Oracle 10g RAC

7/30/2019 Oracle 10g RAC

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A Practical Guide to Oracle 10g RAC

Its REAL Easy!

Gavin Soorma,

Emirates Airline, DubaiSession# 106


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Agenda RAC concepts

Planning for a RAC installation

Pre Installation steps Installation of 10g R2 Clusterware

Installation of 10g R2 Software

Creation of RAC database

Configuring Services and TAF

Migration of single instance to RAC


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What Is a RAC Cluster? Nodes

Interconnect

Shared disk subsystem

Instances

Database

NodeNode

Interconnect

Disks


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Database vs InstanceRAC Cluster consists of .

One or more instances

One Database residing on shared storage

Node 1

Instance 1

Node 2

Instance 2Interconnect

SharedStorage

LocalDisk

LocalDisk

Database


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Why RAC? High Availability survive node and instance failures

Scalability Add or remove nodes when needed

Pay as you grow harness the power of multiple low-costcomputers

Enable Grid Computing

DBAs have their own vested interests!


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What is Real Application Clusters? Two or more interconnected, but independent servers

One instance per node

Multiple instances accessing the same database

Database files stored on disks physically or logically connected to

each node, so that every instance can read from or write to them


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A RAC Database whats different?Contents similar to single instance database except

Create and enable one redo thread per instance

If using Automatic Undo Management also require one UNDO tablespaceper instance

Additional cluster specific data dictionary views created by

running the script $ORACLE_HOME/rdbms/admin/catclust.sql

New background processes

Cluster specific init.ora parameters


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RAC specific Background Processes LMON Global Enqueue Service Monitor

LMD0 Global Enqueue Service Daemon LMSx Global Cache Server Processes

LCK0 Lock Process

DIAG Diagnosability Process


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RAC init.ora Parameters*.db_cache_size=113246208*.java_pool_size=4194304

*.db_name='racdbracdb2.instance_number=2racdb1.instance_number=1*.log_archive_dest_1='LOCATION=USE_DB_RECOVERY_FILE_DEST'racdb2.thread=2racdb1.thread=1

*.undo_management='AUTO'racdb2.undo_tablespace='UNDOTBS2'racdb1.undo_tablespace='UNDOTBS1'


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10g RAC Implementation Steps Hardware Network Interface Cards, HBA cards etc

Interconnects Physical cable, Gigabit Ethernet switch

Network Virtual IP addresses Plan the type of shared storage (ASM, OCFS etc)

Download latest RPMs ASM, OCFS

Install Clusterware (Cluster Ready Services)

Install 10g RAC software Create RAC database

Configure Services and TAF ( Transparent Application Failover)


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RAC Database Storage Oracle files (control file, data files, redo log files)

Server Parameter File ( SPFILE)

Archive log files

Flash Recovery Area

Voting File

Oracle Cluster Registry (OCR) File

OCFS version 2.x will support shared ORACLE_HOME


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Oracle Cluster Registry File OCR contains important metadata about RAC instances and nodes

that make up the cluster

Needs to be on a shared storage device

About 100MB in size

In Oracle 10g Release 2, higher availability for this criticalcomponent is provided by enabling a second OCR file location


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Voting Disk File Contains information about cluster membership

Used by CRS to avoid split-brain scenarios if any node losescontact over the interconnect

Mandatory to be located on shared storage

Typically about 20MB in size

Can be mirrored in Oracle 10g Release 2


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Shared Storage ConsiderationsMandatory for:

Datafiles, Redo Log Files, Control Files, SPFile

Optional for:

Archive logfiles, Executables, Binaries, Network Configurationfiles

Supported shared storage

NAS (network attached storage)

SAN ( storage area network)Supported file storage

Raw volumes

Cluster File System

ASM


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Shared Storage Considerations Archive log files cannot be placed on raw devices

CRS Files ( Voting Disk/Cluster Registry (OCR) cannotbe stored on ASM

Software is installed on regular file system local to each node

Database files can exist on raw devices, ASM orCluster File System (OCFS)


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Network Requirements

Each node must have at least two network adapters; one for thepublic network interface and one for the private networkinterface (the interconnect).

The public network adapter must support TCP/IP

For the private network, the interconnect must preferably be aGigabit Ethernet switch that supports UDP. This is used forCache Fusion inter-node connection

Host name and IP addresses associated with the publicinterface should be registered in DNS and /etc/hosts


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IP Address RequirementsFor each Public Network Interface an IP address and host

name registered in the DNS

One unused Virtual IP address and associated host name

registered in the DNS for each node to be used in the cluster

A private IP address and optional host name for each privateinterface

Virtual IP addresses is used in the network config files


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Virtual IP Addresses VIPs are used in order to facilitate faster failover in the event of

a node failure

Each node not only has its own statically assigned IP addressas well as also a virtual IP address that is assigned to the node

The listener on each node will be listening on the Virtual IP and

client connections will also come via this Virtual IP.

Without VIP, clients will have to wait for long TCP/IP timeoutbefore getting an error message or TCP reset from nodes thathave died


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Sample /etc/hosts fileracdb1:/opt/oracle> cat /etc/hosts

# Do not remove the following line, or various programs# that require network functionality will fail.#127.0.0.1 itlinuxbl53.hq.emirates.com itlinuxbl53

localhost.localdomain localhost57.12.70.59 itlinuxbl54.hq.emirates.com itlinuxbl5457.12.70.58 itlinuxbl53.hq.emirates.com itlinuxbl53

10.20.176.74 itlinuxbl54-pvt.hq.emirates.com itlinuxbl54-pvt10.20.176.73 itlinuxbl53-pvt.hq.emirates.com itlinuxbl53-pvt57.12.70.80 itlinuxbl54-vip.hq.emirates.com itlinuxbl54-vip57.12.70.79 itlinuxbl53-vip.hq.emirates.com itlinuxbl53-vip


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Setup User equivalence using SSH To install on all nodes in the cluster by launching OUI on one node

Will not prompt for password

OUI will use ssh or rcp to copy files to remote nodes

ssh-keygen -t dsa

cat id_dsa.pub > authorized_keys

Copy authorized_keys from this node to other nodes

Run the same command on all nodes to generate theauthorized_keys file

Finally all nodes will have the same authorized_keys file


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Setting up User EquivalenceITLINUXBL53ssh-keygen -t dsa

cat id_dsa.pub > authorized_keys

scp authorized_keys itlinuxbl54:/opt/oracle

ITLINUXBL54ssh-keygen -t dsa

cat id_dsa.pub >> authorized_keys

scp authorized_keys itlinuxbl53:/opt/oracle/.ssh

ssh itlinuxbl54 hostname

ssh itlinuxbl53 hostname


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Configure the hang check timer Monitors the Linux kernel for hangs If hang occurs module reboots the node

Define how often in seconds module checks for hangs Define how long module waits for response from kernel

[root@itlinuxbl53 rootpre]#/sbin/insmod hangcheck-timer

hangcheck_tick=30 hangcheck_margin=180Using /lib/modules/2.4.21-37.ELsmp/kernel/drivers/char/hangcheck-timer.o

[root@itlinuxbl53 rootpre]# lsmod | grep hanghangcheck-timer 2672 0 (unused)


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Case Study Environment Operating System: LINUX X86_64 RHEL 3AS

Hardware: HP BL25P Blade Servers with 2 CPUs (AMD 64 bitprocessors) and 4 GB of RAM

Oracle Software: Oracle Database 10g Enterprise EditionRelease 10.2.0.1.0 - 64bit

Two Node Cluster: ITLINUXBL53.hq.emirates.com,ITLINUXBL54.hq.emirates.com

Shared Storage: OCFS for Cluster Registry and Voting Disks.ASM for all other database related files

Database Name: racdb

Instance Names: racdb1, racdb2


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Oracle 10g CRS Install Oracle 10g Clusterware Cluster Ready Services

Oracles own full-stack clusterware coupled with RAC

Replaces earlier dependency on third-party clusterware Oracle CRS replaces the Oracle Cluster Manager (ORACM) in

Oracle9iRAC

CRS must be installed prior to the installation of Oracle RAC


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CRS Installation Key Steps Voting Disk about 20MB (Oracle9i Quorum Disk)

Maintains the node heartbeat and avoids the node split-brainsyndrome

Oracle Cluster Registry about 100MB

Stores cluster configuration and cluster database information

Private Interconnect Information

Select the network interface for internode communicationA Gigabit Ethernet interface is recommended

Run root.sh

Start CRS daemon processes evmd, cssd, crsd


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Oracle Cluster File System Shared disk cluster file system for LINUX and Windows

Improves management of data by eliminating the need to manageraw devices

Can be downloaded from OTN

http://oss.oracle.com/projects/ocfs

OCFS 2.1.2 provides support on Linux for Oracle Softwareinstallation as well
http://oss.oracle.com/projects/ocfshttp://oss.oracle.com/projects/ocfs


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Install the OCFS RPMs[root@itlinuxbl54 recyclebin]# rpm -ivh ocfs-support-1.1.5-1.x86_64.rpmPreparing... ########################################### [100%]

1:ocfs-support ########################################### [100%]

[root@itlinuxbl54 recyclebin]# rpm -ivh ocfs-tools-1.0.10-1.x86_64.rpmPreparing... ########################################### [100%]

1:ocfs-tools ########################################### [100%]

[root@itlinuxbl54 recyclebin]# rpm -ivh ocfs-2.4.21-EL-smp-1.0.14-1.x86_64.rpm

Preparing... ########################################### [100%]1:ocfs-2.4.21-EL-smp ########################################### [100%]


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OCFSTOOL Generate Config


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The OCFS Configuration File[root@itlinuxbl53 etc]# cat /etc/ocfs.conf

## ocfs config

# Ensure this file exists in /etc

#

node_name = itlinuxbl53.hq.emirates.com

ip_address = 10.20.176.73

ip_port = 7000

comm_voting = 1

guid = 5D9FF90D969078C471310016353C6B23


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OCFSTOOL Format Partition


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OCFSTOOL Mount File System


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ASM Architecture

ClusteredPool of Storage

ASM Instance ASM Instance

ClusteredServers

RACDatabase

Oracle

DB Instance

Oracle

DB Instance

Disk Group


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Install the ASMLIB RPMs[root@itlinuxbl53 recyclebin]# rpm -ivh oracleasm-support-2.0.1-1.x86_64.rpmPreparing... ########################################### [100%]

1:oracleasm-support ###########################################[100%][[root@itlinuxbl53 recyclebin]# rpm -ivh oracleasm-2.4.21-37.ELsmp-1.0.4-

1.x86_64.rpmPreparing... ########################################### [100%]

1:oracleasm-2.4.21-37.ELs###########################################

[root@itlinuxbl53 recyclebin]# rpm -ivh oracleasmlib-2.0.1-1.x86_64.rpmPreparing... ########################################### [100%]

1:oracleasmlib ###########################################[100%]


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Creating the ASM Disks[root@itlinuxbl53 init.d]# ./oracleasm createdisk VOL1 /dev/sddlmab1Marking disk "/dev/sddlmab1" as an ASM disk: [ OK ]

[root@itlinuxbl53 init.d]# ./oracleasm createdisk VOL2 /dev/sddlmac1Marking disk "/dev/sddlmac1" as an ASM disk: [ OK ]

[root@itlinuxbl53 init.d]# ./oracleasm createdisk VOL3 /dev/sddlmaf1Marking disk "/dev/sddlmaf1" as an ASM disk: [ OK ]

[root@itlinuxbl53 init.d]# ./oracleasm listdisksVOL1VOL2VOL3

[root@itlinuxbl54 init.d]# ./oracleasm scandisksScanning system for ASM disks: [ OK ]


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The Cluster Verify Utility(cluvfy) Perform pre-installation and post-installation checks at

various stages of the RAC installation Available in 10g Release 2

./runcluvfy.sh comp nodereach -n itlinuxbl53,itlinuxbl54verbose

./runcluvfy.sh stage -pre crsinst -n itlinuxbl53,itlinuxbl54verbose

./runcluvfy.sh comp nodecon -n itlinuxbl53,itlinuxbl54verbose

./runcluvfy.sh stage -post hwos -n itlinuxbl53 -verbose


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Install the cvuqdisk RPM for cluvfy[root@itlinuxbl53 root]# cd /opt/oracle/cluster_cd/clusterware/rpm

[root@itlinuxbl53 rpm]# ls

cvuqdisk-1.0.1-1.rpm

[root@itlinuxbl53 rpm]# export CVUQDISK_GRP=dba

[root@itlinuxbl53 rpm]# rpm -ivh cvuqdisk-1.0.1-1.rpmPreparing... ###########################################

[100%]

1:cvuqdisk ###########################################[100%]


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10g Clusterware Installation


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Prerequisites Validation


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Configuring the 10g RAC Cluster


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Configuring the 10g RAC Cluster


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Configuring the Network Interfaces


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Oracle Cluster Registry (OCR)


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Mirroring the OCR


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Voting Disk


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10g Clusterware OUI Remote Installation


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10g Clusterware root.sh


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Configuration Assistants


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10g RAC phase one complete!


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Verifying the Oracle ClusterwareInstallationCheck node reachability

[oracle@itlinuxbl53 bin]$ ./olsnodes -n

itlinuxbl53 1

itlinuxbl54 2

Check for Clusterware processes

psef |grep crs

psef |grep css

psef |grep evm

Check the health of the CRS stack

./crsctl check crs


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10g RAC Software Installation


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10g RAC Installation


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10g RAC Software InstallationRemote Node Installation


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Creating the RAC Database using DBCA


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Configuring ASM


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Creating the ASM Instances


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Creating the ASM Disk Groups


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DBCA is also Cluster aware


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Enabling Flashback & Archive

logging

Archive log files preferably need to be located onshared storage in this case the ASM Disk Group

SQL> alter system set db_recovery_file_dest_size=2G scope=bothsid='*';

SQL> alter system set db_recovery_file_dest='+DG1' scope=bothsid='*';

SQL> alter system setlog_archive_dest_1='location=USE_DB_RECOVERY_FILE_DEST'scope=both sid='*';

SQL> shutdown immediate;

Note: shutdown the other instances as well


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Enabling Flashback & Archive

logging

Connect to one of the instances in the RAC cluster and mountthe instance

SQL> startup mount;

SQL> alter database archivelog;

SQL> alter database open;

Startup other instances in the RAC cluster as well

SQL> archive log list

Database log mode Archive Mode

Automatic archival Enabled

Archive destination USE_DB_RECOVERY_FILE_DEST

Oldest online log sequence 15

Next log sequence to archive 16

Current log sequence 16


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Services Logically group consumers who share common attributes like

workload, a database schema or some common applicationfunctionality

Manage client load balancing Manage server-side load balancing

Connect-time failover with TAF

Controlled by tnsnames.ora parameters FAILOVER=ON,FAILOVER_MODE, METHOD

Managed via DBCA or SRVCTL commands


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Configuring Services


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Managing services (srvctl)

racdb2:/opt/oracle/product/10.2.0/db/bin>srvctl status asm -n itlinuxbl53ASM instance +ASM1 is running on node itlinuxbl53.

racdb2:/opt/oracle/product/10.2.0/db/bin>srvctl config database -d racdbitlinuxbl53 racdb1 /opt/oracle/product/10.2.0/db

itlinuxbl54 racdb2 /opt/oracle/product/10.2.0/db

racdb2:/var/opt/oracle>srvctl start database -d racdbracdb2:/var/opt/oracle>srvctl status database -d racdbInstance racdb1 is running on node itlinuxbl53Instance racdb2 is running on node itlinuxbl54

racdb2:/var/opt/oracle>srvctl config service -d racdbracdb_blade53 PREF: racdb1 AVAIL: racdb2racdb_blade54 PREF: racdb2 AVAIL: racdb1

racdb2:/var/opt/oracle>srvctl status service -d racdb -s racdb_blade53Service racdb_blade53 is running on instance(s) racdb1


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Transparent Application Failover (TAF) TAF defined by FAILOVER_MODE parameter

TYPE=SESSION

- User does not need to reconnect- Session failed over to another available instance in the list

- But SQL statements in progress will have to be

reissued

TYPE=SELECT

- Query will be restarted after failover

- Rows not fetched before failover will be retrieved


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Transparent Application Failover (TAF)Connection modes METHOD=BASIC or PRECONNECT

BASIC

- After failover connection must reconnect to next address in the list- Additional time to failover

PRECONNECT- Session is opened against all addresses in the list

- Only one is used others remain connected- Faster failover with preconnected sessions- More memory resources consumed by preconnected sessions onother nodes


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tnsnames.ora for RACClient-side load balancing

ERP =

(DESCRIPTION =

(LOAD_BALANCE = ON)

(FAILOVER=ON)

(ADDRESS_LIST =(ADDRESS = (PROTOCOL = TCP)(HOST = rac1vip)(PORT = 1521))

(ADDRESS = (PROTOCOL = TCP)(HOST = rac2vip)(PORT = 1521)) (CONNECT_DATA =(SERVICE_NAME = ERP.WORLD)(FAILOVER_MODE=(TYPE=SELECT)(METHOD=BASIC))

Server-side load balancing

*.REMOTE_LISTENERS=RACDB_LISTENERS init.ora parameter

RACDB_LISTENERS=(DESCRIPTION=(ADDRESS=(PROTOCOL = TCP)(HOST = rac1vip)(PORT = 1521))(ADDRESS = (PROTOCOL = TCP)(HOST =rac2vip)(PORT = 1521))


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Recovery and RACSQL> INSERT INTO SH.MYOBJECTS SELECT * FROM DBA_OBJECTS ;

SQL> DELETE FROM SH.MYOBJECTS;

SQL> COMMIT;

Now get the log sequence .

SQL> SELECT SEQUENCE#, THREAD#, STATUS FROM V$LOG;

SEQUENCE# THREAD# STATUS

---------- ---------- ----------------

9 1 INACTIVE

10 1 CURRENT

4 2 ACTIVE

5 2 CURRENT


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Recovery and RAC (contd)

RMAN> LIST BACKUP OF DATABASE SUMMARY;

List of Backups===============Key TY LV S Device Type Completion Time #Pieces #Copies Compressed Tag------- -- -- - ----------- --------------- ------- ------- ---------- ---12 B F A DISK 05-FEB-06 1 1 NO BACKUP_RACDB.HQ.EM_020506082809

Connect to instance racdb2

RMAN> LIST BACKUP OF DATABASE SUMMARY;

List of Backups===============Key TY LV S Device Type Completion Time #Pieces #Copies Compressed Tag------- -- -- - ----------- --------------- ------- ------- ---------- ---12 B F A DISK 05-FEB-06 1 1 NO BACKUP_RACDB.HQ.EM_020506082809

Since the same control files are used by both instances RACDB1 and RACDB2(same db RACDB) the output is the same on both sides.


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srvctl stop database -d RACDBsrvctl start database -d RACDB -o mount

export ORACLE_SID=racdb1

run {set until logseq 10 thread 1;set autolocate on;allocate channel c1 type disk;

restore database ;recover database ;release channel c1;}


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Starting restore at 05-FEB-06

channel c1: starting datafile backupset restorechannel c1: specifying datafile(s) to restore from backup setrestoring datafile 00001 to +DG1/racdb/datafile/system.256.1..

..piece handle=+DG1/racdb/backupset/2006_02_05/nnndf0_tag20060205t101703_0.665.7 tag=TAG20060205T101703channel c1: restore completeFinished restore at 05-FEB-06

Starting recover at 05-FEB-06starting media recovery

archive log thread 1 sequence 9 is already on disk as file +DG1/racdb/archivelog/2006_02_05/thread_1_seq_9.653.7

archive log thread 2 sequence 4 is already on disk as file +DG1/racdb/archivelog/2006_02_05/thread_2_seq_4.662.7

RMAN> sql ' alter database open resetlogs';


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Migrate a Single-instance database to

RAC

Create the directory structure for the database files and archivelog files on the OCFS file system

$ cd /ocfs/oradata/

$ mkdir gavin

$ cd /ocfs/oradata/gavin

$ mkdir arch


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Migrate a Single-instance database toRAC Backup the current control file to trace

SQL> alter database backup controlfile to trace;

Edit the CREATE CONTROLFILE script to change the locationof all the datafiles and redo log files to the OCFS file system


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Migrate a Single-instance database toRACCREATE CONTROLFILE REUSE DATABASE "GAVIN" NORESETLOGS ARCHIVELOG

MAXLOGFILES 16MAXLOGMEMBERS 3MAXDATAFILES 100

MAXINSTANCES 8MAXLOGHISTORY 454LOGFILEGROUP 1 '/ocfs/oradata/gavin/redo01.log' SIZE 10M,GROUP 2 '/ocfs/oradata/gavin/redo02.log' SIZE 10M,GROUP 3 '/ocfs/oradata/gavin/redo03.log' SIZE 10M

-- STANDBY LOGFILEDATAFILE

'/ocfs/oradata/gavin/system01.dbf','/ocfs/oradata/gavin/undotbs01.dbf','/ocfs/oradata/gavin/sysaux01.dbf','/ocfs/oradata/gavin/users01.dbf','/ocfs/oradata/gavin/example01.dbf'

CHARACTER SET WE8ISO8859P1;


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Migrate a Single-instance database toRAC Shutdown the database and copy the files from the original

location to the OCFS location

$ cd /u01/ORACLE/gavin/

$ ls

arch control03.ctl redo02.log system01.dbf users01.dbf

control01.ctl example01.dbf redo03.log temp01.dbfcontrol02.ctl redo01.log sysaux01.dbf undotbs01.dbf

$ cp *.* /ocfs/oradata/gavin


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Migrate a Single-instance database toRAC Change the location of the control files in the init.ora

*.control_files='/ocfs/oradata/gavin/control01.ctl','/ocfs/oradata/gavin/control02.ctl','/ocfs/oradata/gavin/control03.ctl

Run the script to recreate the controlfile

SQL> startup nomount;

SQL> @crectl


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Migrate a Single-instance database toRACNote that the new location of the datafiles of the database is nowthe shared OCFS file system

SQL> select name from v$datafile;

NAME

--------------------------------------------------------------------------------

/ocfs/oradata/gavin/system01.dbf

/ocfs/oradata/gavin/undotbs01.dbf/ocfs/oradata/gavin/sysaux01.dbf

/ocfs/oradata/gavin/users01.dbf

/ocfs/oradata/gavin/example01.dbf


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Migrate a Single-instance database toRAC Create the cluster specific data dictionary views by running

the catclust.sql script

SQL> @?/rdbms/admin/catclust.sql


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Migrate a Single-instance database toRAC Each instance in the cluster needs to have access to its own

thread of online redo log files.

Create another thread of online log files

SQL> alter database add logfile thread 22 group 4 ('/ocfs/oradata/gavin/redo04.log') size 10m,3 group 5 ('/ocfs/oradata/gavin/redo05.log') size 10m,4 group 6 ('/ocfs/oradata/gavin/redo06.log') size 10m;

Database altered.

Enable the thread

SQL> alter database enable public thread 2;Database altered.


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Migrate a Single-instance database toRAC Each instance needs to have its own dedicated undo

tablespace as well

SQL> create undo tablespace undotbs2 datafile

2 '/ocfs/oradata/gavin/undotbs02.dbf' size 200m;

Tablespace created


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Migrate a Single-instance database toRAC Make the following changes to the Init.ora parameter file:

ADD the following entries

*.cluster_database=TRUE*.cluster_database_instances=2gavin1.instance_name=gavin1gavin2.instance_name=gavin2gavin1.instance_number=1gavin2.instance_number=2gavin1.thread=1gavin2.thread=2gavin1.undo_tablespace=UNDOTBS1gavin2.undo_tablespace=UNDOTBS2*.remote_listener='LISTENERS_GAVIN'


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Migrate a Single-instance database toRACMake the following changes to the Init.ora parameter file:

EDIT the following entries

gavin.__db_cache_size=171966464

gavin.__java_pool_size=8388608

gavin.__large_pool_size=4194304

gavin.__shared_pool_size=75497472

Change to ...

*.__db_cache_size=171966464

*.__java_pool_size=8388608

*.__large_pool_size=4194304

*.__shared_pool_size=75497472


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Migrate a Single-instance database toRAC Change the archive log destination to the shared

disk as all instances need access to the archive log

files generated by each individual instance.

*.log_archive_dest_1='LOCATION=/ocfs/oradata/gavin/arch/

Create the password file on each node

$ cd $ORACLE_HOME/dbs

$ orapwd file=orapwgavin1 password=oracle


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Migrate a Single-instance database to

RAC

Add the following lines to the tnsnames.ora file onBOTH NODES

LISTENERS_GAVIN =

(ADDRESS_LIST =

(ADDRESS = (PROTOCOL = TCP)(HOST =

hqlinuxrac101.hq.emirates.com)(PORT = 1521))(ADDRESS = (PROTOCOL = TCP)(HOST =hqlinuxrac102.hq.emirates.com)(PORT = 1521))

)


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Migrate a Single-instance database toRAC Create the spfile which will be used by both

instances on the shared disk storage as well

SQL> create spfile='/ocfs/oradata/gavin/spfilegavin.ora' from2 pfile='initgavin.ora';

Create the init.ora for the instance gavin1 only add

one line with the SPFILE value pointing to the spfilewe created on the OCFS file system

$ cat initgavin1.oraSPFILE=/ocfs/oradata/gavin/spfilegavin.ora

Note: Do the same on the other node for the instance gavin2


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Migrate a Single-instance database toRAC Start the instance on both nodes first on Hqlinux05 and then

on Hqlinux06

SQL> select name from v$datafile;

NAME--------------------------------------------------------------------------------/ocfs/oradata/gavin/system01.dbf/ocfs/oradata/gavin/undotbs01.dbf/ocfs/oradata/gavin/sysaux01.dbf/ocfs/oradata/gavin/users01.dbf/ocfs/oradata/gavin/example01.dbf

/ocfs/oradata/gavin/undotbs02.dbf

SQL> select host_name from v$instance;HOST_NAME----------------------------------------------------------------hqlinux06.hq.emirates.com


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Migrate a Single-instance database toRAC Using the SRVCTL commands to configure services

$ srvctl add database -d gavin -o /opt/oracle/product10g/10.1.0.3$ srvctl add instance -d gavin -i gavin1 -n hqlinux05

$ srvctl add instance -d gavin -i gavin2 -n hqlinux06

$ srvctl status instance -d gavin -i gavin1

Instance gavin1 is running on node hqlinux05

$ srvctl status instance -d gavin -i gavin2Instance gavin2 is running on node hqlinux06


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Thanks for attending!!

Contact me:Email: [email protected]: + 971507843900

Q U E S T I O N SA N S W E R S

GAVIN SOORMATechnical Team Manager,DatabasesEmirates Airline, DubaiContact me at : 971507843900

[email protected]
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