Oracle 10g rac with redhat as4 u1.NFS Server on vmware5.5 install succeed!

test environment:
Vmware Workstation 5.5
RHEL4U1 For x86
Oracle 10g (10.1.0.2) For linux
Virtual machine 1: NFS Server
Virtual machine 2:RAC node 1
Virtual machine 3:RAC node 2

Pl post in the RAC install forum - RAC, ASM & Clusterware Installation
HTH
Srini

Similar Messages

Does managing Oracle 10g RAC with ASM require full root access?

We currently have three entirely separate support areas, Unix, Storage and DBA. We're now considering using Oracle 10g RAC with ASM and as part of the assessment trying to work out if we can still draw similar support boundaries. I know that installing RAC and configuring ASM requires root access but will DBA continue to need root access to manage & support RAC? If so, does anyone know if the commands they need can be RBAC'd or if we just need to share root access going forwards. I've had a look at a number of docs including http://download.oracle.com/docs/cd/B19306_01/rac.102/b14197/toc.htm. which is fairly informative but none of them seem to mention the requirement for root access on Solaris. I'm guessing they just assume that it's available, but that's not generally the case in our environment.
All advice / info welcome!

I would have thought that the only reason you would need root access once RAC and ASM had been set up would be to add more disks to the ASM configuration. This would be needed to change the ownership on the raw LUNs or to make additions to metasets (SVM/Oban) or diskgroups (VxVM/CVM). Beyond that, I can't imagine needing root access.
I'm sure others will chime in if they can think of other reasons!
Regards,
Tim
Edited by: Tim.Read on Jun 3, 2008 2:25 AM

Failure at final check of Oracle CRS stack.AIX oracle 10g RAC with GPFS

HI ，I install oracle 10R2 RAC using GPFS，os is AIX 6.1,but when I installed CRS，at executing the second root.sh ,I am in trouble ，the error information as follow :
Failure at final check of Oracle CRS stack.
10
I look up the log file the information :
The OCR location /data_gpfs/CRS/ocr_disk2 is inaccessible. Details in /orac
leapp/product/10.2.0/crs/log/p615a/client/ocrconfig_6881286.log.
the ocrconfig_6881286.log.information:
2014-01-24 01:32:20.361: [ OCRCONF][1]ocrconfig starts...
2014-01-24 01:32:20.389: [ OCRCONF][1]Upgrading OCR data
2014-01-24 01:32:20.391: [ OCROSD][1]utread:3: problem reading buffer 100f21d0 buflen 512 retval 0 phy_offset 102400 retry 0
2014-01-24 01:32:20.391: [ OCROSD][1]utread:4: problem reading the buffer errno 2 errstring No such file or directory
2014-01-24 01:32:20.391: [ OCROSD][1]utread:3: problem reading buffer 100f21d0 buflen 512 retval 0 phy_offset 102400 retry 0
2014-01-24 01:32:20.391: [ OCROSD][1]utread:4: problem reading the buffer errno 2 errstring No such file or directory
2014-01-24 01:32:20.391: [ OCROSD][1]utread:3: problem reading buffer ffffb1d0 buflen 4096 retval 0 phy_offset 102400 retry 0
2014-01-24 01:32:20.392: [ OCROSD][1]utread:4: problem reading the buffer errno 2 errstring No such file or directory
2014-01-24 01:32:20.392: [ OCRRAW][1]propriogid:1: INVALID FORMAT
2014-01-24 01:32:20.392: [ OCROSD][1]utread:3: problem reading buffer ffffb1d0 buflen 4096 retval 0 phy_offset 102400 retry 0
2014-01-24 01:32:20.392: [ OCROSD][1]utread:4: problem reading the buffer errno 2 errstring No such file or directory
2014-01-24 01:32:20.392: [ OCRRAW][1]propriogid:1: INVALID FORMAT
2014-01-24 01:32:20.392: [ OCRRAW][1]proprioini: both disks are not OCR formatted
2014-01-24 01:32:20.392: [ OCRRAW][1]proprinit: Could not open raw device
2014-01-24 01:32:20.392: [ default][1]a_init:7!: Backend init unsuccessful : [26]
2014-01-24 01:32:20.393: [ OCRCONF][1]Exporting OCR data to [OCRUPGRADEFILE]
2014-01-24 01:32:20.393: [ OCRAPI][1]a_init:7!: Backend init unsuccessful : [33]
propriogid:1: INVALID FORMAT
2014-01-24 01:32:20.516: [ OCRRAW][1]propriowv: Vote information on disk 0 [/data_gpfs/CRS/ocr_disk1] is adjusted from [0/0] to [1/2]
2014-01-24 01:32:20.527: [ OCRRAW][1]propriowv: Vote information on disk 1 [/data_gpfs/CRS/ocr_disk2] is adjusted from [0/0] to [1/2]
2014-01-24 01:32:20.960: [ OCRRAW][1]propriniconfig:No 92 configuration
2014-01-24 01:32:20.960: [ OCRAPI][1]a_init:6a: Backend init successful
2014-01-24 01:32:21.191: [ OCRCONF][1]Initialized DATABASE keys in OCR
2014-01-24 01:32:21.349: [ OCRCONF][1]Successfully set skgfr block 0
2014-01-24 01:32:21.351: [ OCRCONF][1]Exiting [status=success]...
I dont know what cause this error,i am really trouble,who can help me !!!

HI ，I install oracle 10R2 RAC using GPFS，os is AIX 6.1,but when I installed CRS，at executing the second root.sh ,I am in trouble ，the error information as follow :
Failure at final check of Oracle CRS stack.
10
I look up the log file the information :
The OCR location /data_gpfs/CRS/ocr_disk2 is inaccessible. Details in /orac
leapp/product/10.2.0/crs/log/p615a/client/ocrconfig_6881286.log.
the ocrconfig_6881286.log.information:
2014-01-24 01:32:20.361: [ OCRCONF][1]ocrconfig starts...
2014-01-24 01:32:20.389: [ OCRCONF][1]Upgrading OCR data
2014-01-24 01:32:20.391: [ OCROSD][1]utread:3: problem reading buffer 100f21d0 buflen 512 retval 0 phy_offset 102400 retry 0
2014-01-24 01:32:20.391: [ OCROSD][1]utread:4: problem reading the buffer errno 2 errstring No such file or directory
2014-01-24 01:32:20.391: [ OCROSD][1]utread:3: problem reading buffer 100f21d0 buflen 512 retval 0 phy_offset 102400 retry 0
2014-01-24 01:32:20.391: [ OCROSD][1]utread:4: problem reading the buffer errno 2 errstring No such file or directory
2014-01-24 01:32:20.391: [ OCROSD][1]utread:3: problem reading buffer ffffb1d0 buflen 4096 retval 0 phy_offset 102400 retry 0
2014-01-24 01:32:20.392: [ OCROSD][1]utread:4: problem reading the buffer errno 2 errstring No such file or directory
2014-01-24 01:32:20.392: [ OCRRAW][1]propriogid:1: INVALID FORMAT
2014-01-24 01:32:20.392: [ OCROSD][1]utread:3: problem reading buffer ffffb1d0 buflen 4096 retval 0 phy_offset 102400 retry 0
2014-01-24 01:32:20.392: [ OCROSD][1]utread:4: problem reading the buffer errno 2 errstring No such file or directory
2014-01-24 01:32:20.392: [ OCRRAW][1]propriogid:1: INVALID FORMAT
2014-01-24 01:32:20.392: [ OCRRAW][1]proprioini: both disks are not OCR formatted
2014-01-24 01:32:20.392: [ OCRRAW][1]proprinit: Could not open raw device
2014-01-24 01:32:20.392: [ default][1]a_init:7!: Backend init unsuccessful : [26]
2014-01-24 01:32:20.393: [ OCRCONF][1]Exporting OCR data to [OCRUPGRADEFILE]
2014-01-24 01:32:20.393: [ OCRAPI][1]a_init:7!: Backend init unsuccessful : [33]
propriogid:1: INVALID FORMAT
2014-01-24 01:32:20.516: [ OCRRAW][1]propriowv: Vote information on disk 0 [/data_gpfs/CRS/ocr_disk1] is adjusted from [0/0] to [1/2]
2014-01-24 01:32:20.527: [ OCRRAW][1]propriowv: Vote information on disk 1 [/data_gpfs/CRS/ocr_disk2] is adjusted from [0/0] to [1/2]
2014-01-24 01:32:20.960: [ OCRRAW][1]propriniconfig:No 92 configuration
2014-01-24 01:32:20.960: [ OCRAPI][1]a_init:6a: Backend init successful
2014-01-24 01:32:21.191: [ OCRCONF][1]Initialized DATABASE keys in OCR
2014-01-24 01:32:21.349: [ OCRCONF][1]Successfully set skgfr block 0
2014-01-24 01:32:21.351: [ OCRCONF][1]Exiting [status=success]...
I dont know what cause this error,i am really trouble,who can help me !!!

Crs installation problem in oracle 10g rac with NAS storage

Hi,
for my practice i am trying to install oracle 10gR2 on RHEL5-64bit OS in my laptop.
during my crs installation i have struckup with the below error while i am executing root.sh in node1.
Error:
+++++
Setting the permissions on OCR backup directory
Setting up NS directories
PROT-1: Failed to initialize ocrconfig
Failed to upgrade Oracle Cluster Registry configuration
ocrconfig.log ;
++++++++++++
NFS file system /u01 mounted with incorrect options
[ OCROSD][4265610768]WARNING:Expected NFS mount options: wsize>=32768,rsize>=32768,hard,(noac | actimeo=0 | acregmin=0,acregmax=0,acdirmin=0,acdirmax=0
[ OCROSD][4265610768]utopen:6m'': OCR location [share/storage/ocr] configured is not a valid storage type. Rturn code [37].
As per metalink i have find that this problem is fixed with Patch:4679769
# Patch Installation Instructions:
# To apply the patch, unzip the PSE container file:
# p4679769_10201_LINUX.zip
# Set your current directory to the directory where the patch
# is located:
# % cd 4679769
# Copy the clsfmt.bin binary to the $ORACLE_HOME/bin directory where
# clsfmt is being run:
# % cp $ORACLE_HOME/bin/clsfmt.bin $ORACLE_HOME/bin/clsfmt.bin.bak
# % cp clsfmt.bin $ORACLE_HOME/bin/clsfmt.bin
# Ensure permissions on the clsfmt.bin binary are correct:
# % chmod 755 $ORACLE_HOME/bin/clsfmt.bin
3. Run the root.sh script and proceed with the installation.
**My question is still i am not install Database ..only i ma trying to install crs but in this readme .txt we need to replace the clsfmt.bin file in ORACLE_HOME/bin.**
**but i have not bin directory under in ORACLE_HOME.please clear my doupt to apply this patch...**
Regards,
Mugunth

Also you clusterware installation installs to an ORACLE_HOME.
Oracle does only make a differentiation, if it has to be clear, that you got a clusterware home and a database home.
Normally if a patch is referring to $ORACLE_HOME (and the patch can be used for clusterware & database), it just means the installation directory of the oracle software installed.
Sebastian

Oracle 10g RAC with ASM upgrade RHEL3 to RHEL4

Has anyone acheived this or know of any documentation highlighting any pitfalls ?

Hi.
If you are using raw devices for ASM, I would not expect there to be a problem. I would have thought all you have to do is:
- Stop Oracle from starting automatically on reboot.
- Reboot the server and upgrade the OS.
- Make sure all the prerequisites for the new OS are meet (check the isntall guide).
- Startup Oracle.
Note. It may be wise to do a "$ORACLE_HOME/bin/relink all" to make sure.
If you are using ASMLib with ASM, then you will also need to upgrade your ASMLib software, as this is kernel version specific.
Of course, I've never had to do this, so don't take my word for it :) Maybe an SR on Metalink is in order.
Cheers
Tim...

AIX OS patch intsalltion on Oracle 10G RAC

My AIX admin is going to install AIX OS ptach on oracle 10g RAC ( with ASM) ( for AIX bug fixiting)
It is two node cluster.
I would like to know what are the steps DBA to consider before applying the OS patch
Please post any link or dcoument
In single database instance , I know the steps
1. backup the database
2. shutdowm database and listener
3. shutdown ASM
apply oS patch
after OS patch
start ASM
start database and listener
Edited by: user8680248 on 5/09/2010 19:06

Perhaps this link could be interesting:
http://download.oracle.com/docs/cd/B19306_01/em.102/b16227/toc.htm
In particular:
http://download.oracle.com/docs/cd/B19306_01/em.102/b16227/oui8_opatch.htm#CEGHIJGI

Oracle 10g RAC installation on linux server.

HI,
Can anybody help me that to give some answers of my question's ?
can i install oracle 10g RAC on a single hdd linux server which is installed on an ordinary intel processor based machine.
if i can then plz tell me this how can i do this.
i am new in linux server just wanted to learn that how to install oracle 10g RAC.
thanks & Regards to all of my seniors..

The only option you have to install RAC on 1 machine is to use Oracle VM, VMWare or Linux Virtualization feature (Linux Xen).

Using Clob with TopLink 9.0.4.5 and Oracle 10g RAC

I am trying to store an XML file in a Clob type field of a DB table using TopLink 9.0.4.5 and Oracle 10g RAC and need some guidance about how to do it. I got some directions to start it with the Tip "How-To: Map Large Objects (LOBs) to Oracle Databases with OracleAS TopLink" but still need some more helps.
When using the Oracle JDBC OCI driver, the tip gives the code block for a Clob field:
DirectToField scriptMapping = new DirectToField();
scriptMapping.setAttributeName("script");
scriptMapping.setFieldName("IMAGE.SCRIPT");
descriptor.addMapping(scriptMapping);
As I understand, TopLink creates instances of the Descriptor class at run time for each of the descriptor files and stores them in a database session, where is the proper place (in SessionEvent of TopLinkSessionEventHandler?) for me to get a reference to such an instance of my Descriptor class in Java code so that I can add the above mentioned additional Mapping? Are the above String values of "script" and "IMAGE.SCRIPT" predefined in TopLink API? Can I accomplish the same thing just using the TopLink Workbench tool instead? If yes, please advise the detailed steps to do so.
The tip also states to call the following code in case of using Clob:
DatabaseLogin login = session.getLogin();
login.useStringBinding();
Should the above 2 lines of code be called after the following lines of code?
SessionManager sessionManager = SessionManager.getManager();
Server serverSession = (Server)sessionManager.getSession("MY_SESSION_NAME");
Besides the above extra coding for the Session and Descriptor Mapping, is there any special handling in between Data model and DB table mapping? Can I map a Java String type to a DB Clob field using the Direct-to-field mapping?
Appreciate any help.

Never mind ....... I had already figured it out .....

Problem with Oracle 10g RAC VIP network setting at Solaris 9

Dear All,
I have tried to set up a Oracle 10g RAC Release 2.
With OS solaris 9, and 2 nodes.
The nodes setting as the following:
nodes 1:
Public address: 172.16.0.121
Private address: 192.168.0.121, 192.168.1.121 (dual path for heart beat)
nodes 2:
Public address: 172.16.0.122
Private address: 192.168.0.122, 192.168.1.122
And i have assigned two IP adress 172.16.0.131, 172.16.0.132 as the VIP address for the
RAC.
And the following is the /etc/hosts file:
root@shk01 # cat /etc/hosts
# Internet host table
127.0.0.1 localhost
# public address
172.16.0.121 shk01 loghost
172.16.0.122 shk02
# heart beat
192.168.0.121 shk01-priv1
192.168.1.121 shk01-priv2
192.168.0.122 shk02-priv1
192.168.1.122 shk02-priv2
# VIP address
172.16.1.131 vip-shk01
172.16.1.132 vip-shk02
But when i run the command "$ ./runcluvfy.sh comp nodecon -n shk01,shk02 -verbose"
it shows the error:
ERROR:
Could not find a suitable set of interfaces for VIPs.
Result: Node connectivity check failed.
I did try to add the VIP address on bge0:1, as i using bge0 for the public address.
Both nodes i did using the same interface name for it.
Anyone have idea for me to check out the error?
Also, I have other question about the raw device.
As there is option for setting for ASM or raw device. If choosing raw device, does it mean that it just need to
format the storage disk but without newfs it? And then the Oracle program will able to handle it?
Thanks,
Xentar

You don't seem to state categorically that you are using Solaris Cluster, so I'll assume it since this is mainly a forum about Solaris Cluster (and IMHO, Solaris Cluster with Clusterware is better than Clusterware on its own).
Clusterware has to see the same device names from all cluster nodes. This is why Solaris Cluster (SC) is a positive benefit over Clusterware because SC provides an automatically managed, consistent name space. Clusterware on its own forces you to manage either the symbolic links (or worse mknods) to create a consistent namespace!
So, given the SC consistent namespace you simple add the raw devices into the ASM configuration, i.e. /dev/did/rdsk/dXsY. If you are using Solaris Volume Manager, you would use /dev/md/<setname>/rdsk/dXXX and if you were using CVM/VxVM you would use /dev/vx/rdsk/<dg_name>/<dev_name>.
Of course, if you genuinely are using Clusterware on its own, then you have somewhat of a management issue! ... time to think about installing SC?
Tim
---

Solaris 10 and Hitachi LUN mapping with Oracle 10g RAC and ASM?

Hi all,
I am working on an Oracle 10g RAC and ASM installation with Sun E6900 servers attached to a Hitachi SAN for shared storage with Sun Solaris 10 as the server OS. We are using Oracle 10g Release 2 (10.2.0.3) RAC clusterware
for the clustering software and raw devices for shared storage and Veritas VxFs 4.1 filesystem.
My question is this:
How do I map the raw devices and LUNs on the Hitachi SAN to Solaris 10 OS and Oracle 10g RAC ASM?
I am aware that with an Oracle 10g RAC and ASM instance, one needs to configure the ASM instance initialization parameter file to set the asm_diskstring setting to recognize the LUNs that are presented to the host.
I know that Sun Solaris 10 uses /dev/rdsk/CwTxDySz naming convention at the OS level for disks. However, how would I map this to Oracle 10g ASM settings?
I cannot find this critical piece of information ANYWHERE!!!!
Thanks for your help!

You don't seem to state categorically that you are using Solaris Cluster, so I'll assume it since this is mainly a forum about Solaris Cluster (and IMHO, Solaris Cluster with Clusterware is better than Clusterware on its own).
Clusterware has to see the same device names from all cluster nodes. This is why Solaris Cluster (SC) is a positive benefit over Clusterware because SC provides an automatically managed, consistent name space. Clusterware on its own forces you to manage either the symbolic links (or worse mknods) to create a consistent namespace!
So, given the SC consistent namespace you simple add the raw devices into the ASM configuration, i.e. /dev/did/rdsk/dXsY. If you are using Solaris Volume Manager, you would use /dev/md/<setname>/rdsk/dXXX and if you were using CVM/VxVM you would use /dev/vx/rdsk/<dg_name>/<dev_name>.
Of course, if you genuinely are using Clusterware on its own, then you have somewhat of a management issue! ... time to think about installing SC?
Tim
---

Help! to set up Oracle 9i RAC on Redhat Linux 8.0

hello,
we are setting up Oracle 9i RAC on Redhat Linux 8.0.
The problem we are having is at the point of sharing the raw partition and mounting the raw partition via nfs.
so we have two dell systems called linuxa and linuxb.
the partitions are made on linuxa (/dev/hda6...) and the raw command is used to bind the raw partition to the device (raw /dev/raw/raw1 /dev/hda6)
now when i run the command to mount
(mount -tnfs linuxa:/dev/raw/raw1 /mnt) i am getting an error
i know this problem isn't directly related with oracle but the whole point in doing this is to install oracle 9i on a shared device between the two system.
i have looked online everywhere for documentation and haven't come up with anything.
Any help will be greatly appreciated!
sara

I don't know that you can use nfs to share a raw partition. This also defeats the idea of the cluster - If a host dies, the disk storage must still be viewable from the other node.
The raw device must be viewable to both hosts. Oracle controls which host is writing to the disk at any instant.
Use the firewire method or use two scsi cards (terminated, with different scsi id's) to a SHARED scsi disk (unterminated).
This works, I have it running here on 2 PC's with Redhat 7.3. The SCSI disk sits in its own external box between the two PC's. NFS is not used at any stage.

Oracle 10g rac ora-01092 oracle instance terminated disconnection forced

hi
I am getting following error on 2 node RAC (on NFS mount point )
oracle 10g rac ora-01092 oracle instance terminated disconnection forced
br
anuj singh

Anju,
Its really very difficult to tell you what exactly went wrong with the limited information given by you. Did you check the alert log and other cluster (crsd and cssd ) logs? If not, I would strongly recommend you to pay attention to these logs for any clue.
Jaffar

Oracle 10g RAC installation on HP-UX 11.31 for SAP ERP 6.04

Dear experts,
We are trying to install SAP ERP 6.0 EHP4 with Oracle 10g RAC on HP-UX 11.31. Please note that, We are using VERITAS cluster filesystem (CFS) for this purpose and not HP-UX ServiceGuard ClusterFileSystem.
*As per SAP procedure, we have installaed plain plain SAP system with single instance Oracle (ref: Configuration of SAP NetWeaver for Oracle Database 10gRAC guide). Now we are first trying to install Oracle Clusterware (CRS) and then we will install Oracle RAC software. Is this procedure right?*
Which file (and its path) we have to use for CRS installation and its patch? Is it runInstaller under /oracle/stage/102_64/clusterware? With this file we can install CRS 10.2.0.1. Similarly for Oracle RAC, which files we are supposed to use, i.e for installation and patch upgrade?
Also can we use clusterware package available from Oracle directly in the SAP environment?
We tried to install CRS with runInstaller while running Configuration Assistant after root.sh script.
The following commands are failing in Configuration Assistant:
/oracle/CRS/102_64/bin/racgons add_config erpprdd1:4948 erpprdd2:4948
/oracle/CRS/102_64/bin/oifcfg setif -global lan1/20.20.20.0:cluster_interconnect lan0/192.168.3.0:public
/oracle/CRS/102_64/bin/cluvfy stage -post crsinst -n erpprdd1,erpprdd2
1st command does not give any output if run manually.
2nd commands o/p: PRIF-12: failed to initialize cluster support services
3rd commands fails in every check
Please suggest the solution and expecting answers to the above mentioned questions.
Thanks & Regards,
Tejas

>
Charles Yu wrote:
> Q1: Oracle RAC with 9.2.x on HP-UX?
> A: For HA environment, cluster software is: MC/SG on HP-UX 11.31; there are optional components of MC/SG for supporting Oracle RAC and SAP application. I was confused that I could not find the installation guide regarding 4.6C on MC/SG HA environment of HP-UX.
> Charles
Relevant docs for Service Guard (SG) cluster are available at http://docs.hp.com. Hope you have checked for the suport of oracle 92x on HP-UX 11.31
>
Charles Yu wrote:
> Q2: Any reason why you don't use a supported database version?
> A: Actually, in order to avoiding the the risk of database upgrade and minimizing the migration risk, top level has decided that keeping the same Oracle version. Indeed, we don't plan the migration of application. On the other hand, it is complicated to do the assessment for application migration.
> Charles
You can go for combined os migration and db release upgrade also at a stretch with the same downtime.

Oracle 10g rac installation on IBM power server

Dear Gurus,
I am installing Oracle 10g RAC on IBM power server but while running CRS getting the following errors. Please help to resolve this issue.
OUTPUT from Installation log:
INFO: Start output from spawned process:
INFO: INFO:
INFO: /oracle/app/oracle/product/crs/bin/genclntsh
INFO: /usr/bin/ld: cannot find -lxl
INFO: collect2: ld returned 1 exit status
INFO: genclntsh: Failed to link libclntsh.so.10.1
INFO: make:
INFO: *** [client_sharedlib] Error 1
INFO: End output from spawned process.
INFO: INFO: Exception thrown from action: make
Exception Name: MakefileException
Exception String: Error in invoking target 'client_sharedlib' of makefile '/oracle/app/oracle/product/crs/network/lib/ins_net_client.mk'. See '/oracle/app/oracle/oraInventory/logs/installActions2011-12-26_04-40-48PM.log' for details.
Exception Severity: 1
INFO: Exception handling set to prompt user with options to Retry Ignore
SYSTEM:
IBM power server
Linux 5.3
I have already tried changing ORACLE_HOME,CRS_HOME,LD_LIBRARY_PATH but nothing worked.
Regards,
Prajash

Those errors remind me on errors I encountered when I was trying to do installation that was not certified,
so try to check if installation you are doing is actually supported.
In the meantime , visit metalink and read document [ID 460969.1] , */usr/bin/ld: Cannot Find -lxml10, Genclntsh: Failed To Link Libclntsh.so.10.1*

Oracle 10g RAC

Hi All,
I am a research student currently struggling to install Oracle 10g RAC on Windows OS.What i understand about a Oracle RAC database system is that it involves a configuration of multiple hosts or servers joined together with a clustering software and accessing the shared disk structures.What i also understand is that i need a CRS provided by Oracle for a Windows or Linux based RAC installation.
What i don't understand is for a Two node RAC system do i need a Third machine which has the shared storage device.If yes do i have to install a copy of Oracle 10g Enterprise Edition and CRS on the shared storage device moreover do i need to install a copy of Oracle 10g Enterprise edition on each of the nodes or just the clusterware is enough.

Hi Salil
No, you do not need a third machine. You can even setup RAC as a single node on one machine! What you do need is to have some sort of cluster aware file system. Try looking at OCFS on Windows in your case.
If you are interested in a Linux example please have a look at the examples at http://ocpdba.net/oracle9i_rac/cheaprac.html and http://ocpdba.net/oracle10g_rac for an OCFS implementation I am working on.
regards,
Ahbaid

Oracle 10g rac with redhat as4 u1.NFS Server on vmware5.5 install succeed!

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