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ASM TheNextGeneration

TimothyMishek,

ITT

timothymishek@yahoo.com

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Agenda

Introduction

ASMOverview InstallingGridControl

ASMConfigurationAssistant ASMCommandLineInterface IntegrationofClusterReadyServices ADVMandACFS UpgradingASM AdditionsandEnhancementswith11gR2

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SessionGoals Developanunderstandingofallthenewfeatures

introducedin11gR2 HaveabetterunderstandingofwhatASMisand

howitcanbenefityourorganization Understand

how

ASM

works

in

relation

to

disk

storage

Gooverdifferentplanningstrategies Easethefearsometimesassociatedwithanewtechnology BuildconfidencewithallaspectsofASM

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ASMOverview

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WhatisASM? AutomaticStorageManagementorASMisOracles

solutioninsimplifyingstoragemanagement. AllowsforsharedstorageinaRealApplicationClustersenvironment. ASMinstancesonlyallowOracledatabasefilestobe

storedonASMmanagedvolumes. Physicaldiskscanbeaddedorremovedwhilea

databaseisinanopenstate. ASMoffersthreemaintypesofmirroring. AnASMinstancehasthesamelookandfeelasatraditionaldatabaseinstance. AnOracledatabasecaneasilybeupgradedtoASM.

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WhatsNew? ASMisnowpartofthegridcontrolarchitecture Introduction

of

Oracle

Restart ASMconfigurationassistant(asmca)

ASMDynamicVolumeManager(ADVM) ASMclusterfilesystem(ACFS) StorageofOCRandVotingdisksdirectlyonan

ASMdiskgroup NewcommandsaddedtotheASMCommand

LineInterface (ASMCMD) VolumeSnapshots

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WhatsNew?Continued StorageoftheASMspfileondirectlyanASM

diskgroup HotandColddiskregionscanbedefined ThenewSYSASMrole Enhancedsecurity sga_targetparameterisnowavailableforASMinstances

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InstallingGridControl

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InstallationDifferencesfromPreviousVersions

Before11gR2,theASMinstallationwaspartofthedatabaseinstall.

Inpreviousversions,theASMinstallationcould

be

part

of

the

database

home.

TheASMinstallationcouldbeinitsownhome.

OnlytheOracleClusterSynchronizationserviceorCSSwasneededforASM.

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InstallingASMin11gR2 ASMinstallationhastobeinstalledaspartof

thegridcontrolinfrastructure. TheASMhomecannotbeinstalledinthe

databasehome.

TheASMhomemustbeinstalledinthegridcontrolhome.

Clusterservicesarenowinstalledaspartofthegridcontrolinfrastructure.

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InstallingGridControl

Theinitialgridcontrolinfrastructureinstallationscreen

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SettingUpASM

InstallationscreenforsettinguptheASMdiskgroup

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ASMConfigurationAssistant

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ASMCA

ASMConfigurationAssistantisnewto11gR2 UsedforASMadministrativefunctions Create,delete,mount,anddismountdisk

groups ConfigureASMVolumes Create,mount,anddismountASMclusterfilesystems UpgradeASMinstances

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ASMCAInstancesTab

InaRACenvironment,theininstancestabshowsthestatusofeachnode.

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ASMCADiskGroupsTab

TheASMCADiskGroupstaballowsconfigurationoftheASMdiskgroup.

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ASMCAVolumesTab

ASMvolumesareconfiguredontheVolumestab.

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ASMCAACFSTab

ASMClusterFileSystemsareconfiguredonthistab.

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ASMCommandLineInterface

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ASMCMD

Introducedin10gR2asacommandlineinterface

for

ASM

administration

GivesadministratorsanalternativetoqueryingASMinstancesusingSQL*Plus

Additionalcommandsandfunctionalityaddedin11gR2

ASMVolumescanbeconfigured Newlyaddedcommandsforconfiguringsecurity

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ASMCMDAddedCommands

Additionalcommandsareaddedin11gR2.

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VolumeInformation

Volumeinformationisshownusingthenewvolinfo

command.

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VolumeUsage

ASMvolumeusageisshownbyusingthevolstat

command.

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IntegrationofClusterReadyServices

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OracleRestart OracleHighAvailabilityServicesisnowrequiredfor

allASM

installations.

OracleRestartistheclustercomponentforstandaloneinstances.

OracleRestartusestheOracleLocalRepository(OLR)andLocalClusterRepository(OCR).

Clustertools

are

used

for

administration

(srvctl,

crsctletc.).

Ifafailureisdetected,OracleRestartattemptstorestarttheservice.

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OracleRestartConfiguration Configurationfilesolr.locandocr.locpointing

tothelocalOCRandOLRarefound:Linux/etc/oracleSolaris/var/opt/oracle

WindowsRegistryshowsthelocationsoftheOLRandOCR:HKEY_LOCAL_MACHINE\SOFTWARE\Oracle\ocr

HKEY_LOCAL_MACHINE\SOFTWARE\Oracle\olr

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OracleRestartConfiguration Unixinstallations,theocr.locfilehastheline

local_only=TRUE Windowsinstallations,theregistrykey

HKEY_LOCAL_MACHINE\SOFTWARE\Oracle\ocr"local_only"="TRUE

Inadefaultinstallation,theolrandocrfilesarecreatedinthegridhomeundercdata/localhost.

TheOracleUniversalInstallerincludingtheroot.shcreatestheentireconfiguration.

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CreatingOracleRestartManually Theroot.shfilecreatesOracleRestartduring

theGridinstallation.

Cluster components created immediately after the root.sh is run

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CreatingtheListener

The listener is created and started using the srvctl command.

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CreatingASMinOracleRestart

An existing ASM instance is added to the Oracle Restart configuration.

If an spfile is already in place on the ASM instance, add p .

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InitialASMConfiguration

The initial ASM configuration shows ASM without an spfile defined.

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ASMConfiguration In11gR2,thespfileforASMlivesdirectlyontheDisk

Group. OracleRestartautomaticallyregistersthespfile

whenitiscreatedinSQL*Plus. TheASMinstanceneedstobeshutdownand

restartedwiththepfile.SQL> startup pfile=initasm.ora;

TheASMspfilecannowbecreatedontheDiskGroup.

SQL> create spfile=+DATA from pfile=initasm.ora

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ASMCompleted

After the creation of the spfile, the new location is now showing up.

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DatabaseAddedtoOracleRestart

The database is added to finalize the configuration using srvctl add database

-d RMOUG -n RMOUG -o /u01/app/oracle/product/11.2.0/db_1 -p+DATA/rmoug/spfilermoug.ora -s open -t immediate

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StartingTheDatabase

The database is started using srvctl start database -d RMOUG. The

configuration is complete.

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ADVMandACFS

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ADVMandACFS ASMnowoffersavolumemanagerforthe

storageofregularoperatingsystemfiles. Introducedin11gR2 ASMDynamicVolumeManager(ADVM) ASMclusterfilesystem(ACFS) ora.registry.acfs nodeapplicationonlyavailableforRAC

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ACFSDriver Theacfsdriverhastobeloadedastheroot

userusingtheacfsload command. OnaRACserver,theclusterloadsthedriverusingtheora.registry.acfs nodeapplication.

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CreateVolumeusingASMCA

The ASM volume is created under the Volumes tab.

h l

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CreateTheASMVolumeusingASMCA

Using asmca, the volume name ACFS is created here.

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NewVolume

The Volumes tab shows the newly created volume.

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CreateACFS

The ASM Cluster File Systems tab is used to create the clustered file system.

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CreateACFS

The Create ASM Cluster File System screen shows configuration options.

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ACFSCommandOptions

The show command button shows the commands to create the cluster file system.

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ACFSCompleted

The ASM Cluster File Systems tab shows the completed clustered filesystem in a dismounted state.

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MountACFS

The mount all command needs to be run on any standalone systemas the root user to mount all acfs file systems. RAC mounts

registered file systems using the ora.registry.acfs node application.

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ACFSMounted

The clustered file system is mounted and can be used by the operating system.

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ACFSMountedandAvailable

The file system is mounted and showing up as a mount point to the operating

system. If this were a RAC node, the file system /acfs would be shared.

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UpgradingASM

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UpgradeOptions Ifinitiallyinstallingthegridcontrol

infrastructure,thereisanoptiontoupgradeASMtothecurrentversion. AnalternateoptionrequiresusingtheASM

configurationassistant(asmca). Aslongasthedatabasecompatibleversionis

thesameversionasthedatabase,ASMcanbeupgradedtosupportthepreviousdatabaserelease.

O l G id C l I ll

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OracleGridControlInstaller

ASM can be upgraded during the grid control installation.

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UpgradeASMusingASMCA

If asmca detects a previous version, ASM can be upgraded here.

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AdditionsandEnhancements

11gR2 Additions and

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11gR2AdditionsandEnhancements

Introducedin11gR1,thesysasmroleallowsfulladministrativefunctions.

Enhancedsecurity Hot

and

cold

regions

can

be

defined

on

disks.

ThespfilefortheASMinstanceisnowabletobestoreddirectlyonanASMdiskgroup.

SizingoftheSGAnowsupportsthesga_targetparameter.

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SessionSummaryLookingahead,ASMwillcontinuetogainpopularitywithdatabaseprofessionals. NotonlyisASMaprovenstoragesolutionforclusteredenvironments,butisprovenforthegeneralmanagementofdatabasefileandfilesystemstorage. Giveitatry!

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Questions?

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ThankYou!TimothyMishek

timothymishek@yahoo.com