1 © 2005 Julian Dyke Oracle 10.2 RAC New Features Julian Dyke Independent Consultant Web Version...

1 © 2005 Julian Dyke

Oracle 10.2RAC New Features

Julian Dyke

Independent Consultant

Web Version

juliandyke.com

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© 2005 Julian Dykejuliandyke.co

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CLUVFY

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CLUVFY Introduced in Oracle 10.2

Read-only utility that verifies configuration of cluster at each stage of cluster installation

Detects many common configuration errors

Eliminates time-consuming troubleshooting

Supplied with Oracle Clusterware Can be installed separately

Can also be used with Oracle 10.1 Requires -r 10gR1 switch

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CLUVFY Written in Java - requires JRE

Supplied with JRE Alternatively can use existing JRE

Must set CV_JDKHOME environment variable

On Red Hat Linux also requires cvuqdisk package Supplied on Oracle Clusterware CD

rpm --Uvh cvuqdisk-1.0.1-1.rpm

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CLUVFY Checks

stages components

Stage checks Verify all steps for specified stage have been completed

Component checks Verify specified component has been correctly installed

sh runcluvfy.sh -helpsh runcluvfy.sh stage -helpsh runcluvfy.sh comp -help

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CLUVFY Stages include:

-post hwos post check for hardware and operating system

-pre cfs pre-check for CFS setup

-post cfs post-check for CFS setup

-pre crsinst pre-check for Oracle Clusterware installation

-post crsinst post-check for Oracle Clusterware installation

-pre dbinst pre-check for database installation

-pre dbcfg pre-check for database configuration

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CLUVFY Components include:

nodereach Checks reachability between nodes

nodecon Checks node connectivity

cfs Checks CFS integrity

ssa Checks shared storage accessibility

space Checks space availability

sys Checks minimum system requirements

clu Checks cluster integrity

clumgr Checks cluster manager integrity

ocr Checks OCR integrity

crs Checks Oracle Clusterware (CRS) integrity

nodeapp Checks node applications exist

admprv Checks administrative privileges

peer Compares properties with peers

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CLUVFY For example, to check configuration before installing Oracle

Clusterware on node1 and node2 use:

sh runcluvfy.sh stage -pre crsinst -n node1,node2

Checks: node reachability user equivalence administrative privileges node connectivity shared stored accessibility

If any checks fail append -verbose to display more information

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OracleClusterware

File Mirroring

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OCR and Voting Disk Mirroring RAC databases contain

controlfiles datafiles online redo logs server parameter files password files archive log files

In addition RAC clusters contain Oracle Cluster Repository (OCR)

formerly SRVM file Voting Disk

formerly CSS file

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OCR and Voting Disk Mirroring In Oracle 10.1 and below

only one copy of OCR and Voting Disk can be corrupted can be deleted can be inaccessible

loss of either prevents access to all databases in cluster

In Oracle 10.2 and above OCR can be mirrored

maximum two copies Voting Disk can be mirrored

recommended three copies

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OCR and Voting Disk Mirroring

Database Files

Instance 2

Node2

Instance 1

Node1

Database Files

Database Files

OCR

Voting Disk 1

Oracle 10.1

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OCR and Voting Disk Mirroring

OCR Mirror

Voting Disk 2

Database Files

Instance 2

Node2

Instance 1

Node1

Database Files

Database Files

OCR

Voting Disk 1 Voting Disk 3

Oracle 10.2

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DBCADatabaseCloning

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DBCA - Database Cloning Creating a Clone Template

Manage Templates

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DBCA - Database Cloning

Create database template from an existing database (structure and data)

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Choose database from which to create the template

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Specify location where RMAN copies of datafiles will be created.

Specify name and description of template

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Choose locations of database files

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DBCA - Database Cloning Template creation completion message

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DBCA - Database Cloning Creating a Clone Database

Create Database

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Manage Templates

Select nodes on which to create cluster database

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Select template(Template2)

Includes Datafiles = Yes=> Clone

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DBCA - Database CloningSelect Global

Database Name

Select SID

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Select SID

Configure Management Options

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Select SID

Set Passwords

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Select Storage Option(ASM)

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Select ASM Diskgroup(DISKGROUP1)

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Select Oracle-Managed Files (OMF)

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Optionally enable Flash Recovery Area and Archiving

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Optionally enable Flash Recovery Area and Archiving

Specify optional; custom initialization scripts

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Add Services

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Set initialisation parameters

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Configure storage

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Create Database or Generate Database Creation Scripts

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Log files in $ORACLE_HOME/cfgtoollogs/dbca/CLONE

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Thank you for listening

[email protected]

1 © 2005 Julian Dyke Oracle 10.2 RAC New Features Julian Dyke Independent Consultant Web Version...

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