Oracle 10.2
RAC New Features
Julian Dyke
Independent Consultant
Web Version
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Introduced in Oracle 10.2
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Read-only utility that verifies configuration of cluster at each
stage of cluster installation
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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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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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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 -help
sh runcluvfy.sh stage -help
sh runcluvfy.sh comp -help
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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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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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For example, to check configuration before installing Oracle
Clusterware on node1 and node2 use:
sh runcluvfy.sh stage -pre crsinst -n node1,node2
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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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Oracle
Clusterware
File Mirroring
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OCR and Voting Disk Mirroring
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
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
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
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
Oracle 10.1
Instance 1
Instance 2
Node1
Node2
OCR
Voting Disk 1
Database
Files
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Database
Files
Database Files
juliandyke.com
OCR and Voting Disk Mirroring
Oracle 10.2
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Instance 1
Instance 2
Node1
Node2
OCR
OCR Mirror
Voting Disk 1
Voting Disk 2
Voting Disk 3
Database
Files
Database
Files
Database Files
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DBCA
Database
Cloning
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DBCA - Database Cloning
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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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DBCA - Database Cloning
Choose database from which to
create the template
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Specify name and
DBCA - Database Cloning
description of template
Specify location where RMAN
copies of datafiles will be created.
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DBCA - Database Cloning
Choose locations of database files
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DBCA - Database Cloning
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Template creation completion message
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DBCA - Database Cloning
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Creating a Clone Database
Create Database
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DBCA - Database Cloning
Manage Templates
Select nodes on which to
create cluster database
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DBCA - Database Cloning
Select template
(Template2)
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Includes Datafiles = Yes
=> Clone
juliandyke.com
DBCA - Database Cloning
Select Global
Database Name
Select SID
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DBCA - Database Cloning
Select SID
Configure
Management Options
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DBCA - Database Cloning
Select SID
Set Passwords
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DBCA - Database Cloning
Select Storage Option
(ASM)
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DBCA - Database Cloning
Select ASM Diskgroup
(DISKGROUP1)
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DBCA - Database Cloning
Select Oracle-Managed
Files (OMF)
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DBCA - Database Cloning
Optionally enable Flash
Recovery Area and Archiving
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DBCA - Database Cloning
Specify optional; custom
initialization scripts
Optionally enable Flash
Recovery Area and Archiving
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DBCA - Database Cloning
Add Services
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DBCA - Database Cloning
Set initialisation parameters
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DBCA - Database Cloning
Configure storage
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DBCA - Database Cloning
Create Database or Generate
Database Creation Scripts
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DBCA - Database Cloning
Create Database or Generate
Database Creation Scripts
Log files in
$ORACLE_HOME/cfgtoollogs/dbca/CLONE
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DBCA - Database Cloning
Create Database or Generate
Database Creation Scripts
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© 2005 Julian Dyke
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Thank you for listening
info@juliandyke.com
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© 2005 Julian Dyke
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