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Oracle 11g RAC On Windows 2003 Using

VMware Server

This article describes the installation of Oracle 11g release 1 (11.1) RAC on Windows 2003

Server Standard Edition using VMware Server with no additional shared disk devices.

Introduction Download Software VMware Server Installation Virtual Machine Setup Guest Operating System Installation Oracle Installation Prerequisites Install VMware Client Tools Create Shared Disks Clone the Virtual Machine

Install the Clusterware Software Install the Database Software and Create an ASM Instance Create a Database using the DBCA TNS Configuration Check the Status of the RAC

Introduction
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One of the biggest obstacles preventing people from setting up test RAC environments is the

requirement for shared storage. In a production environment, shared storage is often provided bya SAN or high-end NAS device, but both of these options are very expensive when all you want

to do is get some experience installing and using RAC. A cheaper alternative is to use VMware

Server to fake the shared storage.

Using VMware Server you can run multiple Virtual Machines (VMs) on a single server,

allowing you to run both RAC nodes on a single machine. In additon, it allows you to set upshared virtual disks, overcoming the obstacle of expensive shared storage.

Before you launch into this installation, here are a few things to consider.

The finished system includes the host operating system, two guest operating systems, twosets of Oracle Clusterware, two ASM instances and two Database instances all on asingle server. As you can imagine, this requires a significant amount of disk space, CPU

and memory. To complete this installation I used a dual 3.0G Xeon server with 4G of

memory. This procedure provides a bare bones installation to get the RAC working. There is no

redundancy in the Clusterware installation or the ASM installation. To add this, simply

create double the amount of shared disks and select the "Normal" redundancy option

when it is offered. Of course, this will take more disk space.

During the virtual disk creation, I always choose not to preallocate the disk space. Thismakes virtual disk access slower during the installation, but saves on wasted disk space.

This is not, and should not be considered, a production-ready system. It's simply to allowyou to get used to installing and using RAC.

Download Software

Download the following software.

VMware Server Oracle 11g Release 1 (11.1) CRS and DB software

VMware Server Installation

For this article, I used CentOS 5 as the host operating systems. To use Windows as the host

operating system, simply run the executable installation file and ignore the following VMware

Server installation information.

First, install the VMware Server software. On Linux you do this with the following command asthe root user.

# rpm -Uvh VMware-server-*.rpmPreparing... ###########################################[100%]
http://www.vmware.com/download/server/http://www.vmware.com/download/server/http://www.oracle.com/technology/software/products/database/oracle11g/111060_linuxsoft.htmlhttp://www.oracle.com/technology/software/products/database/oracle11g/111060_linuxsoft.htmlhttp://www.oracle.com/technology/software/products/database/oracle11g/111060_linuxsoft.htmlhttp://www.vmware.com/download/server/

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1:VMware-server ###########################################[100%]#

Then finish the configuration by running the vmware-config.pl script as the root user. Most ofthe questions can be answered with the default response by pressing the return key. The output

below shows my responses to the questions.

# vmware-config.plMaking sure services for VMware Server are stopped.

Stopping VMware services:Virtual machine monitor [ OK ]

You must read and accept the End User License Agreement to continue.Press enter to display it.

VMWARE, INC.SOFTWARE BETA TEST AGREEMENT

*** Editied out license agreement ***

Do you accept? (yes/no) yes

Thank you.

Configuring fallback GTK+ 2.4 libraries.

In which directory do you want to install the mime type icons?[/usr/share/icons]

What directory contains your desktop menu entry files? These files have a

.desktop file extension. [/usr/share/applications]

In which directory do you want to install the application's icon?[/usr/share/pixmaps]

Trying to find a suitable vmmon module for your running kernel.

The module bld-2.6.9-5.EL-i686smp-RHEL4 loads perfectly in the runningkernel.

Do you want networking for your virtual machines? (yes/no/help) [yes]

Configuring a bridged network for vmnet0.

The following bridged networks have been defined:

. vmnet0 is bridged to eth0

All your ethernet interfaces are already bridged.

Do you want to be able to use NAT networking in your virtual machines?(yes/no)[yes]

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Configuring a NAT network for vmnet8.

Do you want this program to probe for an unused private subnet? (yes/no/help)[yes]

Probing for an unused private subnet (this can take some time)...

The subnet 172.16.210.0/255.255.255.0 appears to be unused.

The following NAT networks have been defined:

. vmnet8 is a NAT network on private subnet 172.16.210.0.

Do you wish to configure another NAT network? (yes/no) [no]

Do you want to be able to use host-only networking in your virtual machines?[yes] no

Trying to find a suitable vmnet module for your running kernel.

The module bld-2.6.9-5.EL-i686smp-RHEL4 loads perfectly in the runningkernel.

Please specify a port for remote console connections to use [902]

Stopping xinetd: [ OK ]Starting xinetd: [ OK ]Configuring the VMware VmPerl Scripting API.

Building the VMware VmPerl Scripting API.

Using compiler "/usr/bin/gcc". Use environment variable CC to override.

The installation of the VMware VmPerl Scripting API succeeded.

Do you want this program to set up permissions for your registered virtualmachines? This will be done by setting new permissions on all files found inthe "/etc/vmware/vm-list" file. [no] yes

Generating SSL Server Certificate

In which directory do you want to keep your virtual machine files?[/var/lib/vmware/Virtual Machines] /u01/VM

Do you want to enter a serial number now? (yes/no/help) [no] yes

Please enter your 20-character serial number.

Type XXXXX-XXXXX-XXXXX-XXXXX or 'Enter' to cancel: ENTER-YOUR-SERIAL-NUMBER

Starting VMware services:Virtual machine monitor [ OK ]Virtual ethernet [ OK ]Bridged networking on /dev/vmnet0 [ OK ]Host-only networking on /dev/vmnet8 (background) [ OK ]NAT service on /dev/vmnet8 [ OK ]Starting VMware virtual machines... [ OK ]

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The configuration of VMware Server e.x.p build-22874 for Linux for thisrunningkernel completed successfully.

#

The VMware Server Console is started by issuing the command "vmware" at the command

prompt, or by selecting it from the "System Tools" menu.

On the "Connect to Host" dialog, accept the "Local host" option by clicking the "Connect"button.

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You are then presented with the main VMware Server Console screen.

The VMware Server is now installed and ready to use.

Virtual Machine Setup

Now we must define the two virtual RAC nodes. We can save time by defining one VM, then

cloning it when it is installed. In this article I use Linux as my host operating system, so all the

file paths are UNIX style paths. If you are using a Windows host operating system you would

expect to use Windows style paths to the various VMware files, so adjust the paths as necessary.

Click the "Create a new virtual machine" button to start the "New Virtual Machine Wizard".

Click the "Next" button onthe welcome page.

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Select the "Custom" virtual machine configuration and click the "Next" button.

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Select the "Windows" guest operating system option, and set the version to "Windows Server

2003 Standard Edition", then click the "Next" button.

Enter the name "RAC1" and the location should default to "/u01/VM/RAC1", then click the

"Next" button.

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Select the required number of processors and click the "Next" button.

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Uncheck the "Make this virtual machine private" checkbox and click the "Next" button.

Select the amount of memory to associate with the virtual machine. Remember, you are going to

need two instances, so don't associate too much, but you are going to need approximately 1 Gig

(1024 Meg) to compete the installation successfully.

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Accept the "Use bridged networking" option by clicking the "Next" button.

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Accept the "LSI Logic" option by clicking the "Next" button.

Select the "Create a new virtual disk" option and click the "Next" button.

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Accept the "SCSI" option by clicking the "Next" button. It's a virtual disk, so you can still use

this option even if your physical disk is IDE or SATA.

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Set the disk size to "10.0" GB and uncheck the "Allocate all disk space now" option. The latter

will make disk access slower, but will save you wasting disk space.

Accept "RAC1.vmdk" as the disk file name and complete the VM creation by clicking the

"Finish" button.

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On the "VMware Server Console" screen, click the "Edit virtual machine settings" button.

On the "Virtual Machine Settings" screen, highlight the "Floppy 1" drive and click the "-

Remove" button.

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Click the "+ Add" button, select a hardware type of "Ethernet Adapter", then click the "Next"button.

Accept the "Bridged" option by clicking the "Finish" button.

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Finish by clicking the "OK" button on the Virtual Machine Settings dialog.

The virtual machine is now configured so we can start the guest operating system installation.

Guest Operating System Installation

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VMware sometimes creates additional network adapters, which will prevent the clusterware from

loading. Delete any additional adapters as follows. Open a command prompt on RAC1 and issuethe following commands.

set devmgr_show_nonpresent_devices=1devmgmt.msc

On the resulting "Device Manager" screen, pick the "View > Show hidden devices" menu option.

Now check for extra network adapters. You would expect two, but if there are more than this,

uninstall the greyed out adapters.

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Open the "Network Connections" screen (Start > All Programs > Accessories > Communications

> Network Connections). Rename the two connections to "public" and "private" respectively,

making sure you apply the names to the appropriate connections.

Check that the network settings are correct for both connections.

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The Clusterware installation is very sensitive, so make sure you read the Checking Network

Requirementssection of the documentation, and make any necessary changes.

In addition to the configuration mentioned above, the documentation suggests two more

configuration changes that I did not find necessary on VMware Server. Even so, it is advisable to

make the changes.

First, ensure the public interface is first in the bind order.

Open the "Network Connections" dialog by right-clicking on the "My Network Places"icon and selecting the "Properties" menu option.

Select the "Advanced > Advanced Settings..." menu option. On the "Adapters and Bindings" tab, make sure the public interface is the first interface

listed.

Accept any modifications by clicking on the "OK" button and exiting the "NetworkConnections" dialog.

Second, disable Windows Media Sensing for TCP/IP.

Backup the Windows registry. Run the Registry Editor (Regedt32.exe) and find the following key.

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters

Add the following registry value. Value Name: DisableDHCPMediaSense
http://download-east.oracle.com/docs/cd/B19306_01/install.102/b14207/prewin.htm#sthref208http://download-east.oracle.com/docs/cd/B19306_01/install.102/b14207/prewin.htm#sthref208http://download-east.oracle.com/docs/cd/B19306_01/install.102/b14207/prewin.htm#sthref208http://download-east.oracle.com/docs/cd/B19306_01/install.102/b14207/prewin.htm#sthref208http://download-east.oracle.com/docs/cd/B19306_01/install.102/b14207/prewin.htm#sthref208http://download-east.oracle.com/docs/cd/B19306_01/install.102/b14207/prewin.htm#sthref208

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Data Type: REG_DWORD -BooleanValue: 1

This change will not take effect until the computer is restarted.Next, install the VMware client tools.

Install VMware Client Tools

Login on the RAC1 virtual machine, then select the "VM > Install VMware Tools..." option from

the main VMware Server Console menu.

Click the "Install" button on the subsequent screen.

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Click the "Next" button to continue.

Accept the "Typical" option by clicking the "Next" button.

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Click the "Install" button to continue.

Set the hardware acceleration when prompted by clicking the "Yes" button and following the

instructions on the subsequent screens.

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Click the "Next" button on the welcome screen, then select the hardware type of "Hard Disk" andclick the "Next" button.

Accept the "Create a new virtual disk" option by clicking the "Next" button.

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Set the disk name to "/u01/VM/shared/ocr.vmdk" and click the "Advanced" button.

Set the virtual device node to "SCSI 1:1" and the mode to "Independent" and "Persistent", thenclick the "Finish" button.

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Repeat the previous hard disk creation steps 4 more times, using the following values.

File Name: /u01/VM/shared/votingdisk.vmdkVirtual Device Node: SCSI 1:2

Mode: Independent and Persistent

File Name: /u01/VM/shared/asm1.vmdkVirtual Device Node: SCSI 1:3Mode: Independent and Persistent

File Name: /u01/VM/shared/asm2.vmdkVirtual Device Node: SCSI 1:4

Mode: Independent and Persistent

File Name: /u01/VM/shared/asm3.vmdkVirtual Device Node: SCSI 1:5Mode: Independent and Persistent

At the end of this process, the virtual machine should look something like the picture below.

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scsi1:3.fileName = "/u01/VM/shared/asm1.vmdk"scsi1:3.deviceType = "plainDisk"scsi1:3.redo = ""

scsi1:4.present = "TRUE"scsi1:4.mode = "independent-persistent"scsi1:4.fileName = "/u01/VM/shared/asm2.vmdk"scsi1:4.deviceType = "plainDisk"scsi1:4.redo = ""

scsi1:5.present = "TRUE"scsi1:5.mode = "independent-persistent"scsi1:5.fileName = "/u01/VM/shared/asm3.vmdk"scsi1:5.deviceType = "plainDisk"scsi1:5.redo = ""

Start the RAC1 virtual machine by clicking the "Power on this virtual machine" button on the

VMware Server Console. When the server has started, log in so you can partition the disks.

Prior to partitioning the disks on Windows Server 2003, you must enable disk automounting. Ididn't need to do this, but I guess it makes sense to do as you're told. To enable automounting do

the following command at the command prompt, then restart the server.

C:\> diskpartDISKPART> automount enableDISKPART> exitC:\>

When the server restarts, open the "Computer Management" dialog (Start > All Programs >

Administrative Tools > Computer Management) and click on the Disk Management tree node.

This action should initiate the "Initialize and Convert Disk Wizard". Click the "Next" button to

continue.

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Initialize all 5 disks by clicking the "Next" button.

Don't convert any of the disks. Make sure all 5 disks are unchecked, then "Next" button.

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Select the "Extended partition" option, then click the "Next" button.

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The partition will now be displayed with a green bar. Right-click on the partition and select the

"New Logical Drive" option to restart the "New Partition Wizard".


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Accept the "Logical drive" option by clicking the "Next" button.

Accept the default partition size by clicking the "Next" button.

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Select the "Do not assign a drive letter or drive path" option, then click the "Next" button.

Select the "Do not format this partition" option, then click the "Next" button.

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Complete the logical drive by clicking the "Finish" button.

The drive should now be displayed as a healthy drive with a blue bar.

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Repeat the previous partitioning steps for the remaining 4 disks.

The shared disks are now configured.

Clone the Virtual MachineThe current version of VMware Server does not include an option to clone a virtual machine, but

the following steps illustrate how this can be achieved manually.

Shut down the RAC1 virtual machine and copy the RAC1 virtual machine using the following

command.

# cp -R /u01/VM/RAC1 /u01/VM/RAC2

Edit the contents of the "/u01/VM/RAC2/RAC1.vmx" file, making the following change.

displayName = "RAC2"

Ignore discrepancies with the file names in the "/u01/VM/RAC2" directory. This does not affect

the action of the virtual machine.

In the VMware Server Console, select the File > Open menu options and browse for the"/u01/VM/RAC2/RAC1.vmx" file. Once opened, the RAC2 virtual machine is visible on the

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console. Start the RAC2 virtual machine by clicking the "Power on this virtual machine" button

and click the "Create" button on the subsequent "Question" screen.

Open the "Network Connections" screen (Start > All Programs > Accessories > Communications

> Network Connections). Amend the IP Addresses of both connections to the correct values for

the RAC2 node.

The cloning process sometimes alters the network connection setup, so repeat the stepsmentioned previously for removing extra network adapters and renaming the connections.

Open the "System Properties" dialog (Start > Control Panel > System), click on the "ComputerName" tab and click the "Change" button. Enter the name "rac2" then click the "OK" button.

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Click all subsequent "OK" buttons to exit the "System Properties" dialog and restart the server

when prompted.

Once the RAC2 virtual machine has restarted, start the RAC1 virtual machine. When both nodeshave started, check they can both ping all the public and private IP addresses using the following

commands.

ping -c 3 rac1ping -c 3 rac1-privping -c 3 rac2ping -c 3 rac2-priv

At this point the virtual IP addresses defined in the hosts file will not work, so don't bother

testing them.

It's a good idea to take a snapshot of the virtual machines, so you can repeat the following stages

if you run into any problems. To do this, shutdown both virtual machines and issue the followingcommands.

# cd /u01/VM# tar -cvf RAC-PreClusterware.tar RAC1 RAC2 shared# gzip RAC-PreClusterware.tar

The virtual machine setup is now complete.

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Install the Clusterware Software

Start the RAC1 and RAC2 virtual machines. The Oracle Clusterware for Windows is verysensitive, so before you start, check the network connection setup on each machine again.

Remove and extra network adapters, rename the connections appropriately and check the nodes

ping correctly. Make sure your network configuration matches theChecking NetworkRequirementssection of the documentation.

Start the Oracle installer on RAC1.

On the "Welcome" screen, click the "Next" button.
http://download-east.oracle.com/docs/cd/B19306_01/install.102/b14207/prewin.htm#sthref208http://download-east.oracle.com/docs/cd/B19306_01/install.102/b14207/prewin.htm#sthref208http://download-east.oracle.com/docs/cd/B19306_01/install.102/b14207/prewin.htm#sthref208http://download-east.oracle.com/docs/cd/B19306_01/install.102/b14207/prewin.htm#sthref208http://download-east.oracle.com/docs/cd/B19306_01/install.102/b14207/prewin.htm#sthref208http://download-east.oracle.com/docs/cd/B19306_01/install.102/b14207/prewin.htm#sthref208

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The "Specify Cluster Configuration" screen shows only the RAC1 node in the cluster. Click the"Add" button to continue.

Enter the details for the RAC2 node and click the "OK" button.

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The "Specific Network Interface Usage" screen defines how each network interface will be used.

Highlight the "public" interface and click the "Edit" button.

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Set the "public" interface type to "Public" and click the "OK" button.

Leave the "private" interface as private and click the "Next" button.

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On the "Cluster Configuration Storage" screen, highlight disk 1 and click the "Edit" button.

Select the "Place OCR(Primary) on this Partition" option and click the "OK" button.

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Highlight disk 2 and click the "Edit" button. Select the "Place Voting Disk on this Partition"

option and click the "OK" button.

On the "Cluster Configuration Storage" screen, click the "Next" button and ignore the

redundancy warnings by clicking the "OK" button.

On the "Summary" screen, click the "Install" button to continue.

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Wait while the installation takes place.

Wait while the configuration assistants run.

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Click the "Exit" button to leave the installer.

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# cd /u01/VM# tar -cvf RAC-PostClusterware.tar RAC1 RAC2 shared

# gzip RAC-PostClusterware.tar

The clusterware installation is now complete.

Install the Database Software and Create an ASM Instance

Start the RAC1 and RAC2 virtual machines, login to RAC1 and start the Oracle installer.

On the "Welcome" screen, click the "Next" button.

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Select the "Enterprise Edition" option and click the "Next" button.

Enter the path for the Oracle Base along with the name and path for the Oracle Home and click

the "Next" button.

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Select the "Cluster Installation" option and make sure both RAC nodes are selected, then clickthe "Next" button.

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Wait while the prerequisite checks are done. If you have any failures correct them and retry the

tests before clicking the "Next" button.

Select the "Configure Automatic Storage Management (ASM)" option, enter the SYS password

for the ASM instance, then click the "Next" button.

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Select the "External" redundancy option (no mirroring) and click the "Stamp Disks..." button.

Select the "Add or change label" option and click the "Next" button.

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Highlight disks 3-5 and click the "Next" button. Remember, disk0 is the OS, disk1 is the OCR

location and disk2 is the voting disk.

Confirm your selection by clicking the "Next" button.

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Complete the disk stamp by clicking the "Finish" button.

Select the candidate disks and click the "Next" button.

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Click the "Next" button to avoid the Oracle Configuration Manager registration.

On the "Summary" screen, click the "Install" button to continue.

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Wait while the database software installs.

Once the installation is complete, wait while the configuration assistants run.

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# cd /u01/VM# tar -cvf RAC-PostASM.tar RAC1 RAC2 shared

# gzip RAC-PostASM.tar

The database software installation and ASM creation step is now complete.

Create a Database using the DBCA

Start the RAC1 and RAC2 virtual machines, login to RAC1 start the Database Configuration

Assistant (Start > All Programs > Oracle - OraDb11g_home1 > Configuration and Migration

Tools > Database Configuration Assistant).

On the "Welcome" screen, select the "Oracle Real Application Clusters database" option andclick the "Next" button.

Select the "Create a Database" option and click the "Next" button.

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Highlight both RAC nodes and click the "Next" button.

Select the "Custom Database" option and click the "Next" button.

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Enter the values "RAC.WORLD" and "RAC" for the Global Database Name and SID Prefix

respectively, then click the "Next" button.

Accept the management options by clicking the "Next" button. If you are attempting the

installation on a server with limited memory, you may prefer not to configure EnterpriseManager at this time.

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Enter database passwords then click the "Next" button.

Select the "Automatic Storage Management (ASM)" option, then click the "Next" button.

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Check both the "Specify Flash Recovery Area" and "Enable Archiving" options. Enter "+DATA"

as the Flash Recovery Area, then click the "Next" button.

Uncheck all but the "Enterprise Manager Repository" option, then click the "Standard Database

Components..." button.

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Uncheck all but the "Oracle JVM" and "Oracle XML DB" options, then click the "OK" button,

followed by the "Next" button on the previous screen. If you are attempting the installation on a

server with limited memory, you may prefer not to install these at this time.

Accept the "Typical" memory management option by clicking the "Next" button.

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Accept the enhanced security settings by clicking the "Next" button.

Accept the enabled automatic maintenance tasks by clicking the "Next" button.

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Accept the database storage settings by clicking the "Next" button.

Accept the database creation options by clicking the "Finish" button.

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Accept the summary information by clicking the "OK" button.

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Wait while the database is created.

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Once the database creation is complete you are presented with the following screen. Make a note

of the information on the screen and click the "Exit" button.

The RAC database creation is now complete.

TNS Configuration

Once the installation is complete, the "%ORACLE_HOME%\network\admin\listener.ora" file on

each RAC node will contain entries similar to the following.

LISTENER_RAC1 =

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(DESCRIPTION_LIST =(DESCRIPTION =

(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))(ADDRESS = (PROTOCOL = TCP)(HOST = rac1-vip)(PORT = 1521)(IP = FIRST))(ADDRESS = (PROTOCOL = TCP)(HOST = 10.1.10.191)(PORT = 1521)(IP =

FIRST)))

)

The "%ORACLE_HOME%\network\admin\tnsnames.ora" file on each RAC node will contain

entries similar to the following.

RAC =(DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST = rac1-vip)(PORT = 1521))(ADDRESS = (PROTOCOL = TCP)(HOST = rac2-vip)(PORT = 1521))(LOAD_BALANCE = yes)(CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = RAC.WORLD))

)

LISTENERS_RAC =(ADDRESS_LIST =(ADDRESS = (PROTOCOL = TCP)(HOST = rac1-vip)(PORT = 1521))(ADDRESS = (PROTOCOL = TCP)(HOST = rac2-vip)(PORT = 1521))

)

RAC2 =(DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST = rac2-vip)(PORT = 1521))(CONNECT_DATA =

(SERVER = DEDICATED)(SERVICE_NAME = RAC.WORLD)(INSTANCE_NAME = RAC2)

))

RAC1 =(DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST = rac1-vip)(PORT = 1521))(CONNECT_DATA =

(SERVER = DEDICATED)(SERVICE_NAME = RAC.WORLD)(INSTANCE_NAME = RAC1)

))

This configuration allows direct connections to specific instance, or using a load balanced

connection to the main service.

C:\>sqlplus / as sysdba

SQL*Plus: Release 11.1.0.6.0 - Production on Wed Oct 24 18:53:22 2007

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Copyright (c) 1982, 2007, Oracle. All rights reserved.

Connected to:Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - ProductionWith the Partitioning, Real Application Clusters, OLAP, Data Miningand Real Application Testing options

SQL> CONN sys/password@rac1 AS SYSDBAConnected.SQL> SELECT instance_name, host_name FROM v$instance;

INSTANCE_NAME HOST_NAME---------------- ----------------------------------------------------------------rac1 RAC1

SQL> CONN sys/password@rac2 AS SYSDBAConnected.

SQL> SELECT instance_name, host_name FROM v$instance;


SQL> CONN sys/password@rac AS SYSDBAConnected.SQL> SELECT instance_name, host_name FROM v$instance;


SQL>

Check the Status of the RAC

There are several ways to check the status of the RAC. The srvctl utility shows the currentconfiguration and status of the RAC database.

C:\>srvctl config database -d RACrac1 RAC1 C:\oracle\product\11.1.0\db_1

rac2 RAC2 C:\oracle\product\11.1.0\db_1

C:\>

C:\>srvctl status database -d RACInstance RAC1 is running on node rac1Instance RAC2 is running on node rac2

C:\>

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The V$ACTIVE_INSTANCES view can also display the current status of the instances.

C:\>sqlplus / as sysdba

SQL*Plus: Release 11.1.0.6.0 - Production on Wed Oct 24 18:53:22 2007

Copyright (c) 1982, 2007, Oracle. All rights reserved.

Connected to:Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - ProductionWith the Partitioning, Real Application Clusters, OLAP, Data Miningand Real Application Testing options

SQL> SELECT * FROM v$active_instances;

INST_NUMBER INST_NAME----------- ------------------------------------------------------------

1 RAC1:rac12 RAC2:rac2

SQL>

Finally, the GV$ allow you to display global information for the whole RAC.

SQL> SELECT inst_id, program, sid, serial# FROM gv$session;

INST_ID PROGRAM SID SERIAL#---------- ------------------------------- ---------- ----------

1 ORACLE.EXE (q001) 110 1..

1 racgimon.exe 170 142 ORACLE.EXE (PZ99) 111 87..

2 racgimon.exe 170 11

83 rows selected.

SQL>

If you have configured Enterprise Manager, it can be used to view the configuration and current

status of the database using a URL like "https://rac1.localdomain:1158/em".

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11g RAC on win 2003