Virtualization Demystified Database Virtualization – The Final Frontier

VMware And OVM

About Charles Kim ¡ Over 20 years of Oracle Expertise, RAC, Data Guard, ASM, RMAN, Shareplex

¡  IOUG Virtualization Executive Committee (Vendor Management Co-Chair)

¡  Contributing Author of Oracle ASM 11gR2 or 12c with Oracle Press

¡  Blog site: http://dbaexpert.com/blog + http://dataguardbook.com

¡  VMware Certified Professional, Oracle Certified RAC Expert

Oracle Maximum Availability Architecture (MAA)

Real Application Clusters

Flashback RMAN & Oracle Secure Backup ASM Data Guard Streams

Audience Poll

¡ How many are running RH 4 or 5 or 6, OEL 4 or 5 or 6, SUSE or OTHER?

¡ How many are running RAC on Linux ¡ How many are running 10g, 11g R1, 11g R2 ¡ How many are running VM for databases …VMWARE?  

OVM?  2.2? 3.0.x? RAC on VM?

¡ How many are DBAs?  SAs?  Developers? ¡ How many are running VM on laptops or personal

desktops?

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Agenda ¡  Evolution of the Virtual DBA

¡  Introduction – Level Setting

¡  Virtualization – Understanding how virtualization works

¡  How VMs Work

¡  Key Virtualization Features

¡  Oracle VM and VMware features

¡ The Virtualization Infrastructure

Evolution of the Virtual DBA (vDBA)

Kind of DBA Timeline

CLI DBA Early 90’s DBAs

GUI DBA Late 90’s and Dot Com

Google DBA Dot Com and 2000’s

iDBA Dot Com, IOUG iDBA Master Curriculum

RAC DBAs 2000+ after 9.2 (but major spike with 10.2)

DMA 2010+ Database Machine Administrator

vDBA / vRAC DBA 2010+ Evolving role of a DBA in the virtual world

Differences in the Hypervisors VMware OVM

Para-virtualized I/O and NET3 drivers Para-virtualization

Proprietary and Tuned Tuned from Open Source Xen

Native Guest Kernel Guest Kernel is modified

Domain 0 (Dom0)

Guest VM Domain U (Guest VM)

BP leverages paravirtualized drivers Can use paravirtualized drivers

x86 Architecture

OV Server 3.x

Dom0

ESXi 5.x VMM Resource Scheduler

x86 Architecture

Drivers Drivers Drivers

Drivers

domU

domU VM Agent

Assigning Resources to VMs

vCPU vNIC vMEM vDisk vDisk vCPU vNIC vMEM

Simplifies Networking

Public LAN

Private LAN

Management LAN

Public LAN

Private LAN

vSwitch or xen Bridge

Bare Metal

eth0 = private Interconnect

eth1 = public

network

Guest VM

vSwitch or xen Bridge

Benefits of Virtualization ¡ Less errors and service requests ¡ Reduce downtime for maintenance, repairs and upgrades ¡ Faster team response times and agility ¡ Significantly improved DEV/QA and TEST environment,

equivalent of being to add multiple DEV/QA and TEST systems on the fly

¡ Faster provisioning and on-demand resource allocation ¡ Less administration and higher availability through virtualization ¡ Reduce Oracle licensing costs and complexity ¡  Reduce CapEx 60%, OpEx 30%, Energy costs 80%

§  Oracle Single Instance and RAC is significantly better in a VM

Virtualization Advantages – vMotion/Live Migration

Virtualization Advantages – vMotion/Live Migration

Virtualization Advantages – vMotion/Live Migration

Memory structures

Virtualization Advantages – vMotion/Live Migration

Virtualization Advantages - DRS

Virtualization Advantages - HA

Virtualization Lingo VMware OVM

DRS DRS

HA HA

vMotion Secure Live Migration

ESXi OV Server

vCenter OV Manager

vSphere client (Microsoft, iPad) Web Brower based login to OV Manager

DPM DPM

VMFS OCFS2

Snapshot Snapshot

Cloning Cloning

Thin/Thick Provisioning Thin/Thick Provisioning

VMware Tools

Virtualization Lingo .. More VMware OVM

Oracle VM Agent

Integration with Grid Control 10.2.0.5+

Datastores Storage Repositories

Storage vMotion Not the same but Storage Connect

Server Pool Server Pool

Oracle VM Templates (90+) – MOS: 12694014

vCloud Director Virtual Assembly Builder

Update Manager

esxtop/resxtop xm top

Console Access from vCenter TightVNC for Console Access

Host Profiles

Common VM Best Practices (Applies to VMware and OVM) ¡ Huge Pages (cannot use Oracle AMM) ¡ Jumbo Frames (maybe < 10% more important for 10GbE)

¡ Use templates of preconfigured Oracle

¡ For Tier 1 10GbE normally the right decision versus 1Gb

¡ Properly size your VMs

¡ Be able to manage the VMs you create

¡ File Block Alignment – impact 10 – 40%

Virtualization Journey on the Yellow Brick Road

PROD

Business Critical

Mission Critical

Physical to Virtual

Red Hat and OL Templates

Oracle Infrastructure VMs Linux Infrastructure VMs

Virtualization Infrastructure

Oracle Business/Mission Critical Database VMs

Staging Server

Swing file system from source server to staging server (Same version OS, same version of DB binaries)

Synchronize Stage Server Database Image With Production Data

Export Queue

Create production image copy that is in sync with the source database Target outage window: Near Zero Downtime

Capture Queue

1.  Open database 2.  Activate the new

config for schemas

No SPLEX

Import Process

Stopped Post

Queue

Post Queue holds all transactions since activation of new config file

All new transactions are being piled up in the post queue

ASM

Perform RMAN Image Copy Back to file system

①  Perform TTS Metadata import

②  Perform no rows import ③  Perform schema compares ④  Disable triggers, disable

cascade delete constraints

①  Start Post

②  Activate reverse config for schemas

Physical to Virtual Migration (Re-Platform) Shareplex Reverse Replication for Zero Risk

ASM

scp database files source to target database server

①  Create users, roles,profiles

②  RMAN convert of endian format from AIX to Linux

①  Disable triggers ②  Disable cascade delete constraints

Questions