Oracle 11gR2 (2 node) RAC Architecture requirements for ASM implementation

My architect is the following:
* RAC1 server of Red Hat Linux Enterprise 5.5 64bit
* RAC2 server of Red Hat Linux Enterprise 5.5 64bit
* NFS Server (SAN) with Red Hat Linux Enterprise 5.5 64bit
- Exported files systems for Shared Data, OCR and Voting Disks to nodes RAC1 and RAC2
I've installed the ASM packages on to my NFS Server (SAN) and then realized that I still need a way to share the storage. It is my understanding that Oracle ASM for Red Hat Linux Enterprise 5.5 64bit DOES NOT PROVIDE Shared Storage to the other nodes (RAC1 and RAC2). It seems that I need something else???
I've implemented Oracle RAC 11gR2 using NFS and wanted to try building Oracle RAC using ASM in my playground (home server's).
Does anyone have any ideas on how I might be able to use ASM with out having a true network shared storage. I'm using NFS because it is part of the Red Hat Enterprise 5.5.
Any ideas are appreciated !!!

Hi,
I would't recommend NFS for RAC in a enterprise solution. However if you are doing this for your playpan, then this is what you can do.
Once the NFS shares are presented to the servers, you need to mount your filesystems on the RAC servers to access the NFS shares.
e.g, If the the following NFS shares are presented to rac nodes:
/mnt/disk1
/mnt/disk2
And let say you want to have your ocr and voting disks on /mnt/disk1 and database on /mnt/disk2.
Firstly, you need to mount the shared on one of the rac nodes as follows. I will mount /mnt/disk1 as /u01/shared for my ocr and voting disks and /mnt/disk2 as /u01/asmdata by updating my fstab file as follows:
nfs_server:/mnt/DISK1 /u01/shared nfs rw,bg,hard,nointr,rsize=32768,wsize=32768,tcp,noac,vers=3,timeo=600 0 0
nfs_server:/mnt/DISK2 /u01/asmdata nfs rw,bg,hard,nointr,rsize=32768,wsize=32768,tcp,actimeo=0,vers=3,timeo=600 0 0
Mount the FS on both servers and then create the block devices into each filesystem. You don't need to run oracleasm to create disks on it but rather change your ASM discovery path to the location where you have the block devices created and mount your asm diskgroups.
That is how I got my 11g RAC setup.
Hope that helps.
Pranilesh

Similar Messages

How to check the load balancing in Oracle 11gR2 2 node RAC

Dear All,
Can any one please assist me how to check whether the incoming connections are evenly distributing across the nodes..?
We have two nodes, when we check the sessions counts in both nodes, Most of the time we could see node -1 has more no of sessions than node-2..? So just wanted to know whether load balancing is happening or not ...? If not how to enable it and distribute the incoming connections evenly..?
Oracle 11gR2 / RHEL5

SQL> select inst_id,count(*) from gv$session where username is not null group by inst_id;
INST_ID COUNT(*)
1 43
2 40
Not sure how to check the users are connecting through scan or not ..? But below are scan setttings...
SQL> !srvctl config scan_listener
SCAN Listener LISTENER_SCAN1 exists. Port: TCP:1521
SCAN Listener LISTENER_SCAN2 exists. Port: TCP:1521
SCAN Listener LISTENER_SCAN3 exists. Port: TCP:1521
SQL> !srvctl status scan_listener
SCAN Listener LISTENER_SCAN1 is enabled
SCAN listener LISTENER_SCAN1 is running on node za-rac-prd-02
SCAN Listener LISTENER_SCAN2 is enabled
SCAN listener LISTENER_SCAN2 is running on node za-rac-prd-01
SCAN Listener LISTENER_SCAN3 is enabled
SCAN listener LISTENER_SCAN3 is running on node za-rac-prd-01
SQL> !srvctl config scan
SCAN name: rac_prd.abc.local, Network: 1/10.100.130.0/255.255.255.192/eth6.64
SCAN VIP name: scan1, IP: /rac_prd.abc.local/10.100.130.55
SCAN VIP name: scan2, IP: /rac_prd.abc.local/10.100.130.54
SCAN VIP name: scan3, IP: /rac_prd.abc.local/10.100.130.53
SQL>

How to open the second VM in Oracle 11gR2 2-nodes RAC system ?

Folks,
Hello. I have been installing Oracle Database 11gR2 RAC system using 2 nodes that are 2 Virtual Machines (rac1 and rac2) on the top of VMPLayer 3.
I follow the tutorial http://appsdbaworkshop.blogspot.com/2011/10/11gr2-rac-on-linux-56-using-vmware.html to do.
The original Virtual Machine rac1 has run correctly. I configure rac1 network (eth0 and eth1) by opening VM rac1 and using command "[root@rac1\] #neat" as root user to invoke the network configuration.
For the second Virtual Machine rac2, I simply copy all files in "C:\VM\rac1" into "C:\VM\rac2". Then I have done the following:
1) In the directory "C:\VM\rac2", rename "rac1.vmx" to "rac2.vmx".
2) Change display name from "rac1" to "rac2" in the file "rac2.vmx".
The next thing to do for rac2 is to open the Virtual Machine rac2 and configure its network (eth0 and eth1) by using the command "[root@rac2\]#neat" as root user.
But by this step, I don't understand how to open the Virtual Machine rac2 so that can configure its network (eth0 and eth1).
Can any folk tell me how to open the VM rac2 to configure its network by this step ?

Hi,
But by this step, I don't understand how to open the Virtual Machine rac2 so that can configure its network (eth0 and eth1)."rac2" is a new virtual machine after you copied and changed the display name and you need to add this in the vmware enventory (I am talking about vmware server and vmware player should have the same way as it is supposed to run multiple vritual machines on your PC). Then it will be visible it to you. Now start this new machine and edit the network configuration.
Salman

Oracle 11gR2 2 node RAC on Oracle Linux - can't discover

Hi folks,
My rac1 can't discover iscis targets on openfiler, please assist/help/guide, been stuck for quite some time :-(
[root@rac1 send_targets]#
[root@rac1 send_targets]# iscsiadm -m discovery -t sendtargets -p openfiler
[root@rac1 send_targets]# ping openfiler
PING openfiler (192.168.1.11) 56(84) bytes of data.
64 bytes from openfiler (192.168.1.11): icmp_seq=1 ttl=64 time=0.284 ms
64 bytes from openfiler (192.168.1.11): icmp_seq=2 ttl=64 time=0.224 ms
64 bytes from openfiler (192.168.1.11): icmp_seq=3 ttl=64 time=0.226 ms
64 bytes from openfiler (192.168.1.11): icmp_seq=4 ttl=64 time=0.211 ms
^C
--- openfiler ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3000ms
rtt min/avg/max/mdev = 0.211/0.236/0.284/0.030 ms
[root@rac1 send_targets]# iscsiadm -m discovery -t sendtargets -p 192.168.1.11
[root@rac1 send_targets]# service iscsid status
iscsid (pid 2446) is running...
[root@rac1 send_targets]# uname -a
Linux rac1.mydomain 2.6.32-100.26.2.el5 #1 SMP Tue Jan 18 20:11:49 EST 2011 x86_64 x86_64 x86_64 GNU/Linux
[root@rac1 send_targets]#
If possible to just direct me to some link, I'm following this: http://www.oracle.com/technetwork/articles/hunter-rac11gr2-iscsi-088677.html#8
But it is not telling, if it doesn't discover ... then what?
Thanks in advance.

Hi ,
Did you install the iscsi-initiator-utils rpm package in all nodes? we must install this package in all rac nodes, and then discover the LUN in all nodes.
Also try giving the ip address of openfiler instead of giving the hostname
Regards,

Oracle 11gR2 (preferably on RAC)

We have SAP Business Objects XI 3.1, is this version of BOBJ compatible with Oracle 11gR2(preferably on RAC), if not, what is the timeline for the compatibility.

I cold not find the required documents on PAM as suggested by the previous reply. I believe uou can find the Supported Platforms Documents under sdn -> Articels -> BusinessObjects -> choose your product with Version -> choose the Supported Platforms Document for your OS. I would advise you to go through "supported platforms documents" for all your installed BoBJ products. What is termed PAM in SAP products (NW, etc.) is called PAR (Products Availability Reports (PARs) for products based on BoBJ products.
The link is:
Articles
I hope this helps.
Girish

Architectural requirements for EP?

Hi,
Urgently Looking for some excellent inputs for the following question.
1) Does portal have itz own database?
2) Architectural requirement for Implementing EP / Net weaver. What are the technical requirements in terms of Software, Hardware, licenses, database, SAP components, and other then Sap software or components?
Thanks in advance.
<b>
*POINTS TO BE GIVEN ASAP*
<b>Cheers,
*RAJ*</b></b>

> 1) Does portal have itz own database?
no, it uses the same database like netweaver.
> 2) Architectural requirement for Implementing EP /
> Net weaver. What are the technical requirements in
> terms of Software, Hardware, licenses, database, SAP
> components, and other then Sap software or
> components?
well, portal is part of of netweaver, so use the requirements from here. the slowest machine we use here is a core2duo with 4gig ram which works fine. (netweaver2004s, java+abap). Check the installationguides for a bunch of information:
service.sap.com/instguides
best regards
michael

Storage raid levels are required for ASM?

Storage raid levels are required for ASM? Can we have both storage and asm level of raid configuration on the server?

Handle:      user530956
Status Level:      Newbie
Registered:      Sep 15, 2006
Total Posts:      59
Total Questions:      26 (26 unresolved)
So many questions, without ANY answers.
http://forums.oracle.com/forums/ann.jspa?annID=718
Can we have both storage and asm level of raid configuration on the server?YES

How to configure Oracle Enterprise manager 11.2.0.1 for ASM instance

Hi All,
Please let us know How to configure Oracle Enterprise manager 11.2.0.1 for ASM instance.
Reagrds,
Vikas

Assuming an agent is running on the servers you want to monitor,
navigate to the Agent home page (Via setup --> Agent)
When in the agent home page select 'Add Database'and press [Go]
Assuming yopur database now gets recognized, select the Configure icon and enter the password for dbsnmp.
When done, press [Ok] to return to the agent home page.
Regards
Rob
http://oemgc.wordpress.com

ORACLE 10G 2 Node RAC on servers AB to 3 node 11GR2 RAC on new servers XYZ

Hi Gurus ,
We have a business requirement to upgrade existing oracle 10.2.0.4 2 Node RAC on servers A,B (HP UX 11.31 ) to 3 Node ORACLE 11GR2 on new Servers X,Y and Z(Linux and servers are from different vendor)
We don't have ASM.We have RAW file system
Now this has to be done with near zero down time.This is a very busy OLTP System.Golden Gate is not an option as Management is not going for it this time.
Storage is same for everything.I am thinking of the following ways.Please let me know if you have any better plan or if you want to correct my existing plan
Initially i thought of this way and i immediately answered myself
Plan A
1 ) Storage copy (BC etc..) exising 10g RAC Database files on A,B to new volumes allocated to Servers X,Y and Z ( I don't think it's possible as OS is different.I am not sure whether copying this way is possible or not , even if possible i am not sure whether new OS can identify these files or not)
2 ) upgrade 2 Node 10.2.0.4 on X,Y to 11GR2 .
3 ) Add a Database Node on Z
Plan B is
1) Build 3 Node brand new 11GR2 on X,Y and Z
2 ) Plan for how can you replicate the data ( This has to be a logical way)
a ) RMAN - Very time consuming as this is >50 TB Database
b) Golden Gate - Not an option.Even if we can use it , i see there are so many logical issues with golden gate
c) Expdp/impdp - forget about it :)
d) physical standby (Versions are different.If it is same version and Same OS then would have been best bet)
What would be the ideal way to do this with minium down time and with out golden gate
I think something can be done on the lines of PLAN A itself.
Requesting your help Gurus
Thanks

Hi,
Have you considered possibility to setup a logical standby and do rolling upgrade ?
Please have a look at the following:
1) http://www.oracle.com/technetwork/database/features/availability/maa-wp-11g-transientlogicalrollingu-1-131927.pdf
2) http://www.oracle.com/technetwork/database/features/availability/maa-wp-11g-upgrades-made-easy-131972.pdf
If you can practice on test setup, it looks a faster option than the others.
Regards,
Ganadeva

Help on Oracle 11gR2 (ver 11.2) installation requirement

Dear Experts,
I need help from you on Oracle DB11gR2 (ver 11.2) server installation in windows 7 32-bit architecture.
I have downloaded Oracle 11gR2 DB (32-bit) from edelivery.oracle.com site.
When the installtion is done i am getting below error, can any one please help me what are the memeory (RAM) and stored (HDD space) require to installed oracle 11g DB server
Error: System Physical memory not suffiicient
I have 2 GB RAM 500 HDD with windows 32-bit OS installed.
Note: i have increase 3 time of My RAM size memory at system virtual memory, if any body have installtion steps or screen shot document
Waiting for valiable help
Regards,
phanikanth

The minimum requirements are in the installation guide:
http://docs.oracle.com/cd/E11882_01/install.112/e24186/reqs.htm#CHDGJEJE
You need at least 1GB RAM for the database server, is it possible the OS and/or other applications already occupy more than 1GB, so you don't have enough memory for Oracle?

Strange issue in Oracle ASM on Two node RAC where in one ASM node shows all diskgroup while other node shows missing node.

We have Oracle datbase 11gR1 in RAC node with Oracle ASM.Recently our database server got crashed and we are trying to restore back services.
Using Snapshot technologyBusiness copy we had synced all our disk on storage level. Post this when we are trying to start ASM instance on node 1 it is coming and showing all diskgroups but on other node it is throwing errot with missing e diskgroup.
ORA-15032: not all alterations performed
ORA-15040: diskgroup is incomplete
ORA-15042: ASM disk "5" is missing
Expert please share your views.
Thanks,
Tushar

The I/O fabric layer on the other node failed to mount all storage LUNs - resulting in ASM being unable to mount a diskgroup as there are missing disks in that group.
Rebooting is exactly what could be needed to reset the h/w and infrastructure used by that node, in order for it to see all the storage disks again. As node 1 sees all storage disks (and is working), the disk itself on the storage system is intact and usable.
What is the o/s? What is the fabric layer? What is used on o/s for dealing with the I/O fabric layer?

What are the thread safety requirements for container implementation?

I rarely see in the TopLink documentation reference to thread safety requirements and it’s not different for container implementation.
The default TopLink implementation for:
- List is Vector
- Set is HashSet
- Collection is Vector
- Map is HashMap
Half of them are thread safe implementations List/Collection and the other half is not thread safe Set/Map.
So if I choose my own implementation do I need a thread safe implementation for?
- List ?
- Set ?
- Collection ?
- Map ?
Our application is always reading and writing via UOW. So if TopLink synchronize update on client session objects we should be safe with not thread safe implementation for any type; does TopLink synchronize update on client session objects?
The only thing we are certain is that it is not thread safe to read client session object or read read-only UOW object if they are ever expired or ever refreshed.
We got stack dump below in an application always reading and writing objects from UOW, so we believe that TopLink doesn’t synchronize correctly when it’s updating the client session objects.
java.util.ConcurrentModificationException
at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:449)
at java.util.AbstractList$Itr.next(AbstractList.java:420)
at oracle.toplink.internal.queryframework.InterfaceContainerPolicy.next(InterfaceContainerPolicy.java:149)
at oracle.toplink.internal.queryframework.ContainerPolicy.next(ContainerPolicy.java:460)
at oracle.toplink.internal.helper.WriteLockManager.traverseRelatedLocks(WriteLockManager.java:140)
at oracle.toplink.internal.helper.WriteLockManager.acquireLockAndRelatedLocks(WriteLockManager.java:116)
at oracle.toplink.internal.helper.WriteLockManager.checkAndLockObject(WriteLockManager.java:349)
at oracle.toplink.internal.helper.WriteLockManager.traverseRelatedLocks(WriteLockManager.java:144)
at oracle.toplink.internal.helper.WriteLockManager.acquireLockAndRelatedLocks(WriteLockManager.java:116)
at oracle.toplink.internal.helper.WriteLockManager.checkAndLockObject(WriteLockManager.java:349)
at oracle.toplink.internal.helper.WriteLockManager.traverseRelatedLocks(WriteLockManager.java:144)
at oracle.toplink.internal.helper.WriteLockManager.acquireLockAndRelatedLocks(WriteLockManager.java:116)
at oracle.toplink.internal.helper.WriteLockManager.acquireLocksForClone(WriteLockManager.java:56)
at oracle.toplink.publicinterface.UnitOfWork.cloneAndRegisterObject(UnitOfWork.java:756)
at oracle.toplink.publicinterface.UnitOfWork.cloneAndRegisterObject(UnitOfWork.java:714)
at oracle.toplink.internal.sessions.UnitOfWorkIdentityMapAccessor.getAndCloneCacheKeyFromParent(UnitOfWorkIdentityMapAccessor.java:153)
at oracle.toplink.internal.sessions.UnitOfWorkIdentityMapAccessor.getFromIdentityMap(UnitOfWorkIdentityMapAccessor.java:99)
at oracle.toplink.internal.sessions.IdentityMapAccessor.getFromIdentityMap(IdentityMapAccessor.java:265)
at oracle.toplink.publicinterface.UnitOfWork.registerExistingObject(UnitOfWork.java:3543)
at oracle.toplink.publicinterface.UnitOfWork.registerExistingObject(UnitOfWork.java:3503)
at oracle.toplink.queryframework.ObjectLevelReadQuery.registerIndividualResult(ObjectLevelReadQuery.java:1812)
at oracle.toplink.internal.descriptors.ObjectBuilder.buildWorkingCopyCloneNormally(ObjectBuilder.java:455)
at oracle.toplink.internal.descriptors.ObjectBuilder.buildObjectInUnitOfWork(ObjectBuilder.java:419)
at oracle.toplink.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:379)
at oracle.toplink.queryframework.ObjectLevelReadQuery.buildObject(ObjectLevelReadQuery.java:455)
at oracle.toplink.queryframework.ObjectLevelReadQuery.conformIndividualResult(ObjectLevelReadQuery.java:622)
at oracle.toplink.queryframework.ReadObjectQuery.conformResult(ReadObjectQuery.java:339)
at oracle.toplink.queryframework.ReadObjectQuery.registerResultInUnitOfWork(ReadObjectQuery.java:604)
at oracle.toplink.queryframework.ReadObjectQuery.executeObjectLevelReadQuery(ReadObjectQuery.java:421)
at oracle.toplink.queryframework.ObjectLevelReadQuery.executeDatabaseQuery(ObjectLevelReadQuery.java:811)
at oracle.toplink.queryframework.DatabaseQuery.execute(DatabaseQuery.java:620)
at oracle.toplink.queryframework.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:779)
at oracle.toplink.queryframework.ReadObjectQuery.execute(ReadObjectQuery.java:388)
at oracle.toplink.queryframework.ObjectLevelReadQuery.executeInUnitOfWork(ObjectLevelReadQuery.java:836)
at oracle.toplink.publicinterface.UnitOfWork.internalExecuteQuery(UnitOfWork.java:2604)
at oracle.toplink.publicinterface.Session.executeQuery(Session.java:993)
at oracle.toplink.publicinterface.Session.executeQuery(Session.java:950)

Hi Lionel,
As a general rule of thumb, the ATI Rage 128 Pro will not support a 20" LCD. That being said, there are reports of it doing just that (possibly the edition that went into the cube).
I'm not that familiar with the ins and outs of the Cube, so I can't give you authoritative information on it.
A good place to start looking for answers is:
http://cubeowner.com/kbase_2/
Cheers!
Karl

Gathering Requirement for XI Implementation

Hi Experts,
My client need SAP Implementation in their comapny. For XI point of view what are the requirements need to Implement the XI ?
Thanks & Regards
Murali

Murali,
Get the inputs from the client on the landscape that they are using i.e. the various other systems that they have in their business and the system that are going to synchronize data with the SAP system.
Depending on this input you can get a concrete idea on the integration part and the scenarios that the XI is going to handle.
If in case there are some EDI systems which has to talk to the SAP system then possible an EDI SEEBURGER would also be needed for XI to integrate it with the SAP system.
Thanks
SaNv...

Resource requirement for EHS implementation

Hi EHS Gurus
I want to know the resource requirement and their skill set for EHS implementation & support project?
As per my knowledge for implementation 4 consultants are required :-
2 EHS consultants,1 MDM consultant,1 Abaper
Please confirm it.
Next do we require SD or MM conultant in EHS implementation or support prj?
Thanks in advance.

Hi,
Estimation of Resource Requirement can be done based Size of Business or scope document
like No of plants and employess
Which sub modules they are going to be implement like Product safety, Dangerous good management
This module more related to MM and QM
one ABAper required for New reports and Dat migration at Final configuration stage
Thanks
sreeni

11gR2 2 node RAC/ASM hanging

Hi,
I am attempting to install 11gR2 on two nodes.
Things seem to be going quite well from the first node, including running of root.sh
On the second node however, when running root.sh it hangs at this point :
==================================================
[root@vore /]# /u01/app/11.2.0/grid/root.sh
Running Oracle 11g root script...
The following environment variables are set as:
ORACLE_OWNER= oracle
ORACLE_HOME= /u01/app/11.2.0/grid
Enter the full pathname of the local bin directory: [usr/local/bin]:
The contents of "dbhome" have not changed. No need to overwrite.
The contents of "oraenv" have not changed. No need to overwrite.
The contents of "coraenv" have not changed. No need to overwrite.
Entries will be added to the /etc/oratab file as needed by
Database Configuration Assistant when a database is created
Finished running generic part of root script.
Now product-specific root actions will be performed.
Using configuration parameter file: /u01/app/11.2.0/grid/crs/install/crsconfig_params
==================================================================
It doesnt budge (I left it there for 3 hours at one point)
Any ideas where I should look?
Thanks
jm
Edited by: 871764 on Jul 12, 2011 2:00 PM

Thanks
Here is the output (the last part of it anyways..)
++ '[' -f /u01/app/11.2.0/grid/install/oratab ']'
++ /bin/chown oracle:oinstall /etc/oratab
++ /bin/chmod 664 /etc/oratab
+++ /bin/grep '^*:/u01/app/11.2.0/grid:' /etc/oratab
++ FOUND_OLD=
++ '[' -n '' ']'
++ echo 'Entries will be added to the /etc/oratab file as needed by'
++ /usr/bin/tee -a /u01/app/11.2.0/grid/install/root_vore.supnet.local_2011-07-11_16-31-14.log
Entries will be added to the /etc/oratab file as needed by
++ echo 'Database Configuration Assistant when a database is created'
++ /usr/bin/tee -a /u01/app/11.2.0/grid/install/root_vore.supnet.local_2011-07-11_16-31-14.log
Database Configuration Assistant when a database is created
++ '[' -f /u01/app/11.2.0/grid/install/oratab -a true = true ']'
++ echo 'Finished running generic part of root script.'
++ /usr/bin/tee -a /u01/app/11.2.0/grid/install/root_vore.supnet.local_2011-07-11_16-31-14.log
Finished running generic part of root script.
++ echo 'Now product-specific root actions will be performed.'
++ /usr/bin/tee -a /u01/app/11.2.0/grid/install/root_vore.supnet.local_2011-07-11_16-31-14.log
Now product-specific root actions will be performed.
+ /u01/app/11.2.0/grid/network/install/sqlnet/setowner.sh
+ /u01/app/11.2.0/grid/rdbms/install/rootadd_rdbms.sh
+ /u01/app/11.2.0/grid/rdbms/install/rootadd_filemap.sh
+ /u01/app/11.2.0/grid/crs/config/rootconfig.sh
Using configuration parameter file: /u01/app/11.2.0/grid/crs/install/crsconfig_params

Oracle 11gR2 (2 node) RAC Architecture requirements for ASM implementation

Similar Messages

Maybe you are looking for