning in all storage configurations
Operational Stack
ASM
TODAY
Tables
Tables
Tablespace
Files
Tablespace
0010 0010 0010 0010 0010
0010 0010 0010 0010 0010
Files
File System
File System
Logical Vol
Logical Vol
Disk Group
Disk Group
 NO mapping required
 Simpler to set up
ASM Objectives
 Easier management of storage resources
 Optimize productivity of DBAs
–
–
–
–
–
Eliminate day to day I/O tuning tasks
Built in best practices
Eliminate database physical configuration layout
Manage disk groups not files
Non-intrusive storage resource addition/reduction
 Common storage management interface
–
–
Works the same on any OS
Same interface for any storage
Disk Groups & Failure Groups
Controller 1
Controller 2
 Storage resources organized into
Disk Groups and Failure Groups
 A Disk Group is a collection of disks
managed as a logical unit in which ASM
files are stored
 Disk Groups assigned by DBAs
 A Failure Group is a set of disks sharing
a common resource whose failure
needs to be tolerated
–
Redundant copies of an extent are
stored in separate Failure Groups
 Failure Groups assigned by DBAs or
automatically by ASM
Failure Group 1 Failure Group 2
Disk Group
Flash Recovery Area
Weekly
Archive
To Tape
 Fully automatic disk based
backup and recovery
–
Set and Forget
 Nightly incremental backup rolls
forward recovery area backup
Nightly Apply
Validated
Incremental
–
–
–
Database Area
Flash Recovery Area
Production DB
Backup of DB &
Archive Logs
Two Independent Disk Systems
–
Changed blocks are tracked
in production DB
Full scan is never needed
Dramatically faster (20x)
Blocks validated to prevent
corruption of backup copy
 Use low cost ATA disk array for
recovery area
Optimized Incremental Backup
 Optimizes incremental
backups
Redo Generation
Redo Log
List of Changed
Blocks
–
 Oracle10i is integrated with
the change tracking file
–
–
Change
Tracking File
1011001010110
0001110100101
1010101110011
Track which blocks have
changed since last backup
Changed blocks are tracked
as redo is generated
RMAN backup automatically
uses changed block list
Flashback Error Correction
Database
Customer
 Recovery at all levels
 Database Level
–
Flashback Database restores
the whole database to time
 Uses Flashback Logs
 Table Level
–
Order
–
Flashback Table restores
rows in a set of tables to time
 Uses UNDO in database
Flashback Drop restores a
dropped table or a index
 Recycle bin for DROPs
 Row Level
–
Flashback Rows restores
rows to time
 Uses Flashback Query
Oracle Database 10g RAC
Capacity on Demand for the
Grid
 Only Cluster Database
that runs Real
Applications and Scales
 Highly Available
 Runs on standard,
low cost servers
 Proven
–
–
Hundreds of
customers
Certified with
leading apps
ERP
CRM
DW
Oracle Database 10g RAC Complete, Integrated
Clusterware
 Complete Oracle cluster
software solution
 Single-vendor support
 Low Cost
–
–
No need to purchase
additional software
Easy to install, manage
 High quality and functionality
across all platforms
 Common event and
management API’s
–
Multi-tier HA & minimal
MTTR
 Support for third-party
clusterware
Services Framework
Cluster Control/Recovery
Messaging and Locking
Connectivity
Benefits of Integrated
Clusterware
 Lower software cost
 Easy
–
–
Deploys in hours not days
Single integrated target for cluster management
provides improved single system image
 Less Risk
–
–
Same high functionality and quality across
platforms
Single vendor support
Software Cloning
“Our administrators spend about 25% of their time on installs and
cloning”
-Verizon Information Services DBA

Reduce manual labor in software life-cycle
–


Automate mass provisioning of reference systems
Intelligent Cloning makes context-specific adjustments
–
–
1
From hours to minutes
DB: home, host name, listener
iAS: IP address, host name, web listener
Select Software (and
Instances) to Clone
Clone to
Selected
Targets
2
3
Update
Inventory
Scalable Software
Maintenance - Automated
Patch Management
 Real-time discovery of new patches
–
Security patch rapid deployment dramatically reduces
vulnerabilities
 Automatic staging and application
–
From hours to minutes
 Rolling RAC upgrade
2
Determine
Applicability
3
Apply Patch
4
1
Patch Published
Update
Inventory
Rolling a Patch on RAC for
10g
Shutdown instance 1
Patch instance 1
Start instance 1
Test the patch
Shutdown instance 2
Patch instance 2
Start instance 2
Shutdown instance 3
Patch instance 3
Start instance 3
Result: Zero Downtime
Oracle Database 10g Ease of
Management
 Self-Managing
Database
 OEM Grid Control
–
–
Grid-wide
operations
Scale from one to
hundreds of
systems with little
incremental cost
Oracle Database 10g
Self-managing Database

Built-in Intelligent Infrastructure
–
–

Automatic Database Diagnostic Monitor
–

Automatic performance diagnostic engine in the
database
Automatic Tuning Optimizer
–


Code instrumentation
Data warehouse to analyze performance of customer
workloads
SQL Profile to tune packaged applications
Automatic PGA and SGA Memory Management
Lots more …
Automatic Workload
Repository

Advisory
Infrastructure
Server-generated Alert
Infrastructure
Automatic Maintenance Task
Infrastructure
Automatic Workload Repository




Automatically collect and
compute important statistics,
SQL workload, feature usage
Direct memory access
Periodically flush snapshots
to disk
Base-lining capability
Primarily build for
automating internal
components
Automatic Workload
Repository
ADDM finds
top problems
MMON
SYSAUX
WR Schema
7:00am
In memory
statistics
7:30am
Snapshot 2
8:00am
Snapshot 3
8:30am
SGA
8:30am
Snapshot 1
Snapshot 4
Oracle10g System Management –
Automatic Diagnostic Monitor
(ADDM)
 Performance expert in
a box
 Automatically
provides databasewide performance
diagnosis, including
RAC
 Pinpoints root cause
and non-problem
areas
 Runs proactively
Oracle10g System Management –
Automatic SGA Management
Online
Users
Buffer Cache
Large Batch
Jobs
Buffer Cache
Large Pool
Large Pool
SQL Cache
SQL Cache
Java Pool
Java Pool
sort
sort
 Only 2 memory
parameters
 Advisor helps
set parameters
 Automatically
resizes with
changes in
SGA Pool workload
 Maximize usage
PGA Pool
of available
memory
Oracle10g System Management –
Self Optimizing SQL Management
Packaged
Applications
High-load
SQL
Custom
Applications
Optimizer
Auto SQL
Tuning
Auto SQL
Analysis
Access
Advisor
SQL
Profile
SQL Advice
Indexes &
MVs
Packaged
Applications
Custom
Applications
Custom
Applications
Well-tuned
SQL
 Automated capture
and identification of
high-load SQL
 Automatic SQL Tuning
 Automatic SQL
Analysis
 SQL Access Advisor
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Oracle Database 10g –
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- Trainer: Stefan Lindblad, Oracle University, EMEA
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