Oracle RAC, Need a quick overview

Any good sites or docs that can give me a good overview of RAC? What it is, basic installation steps, basic commands, etc, etc...

A Good Overview:
http://download.oracle.com/docs/cd/B19306_01/rac.102/b28759/toc.htm
Build your own RAC by Jeff:
http://www.oracle.com/technology/pub/articles/hunter_rac11gr1_iscsi.html

Similar Messages

Does /sapmnt need in cluster file system(SAP ECC 6.0 with oracle RAC)

We are going to be installing SAP with Oracle 10.2.0.4 RAC on Linux SuSE 10 and OCFS2. The Oracle RAC documentation states:
You must store the following components in the cluster file system when you use RAC
in the SAP environment:
- Oracle Clusterware (CRS) Home
- Oracle RDBMS Home
- SAP Home (also /sapmnt)
- Voting Disks
- OCR
- Database
What I want to ask is if I really need put SAP Home(also /sapmnt) on cluster file system? I will build a two nodes oracel 10g RAC and I also have another two nodes to install SAP CI and DI. My orginial think is sapmnt is a NFS share, and mount to all four nodes(RAC node and CI/DI), and all oracle stuff was on OCFS2(only two rac nodes are OCFS), anybody can tell me if SAP Home(also /sapmnt) can be NFS mount not OCFS2, thanks.
Best regards,
Peter

Hi Peter,
I don't think you need to keep /sapmnt in ocfs2 . Reason any file system need to be in cluster is,in RAC environment, data stored in the cache of one Oracle instance to be accessed by any other instance by transferring it across the private network and preserves data integrity and cache coherency by transmitting locking and other synchronization information across cluster nodes.
AS this applies to redo files, datafiles and control files only , you should be fine with nfs mount of /sapmnt sharing across and not having ocfs2.
-SV

Software need for oracle rac 10g r2

Hi,
Can any one please give the exact link to download the Oracle Rac 10g r2 for the setup of rac.
Thanks & Regards,
Poorna Prasad.

Hi,
On linux rhel4 we are installing the Rac .I am new to this high technology i need to create a rac set up on my own can any one please help me
Here is the details of our san storage
I am going to implement the RAC set up on my san storage .Here i am having 3 blades in my san and each blade is divided in to 4 parts as Vm1,vm2,vm3.vm4 virtual machines here i need to setup the rac database on vm4 virtual machine can any one please help me how to follow .
Here first i need to configure the shared disk storage before installing the rac.
And on vm3 virtual machine we have installed the oracle database 10g software.
The rac configuration is between vm4 virtual machin on blade1 and vm4 virtual machine on blade2.
Please help me.

Need to understand basics of Oracle RAC and Grid technology, for training

I need to understand Oracle RAC and Grid infrastructure, from a manager's / training perspective.
I see links here and here, so a couple questions:
- what's the basic difference from a layman's (e.g., a manager's) perspective ?
- What training options are available for a generic 11g DBA to learn this new technology ? I've seen this course from an Oracle partner ("Course:Oracle 11g: RAC and Grid Infrastructure Administration Accelerated Release 2"), for a boat load of money, for 5 days I think. So we're looking for something a little more reasonable (and accessible), e.g., books, online, etc.

Wm Peck 1958 wrote:
I need to understand Oracle RAC and Grid infrastructure, from a manager's / training perspective.
I see links here and here, so a couple questions:
- what's the basic difference from a layman's (e.g., a manager's) perspective ?
- What training options are available for a generic 11g DBA to learn this new technology ? I've seen this course from an Oracle partner ("Course:Oracle 11g: RAC and Grid Infrastructure Administration Accelerated Release 2"), for a boat load of money, for 5 days I think. So we're looking for something a little more reasonable (and accessible), e.g., books, online, etc.
For a very basic definition, RAC is technology that is used by the database and GI is the infrastructure that makes RAC work. In a forum reply, that's probably all what can be said about both. For a very lengthy answer, you should read the links that you have quoted.
For #2, the course that you are looking at is called Accelerated as it combines two courses in a single week training-RAC(4) and GI(3). So it's a 7 day curriculum that one would be doing in a 5 day course and that should justify its cost. But let me say, it's a really really good course. But on the other side, it can be quite overwhelming for someone who doesn't know about these technologies already. So I shall suggest that you send your team to each course individually and probably after doing some homework . They can start reading the following books,
Pro Oracle Database 11g RAC on Linux
https://www.mheducation.co.in/html/9781259004063.html
And this doc link,
Oracle Database Online Documentation 11g Release 2 (11.2)
Aman....

Installation Guide needed for Oracle RAC 10G R2 Linux x86-64

Hello All,
Can someone point me to the Oracle documentation on installing Oracle RAC 10G R2 (10.2.1.0) for Linux x86-64?
Seem unable to find the required doc.
I greatly appreciate your help!
Thanks!

Additional to documentation which you can access and search from http://tahiti.oracle.com there are several good step by step installation articles which summaries documentation.
http://www.oracle.com/technology/pub/articles/tech_dba.html#linux
And you can find more similar articles at
http://www.puschitz.com/
http://www.oracle-base.com/articles/linux/ArticlesLinux.php

Need clarification for firmware & MPIO version for Oracle RAC

Dear All,
We have two-node Oracle RAC configuration 10gR2, Windos 2033 R2, 64-Bit OS using ASM and Oracle 11gR1 clusterware on HP Blades. The SAN storage is from IBM. We want to upgrade the firmware and MPIO version as per vendor recommendation.
Is there any requirement for Oracle RAC to have specific version of firmware and MPIO? Is there any matrix available for this? Or is it like both nodes should be able to see same SAN storage (LUN) irrespective of version used?
Thanks

Please note that Oracle RAC doesnt have requirement any sepcific firm ware. If you upgrade the firmware, it should not break any existing config, so pls check with IBM.
Also if you are doing any specific firmware upgrade then IBM should provide the supported version list.
Hope this help,
Regards
Satishbabu Gunukula
http://www.oracleracexpert.com

Reporting Services connections are getting dropped by Oracle RAC

My current customer is using Oracle RAC (11g) for their data store. They currently are using SQL Server Reporting Services to connect to it. We are experiencing an issue where the connection appears to be redirected at the server which causes the connection to be lost with the client.
I am curious if this is "by design" or if we need to review some configuration settings to better handle this.
We have 3 VIPs fronting the RAC and they are all specified in the TNSNAMES.ORA file.
Any feedback or input on this issue would be greatly appreciated.

Hi,
I suggest you look at:
http://www.oracle.com/technetwork/database/clustering/overview/awm11gr2-130711.pdf
and the similar paper from 11.1:
http://www.oracle.com/technetwork/database/clustering/overview/awmrac11g-133673.pdf
This explains the basic concept, of how clients should connect to the database, and probably clarifies your issue.
In generall Oracle will not redirect during runtime, only during connection time.
This however should not be of an issue, if you connect to a service. (You shouldn't connect to a SID since 8.1.7 anymore).
Regards
Sebastian

Load balancing in Oracle RAC 11g (11.1.0.6.0)

Hi!
One of our customers use load balancing, now all users get connected against node 2.
--The configuration of load balancing will be correct I think, have worked before
--How do I verify the load on each node ?
--What can be wrong?
--Need help, what to check?
--tnsnames.ora looks like
X.world =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = X)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = X)(PORT = 1521))
(LOAD_BALANCE = yes)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = X.X.se)
Regards
T

Hi,
--The configuration of load balancing will be correct I think, have worked before
--How do I verify the load on each node ?
--What can be wrong?
--Need help, what to check?
Services
Traditionally an Oracle database provided a single service and all users connected to the same service.
A database will always have this default database service that is the database name.This service cannot be modified and will always allow you to connect to the database.
Do not use the default database service, create at least one service.
With Oracle Database 11g, a database can have many services (up to a maximum of 115 per database).
The services hide the complexity of the cluster from the client by providing a single system image for managing work. Applications and mid-tier connection pools select a service by using the Service Name in their connection data.
http://www.oracle.com/technetwork/database/clustering/overview/awmrac11g-133673.pdf
http://download.oracle.com/docs/cd/B28359_01/rac.111/b28254/hafeats.htm
Regards,
Levi Pereira

Oracle RAC not starting

Dear Experts....
I have two node Oracle RAC 11g Setup. This was working fine. We have only single public network configured under cluster. Both nodes have CE0 interfaces configured for RAC public IP. Due to hardware failure, CE0 on node2 is not working. I have another interface CE3 free on system. I have configured IP on CE3 (from OS layer using ifconfig). But unable to start Clusterware as interface is not configured under RAC.
My question is :-
Can I run different interface instances (however interface types are same) on both nodes? What changes I need to do for this?
A quick help would be appreciated...
Kind Rgds
Rajendra

You cannot have interface whos name are different on both nodes. i.e you should have CE0 on node2 if node1 was configured with CE0. If this condition is not met then clusterware wont start.
Read following from support.oracle.com which says network interface name should be same on all node.
RAC and Oracle Clusterware Best Practices and Starter Kit (Platform Independent) [ID 810394.1]
hope this help

Oracle Upgrade from Oracle RAC 9.2.0.6 to Oracle 10.2.0.4

Hi All,
Currently, we are running 4 node Oracle RAC environment with below mentioned configuration.
OS: Sun Solaris 5.9
Hardware: Sun E2900
Oracle Version: 9.2.0.6
Veritas Cluster Server: 4.1
We want to upgrade Oracle version to 10g, and currently analyzing the options to perform this. The current database size is 1TB appx and we want to spend minimum application shutdown time running on this database.
As part of upgrade, we also need to upgrade Veritas Cluster Server from 4.1 to 5.1 to support Oracle 10g. It would be great help,, if someone can pass some guideline to perform this task.
We are currently thinking about piecemeal approach, where we can upgrade each node individually and then put them back to cluster. There are some complexities involved, and its really high risk approach.
Thanks a lot in advance for help
Regards,
Manoj

Orcale 10g RAC requires you to install Oracle Clusterware. Oracle Supports running it along side a 3rd party clustering software. Not sure why you're so anxious to upgrade Veritas Clusterware when it will be trivial on the 10g db hosts.

Oracle rac templates 11g R2 buildcluster.sh error

Hi All,
am facing below error, while creating oracle rac templates. kindly let us know how to resolve below error.
===error=========================
Oracle RAC 11gR2 OneCommand (v1.2) for Oracle VM - (c) 2010-2011 Oracle Corporation
   Cksum: [1170221909 255000 racovm.sh] at Sun Jan 5 04:15:14 EST 2014
   Kernel: 2.6.18-194.0.0.0.3.el5xen (i686) [1 processor(s)] 1700 MB
2014-01-05 04:15:14:[printparams:Time :racnode1] Completed successfully in 4 seconds (0h:00m:04s)
2014-01-05 04:15:14:[setsshora:Start:racnode1] SSH Setup for the Oracle user(s)...
INFO (node:racnode1): Running as oracle: /u01/racovm/ssh/setssh-Linux.sh -s -x -c NO -h nodelist -p ***   (setup on 2 node(s): racnode1 racnode2)
ERROR: Failed to create temporary file /tmp/setssh-cretmpQY3958 on localhost, can not proceed
Exiting...
ERROR (node:racnode1): Failed to configure passwordless SSH for the oracle user
2014-01-05 04:15:17:[setsshora:Time :racnode1] Completed with errors in 3 seconds (0h:00m:03s), status: 1
2014-01-05 04:15:17:[buildcluster:Time :racnode1] Completed with errors in 58 seconds (0h:00m:58s), status: 1
thanks,
Mike.

Try this. It worked for me.
Please keep in mind that you will need wait till each step finishes successfully before move to next one
For Step1 and 2, you can skip node(s) on which you didn't execute root.sh yet.
Step 1: As root, run "$GRID_HOME/crs/install/rootcrs.pl -verbose -deconfig -force" on all nodes, except the last one.
Step 2: As root, run "$GRID_HOME/crs/install/rootcrs.pl -verbose -deconfig -force -lastnode" on last node. This command will zero out OCR and VD disk also.
Step 3: As root, run $GRID_HOME/root.sh on all node one by one

How to configure Oracle RAC for Wiki and Blog

Has anyone done Oracle RAC configuration for Oracle Wiki and Blogs?
Thanks,
Frank

Hi Andreas,
Thanks you for your help. I am trying to implement third party external LDAP authentication for APEX and Forms.
So I started with OID and SSO setup to create external Partner Applications. Some reason my oid and sso web login links are not working. I didn't find any errors. I need some help in finding the problem and direction, I already read docs on web but no proper direction. I appreciate your help.
Thanks

OIM 9.1.0.2 - Weblogic JDBC Multi Data Sources for Oracle RAC

Does OIM OIM 9.1.0.2 BP07 support Weblogic JDBC Multi Data Sources (Services>JDBC>Multi Data Sources) for Oracle RAC instead of inserting the "Oracle RAC JDBC URL" on JDBC Data Sources for xlDS and xlXADS (Services>JDBC>Data Sources> xlDS|xlXADS > Connection Poll> URL) ?
If yes, is there are any other modifications that need to be made on OIM, or just changing the data sources?

Yes, it's supported. You install against one instance directly of the Rac Server. Then you update the config.xml file and the jdbc resource in your weblogic server with the full rac address. It is documented for installation against RAC. http://docs.oracle.com/cd/E14049_01/doc.9101/e14047/database.htm#insertedID2
-Kevin

Installing OIM 9.1.0.2 on Oracle RAC

Hello friends,
I have a question about installing Oracle Identity Manager, Oracle Identity Manager need to install 9.1.0.2 as a repository having an Oracle RAC database, my question is: when you run the script prepare_xl_db.sh Do I need to edit this file to prepare the Oracle database on RAC? or can be run without any parameter edit and prepare the Oracle database in RAC
Thanks

Check for Metalink Note: 788789.1

Encountered ora-29701 during Sun Cluster for Oracle RAC 9.2.0.7 startup (UR

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 4169291

Check 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)

Oracle RAC, Need a quick overview

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