Sun cluster and oracle RAC
my client is insisting on putting oracle RAC on top of sun cluster, the thing is i don't know what is the benifit of creating such an architecture, i tries to search on the internet but couldn't understand the benifits nor the advantage, Kindly if some one has implemented such an architecture to let us know the use and the benifits
Hi,
Here on my environment, there is SUNCluster only for single instances. The Clusterware Oracle is complete providing high availability and load balance for your database, you don't need sun cluster with this case, no advantages gained. The only thing controlled by SUNCluster on my RAC environment is QFS (Cluster file system from SUN).
If search on this forum, there are many discussion by this topic (suncluster X RAC) like this post Re: Sun Cluster.. Why?
Regards,
Rodrigo Mufalani
Similar Messages
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Hi all,
Need some help from all out there
In our Sun Cluster 3.1 Data Service for Oracle RAC 9.2.0.7 (Solaris 9) configuration, my team had encountered
ora-29701 *Unable to connect to Cluster Manager*
during the startup of the Oracle RAC database instances on the Oracle RAC Server resources.
We tried the attached workaround by Oracle. This workaround works well for the 1^st time but it doesnt work anymore when the server is rebooted.
Kindly help me to check whether anyone encounter the same problem as the above and able to resolve. Thanks.
Bug No. 4262155
Filed 25-MAR-2005 Updated 11-APR-2005
Product Oracle Server - Enterprise Edition Product Version 9.2.0.6.0
Platform Linux x86
Platform Version 2.4.21-9.0.1
Database Version 9.2.0.6.0
Affects Platforms Port-Specific
Severity Severe Loss of Service
Status Not a Bug. To Filer
Base Bug N/A
Fixed in Product Version No Data
Problem statement:
ORA-29701 DURING DATABASE CREATION AFTER APPLYING 9.2.0.6 PATCHSET
*** 03/25/05 07:32 am ***
TAR:
PROBLEM:
Customer applied 9.2.0.6 patchset over 9.2.0.4 patchset.
While creating the database, customer receives following error:
ORA-29701: unable to connect to Cluster Manager
However, if customer goes from 9.2.0.4 -> 9.2.0.5 -> 9.2.0.6, the problem does not occur.
DIAGNOSTIC ANALYSIS:
It seems that the problem is with libskgxn9.so shared library.
For 9.2.0.4 -> 9.2.0.5 -> 9.2.0.6, the install log shows the following:
installActions2005-03-22_03-44-42PM.log:,
[libskgxn9.so->%ORACLE_HOME%/lib/libskgxn9.so 7933 plats=1=>[46]langs=1=> en,fr,ar,bn,pt_BR,bg,fr_CA,ca,hr,cs,da,nl,ar_EG,en_GB,et,fi,de,el,iw,hu,is,in, it,ja,ko,es,lv,lt,ms,es_MX,no,pl,pt,ro,ru,zh_CN,sk,sl,es_ES,sv,th,zh_TW, tr,uk,vi]]
installActions2005-03-22_04-13-03PM.log:, [libcmdll.so ->%ORACLE_HOME%/lib/libskgxn9.so 64274 plats=1=>[46] langs=-554696704=>[en]]
For 9.2.0.4 -> 9.2.0.6, install log shows:
installActions2005-03-22_04-13-03PM.log:, [libcmdll.so ->%ORACLE_HOME%/lib/libskgxn9.so 64274 plats=1=>[46] langs=-554696704=>[en]] does not exist.
This means that while patching from 9.2.0.4 -> 9.2.0.5, Installer copies the libcmdll.so library into libskgxn9.so, while patching from 9.2.0.4 -> 9.2.0.6 does not.
ORACM is located in /app/oracle/ORACM which is different than ORACLE_HOME in customer's environment.
WORKAROUND:
Customer is using the following workaround:
cd $ORACLE_HOME/rdbms/lib make -f ins_rdbms.mk rac_on ioracle ipc_udp
RELATED BUGS:
Bug 4169291Check if following MOS note helps.
Series of ORA-7445 Errors After Applying 9.2.0.7.0 Patchset to 9.2.0.6.0 Database (Doc ID 373375.1) -
Is Veritas- or Sun Cluster needed for RAC in a Solaris Environment
Is a Veritas- or Sun Cluster needed for RAC in a Solaris Environment?
Does anyone know, when OCFS will be available for Solaris?You don't need Veritas Cluster File System, but until OCFS comes out for Solaris you need to think about backups. If you've not got a backup solution that can integrate with rman for an SBT device then backups become more tricky.
If you use ASM then you can take a backup to a "cluster filesystem" (although ASM is raw partitions think of it as a cluster filesystem), that both nodes can see. BUT you then need to get these to tape somehow, unless you've got NetBackup et al. that support RMAN and can backup direct to tape you're more stuck.
Too many people don't think about this. You could create an NFS mount and backup to this from the nodes. -
Install SAP ERP 6.0 with Linux and Oracle RAC
Hi Guru,
I want to install SAP ERP 6.0 with Linux and Oracle RAC. Is this possible?
Where do I find information?
Thanks,
Hugo.Hello Hugo,
You can use either RAC or dataguard. On note [105047|http://service.sap.com/sap/support/notes/105047]:
14. Data Guard
o You can use "Physical Standby".
o You cannot use "Logical Standby".
o You can use Data Guard Broker.
o You can use Maximum Performance Mode, Maximum Availability Mode and Maximum Protection Mode.
o In the case of Maximum Availability and Maximum Protection, you must pay particular attention to a fast network connection in order to avoid performance problems.
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60. Real Application Cluster (RAC)
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Regards,
Eduardo Rezende -
ECC 6.0 installation on HPUX Cluster and oracle database
Hi,
I need to install ECC6.0 installation on HPUX Cluster and oracle database. Can anybody plz suggest me or send any document to me ..
Thanks,
venkat.Hi Venkat,
Please download installation guide from below link:-
https://websmp105.sap-ag.de/instguides
Regards,
Anil -
Do we know of any problems with BODS and Oracle Real Application Clusters architecture? For example, a RAC TNS entry would specify one service name but multiple hosts for load balancing and failover. In BODS the connections are specified in many places (web console, datastores, job server). As far as I remember in some of those places we do have to enter the host name. Would this disqualify BODS from benefiting from RAC or would it (even worse) cause problems? Any official note by SAP on BODS and Oracle RAC?
Thanks.Hi Mahir,
As far as I know it's only the web console that requires the hostname, however I am using DS XI 3.1 and when selecting database type Oracle in the web console there is a checkbox for 'Oracle RAC'. If you check this box then you do not require to enter the hostname. -
Does oracle clusterware and oracle RAC require sun cluster
Hi,
I have to setup oracle RAC on solaris 10 SPARC. so is it necessary to install sun cluster 3.2, QFS file system on solaris
I have 2 sun sparc servers with solaris 10 installed on it and shared LUN setup(SAN disk RAID 5 partitions)
Have to have 2 node setup for RAC load balancing.
Regards
PrakashHi Prakash,
very interesting point:
As per oracle clusterware documents the cluster manager support is only for windows and linux.
In case of solaris SPARC will the cluster manager get configured ???
The term "Cluster Manager" refers to a "cluster manager" that Oracle used in 9i times and this one was indeed only available on Linux / Windows.
Therefore, let me, please, ask you something: Which version of Oracle RAC do you plan to use?
Because for 9i RAC, you would need Sun or Veritas Cluster on Solaris. The answers given here that Sun Cluster would not be required assume 10g RAC or higher.
Now, you might see other dependencies which can be resolved by Sun Cluster. I cannot comment on those.
For the RAW setup: having RAW disks (not raw logical volumes) will be fine without Veritas and ASM on top.
Hope that helps. Thanks,
Markus -
RAC: using Sun cluster or Oracle clusterware?
Going to build RAC on SUN machine (Solaris 10) and Sun SAN storage, couldn't decide how to build the foundation-----use Sun cluster 3.1 or Oracle clusterware?
Any idea? Thanks.Starting with 10g Release 2, Oracle provides its own and indipendient cluster management, i.e., Clusterware which can be used as replacement for the OS specific cluster software.
You can still use the OS level cluster, in this case, Oracle Clusterware depends on OS cluster for the node information.
If you are on 10g, you can safely, go with Oracle Clusterware.
Jaffar -
Red Hat Cluster Suite and Oracle RAC
HI Guys,
Our boss will plan to configure Red Hat Cluster Suite to replace to update oracle RAC.
Are there some experienced expert to explain advantage and risk of Red Hat Cluster Suite v Oracle RAC 11.2
Thanks
JinHi,
first of all Red Hat Cluster Suite cannot replace the RAC functionality. RAC is database Red Hat Cluster Suite, just provides clusterware. So all with what you will end up is a plain old failover cluster solution.
So in maximum Red Hat Cluster Suite can replace the Oracle Clusterware. (But not below a RAC, since this is not supported and even with integration with other clusterware Oracle Clusterware will still be there).
So what he will end up is also replacing RAC with single instance databases in a failover cluster solution, and with this will decrease a lot of RAC capabilities:
=> Rolling Upgrade (OS / Clusterware and some database patches)
=> Storage migration/consolidation
=> Fast failover (30 seconds vs. minutes).
See www.oracle.com and you will find whitepapers with differences between failover clusters and RAC.
http://www.oracle.com/technetwork/database/enterprise-edition/failover-cluster-134770.pdf
But even if there are other justifications to reduce availablity (which actually can only be costs), I still wonder, why he wants to replace Oracle Clusterware - the clusterware shipped with Oracle is far more mature than the one from the Red Hat cluster Suite.
And there is no better integration for Oracle databases in clusterware than what Oracle clusterware can provide.
Even more so, OCW is a full capable clusterware and you can build your own failover cluster solution for free.
The same would have to be done if he replaces it with redhat cluster.
PS: If someone is providing failover scripts for Oracle in Redhat clusters, it will be Redhat (but I think you have to write them yourself).
Regards
Sebastian -
Migrating a Sun Cluster Running Oracle to New Hardware
Has anyone attempted this? Essentially we are moving a Sun Cluster from one location to hardware at another location while maintaining the same node names. From what I can tell, I need to (on an install lan):
1) Load the OS
2) Configure the IPs
3) Install Sun Cluster
4) Install Oracle Parallel Server/RAC
5) Restore the data on a per node basis
6) Restore the shared data
7) Adjust, tweak, and run
Are there any pitfalls or suggestions on the approach? The shop is relatively new to clustering much less oracle clustering and the original cluster was installed by admins gone bye.I would say that Apple should be able to update your 36-months maintenance agreement with a OSXS 10.4 serial number.
As far as I know, the structure of 10.3 and 10.4 serial numbers is different (wasn't the case between 10.2 and 10.3) so I'm short of a technical answer here.
Maybe you could try :
/System/Library/ServerSetup/serversetup -setServerSerialNumber xxxx-xxx-xxx-x-xxx-xxx-xxx-xxx-xxx-xxx-x
in a Terminal window on the server. It's theorically the same as using Server Admin but maybe this could help. -
UTL_FILE_DIR and Oracle RAC
Gentlemen,
I have installed with sucess an environment with Oracle RAC with two servers. The application that runs in these servers, has batch procedures, and it has to save flat files during these processes. When the processes run with both servers something goes wrong and the system stops. It doesn´t happen when I shutdown one of the servers. I tried to setup directories in the storage system (external disks) but it wasn´t allowed too.
Does anyone know how can I setup utl_file_dir to work with both servers? Is there another parameter to set?
Thank you all,
Best regards.
Roberto Cavalcante
BrazilVCFS/CFS/NFS are just filesystems and UTL_FILE does file i/o. If you have sessions in multiple instances that write to the same file on a cluster filesystem, the outcome would be unpredictable. Most likely, the last person to write to the file would have their changes saved. Oracle DB (RAC or not) doesn't handle any concurrency related to UTL_FILE writes. So, even if you were in the same instance (non-RAC) and had two sessions writing to the same file, I don't think you'd get the desired results :). The file would likely be a mess and you'd have to use different file names or control concurrency yourself manually.
-
Hello All,
I want to install Oracle 11g R2 on AIX 6.1.
After doing some researches i found that there are some documents mentioning that HACMP should not be installed while installing Oracle RAC.
what is the use of HACMP ? Is it optional ? when should be installed and when not?
Please can you provide me all details abut HACMP and how it affects ORACLE RAC 11g R2 installation on AIX??
Regards,NB wrote:
Hello All,
I want to install Oracle 11g R2 on AIX 6.1.
After doing some researches i found that there are some documents mentioning that HACMP should not be installed while installing Oracle RAC.
what is the use of HACMP ? Is it optional ? when should be installed and when not?
Please can you provide me all details abut HACMP and how it affects ORACLE RAC 11g R2 installation on AIX??
Regards,
Hi,
HACMP is vendor clusterware (IBM technology) for cluster it is High Availability Cluster Multi Processing. When installing Oracle RAC it must installed on top of vendor clusterware.
HACMP comes in play when you use raw logical volume and it needs to be managed by HACMP.
Since 10g it is not mandatory to use HACMP so you can choose not to use it and let Oracle manage all the cluster services
Hope this helps
Cheers -
Java application (tomcat) and Oracle RAC 10gR2
Hi, I have an Oracle RAC 10gR2 (10.2.0.3) on Suse Linux Enterprise Server (3 nodes).
I have several application running on tomcat 5.X and tomcat 6.X with java 1.5 and java 1.6. Sometimes, because of hardware fail, network problems,... one of the nodes fails, and then the other 2 nodes still working and my database is up. However, the most of applications lose the connection with the database, and I must to restart the tomcat. I want to have a system more reliable and robust, and I want to prepare the tomcat's and java application for prevent it. I have read the http://drdobbs.com/java/222700353?pgno=1 and http://db360.blogspot.com/2007/01/is-your-java-application-failoverproof.html. I've been tried the example of the first url, but I don't connect with my database. However, I've probe the sample on another oracle rac (10.2.0.4) and it works. In the samples, it use the ucp.jar (11g) and ons.jar (10g) and ojdbc6.jar (11g driver).
Anyone can help me how can I configure my application for I must not to restart the tomcats??
Thanks you very much!!.The best solution for your problem is ORACLE SUPPORT.. Please raise an SR and coordinate with them.. GoodLuck!
-
Multipool with weblogic 8.1 sp3 and Oracle RAC
Hi,
I have an Oracle RAC define with 2 node.
For each node I defined a simple ConnectionPool using the Oracle thin driver 10 g.
Then I set a multipool that contains those conections pool.
This is a good solution: It works... :-)
Now I would like to use a XA Driver. The documentation say that it is not supported...
I would like to figure out why?
Does it mean that an EJB that connect to this multipool cannot participate in a XA transaction?
Will it work if I use the param KeepXAConnTillTXComplete="true" on the connectionpool? which means that I will use the same conection throughout the transaction.
Thank you
Yann.Yann Albou wrote:
Hi,
I have an Oracle RAC define with 2 node.
For each node I defined a simple ConnectionPool using the Oracle thin driver 10 g.
Then I set a multipool that contains those conections pool.
This is a good solution: It works... :-)
Now I would like to use a XA Driver. The documentation say that it is not supported...
I would like to figure out why?
Does it mean that an EJB that connect to this multipool cannot participate in a XA transaction?
Will it work if I use the param KeepXAConnTillTXComplete="true" on the connectionpool? which means that I will use the same conection throughout the transaction.
Thank you
Yann.Hi. The trouble with XA and multipools is that sometimes XA must recover after failures,
and if a multipool is involved, the transaction coordinator cannot know whether the
connection it gets from the multipool for recovery is talking to the same DBMS that was
involved in the transaction that has to be recovered.
Do check the 81sp3 documents on this issue.
Joe -
BusinessObjects Metadata Repository and Oracle RAC
What are the implications of having the BusinessObjects Metadata Repository reside in an Oracle RAC Database? Is it doable?
Yes, you can install BO repository on Oracle RA.Cluster.
Make Sure with support is Oracle RAC 11g R2 is feasible or not. Till 11G R1 it was working fine.
Thanks,
Anil
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