RAC and oracle clusterware?

Similar Questions

• What is the difference between Oracle RAC and Oracle Clusterware?

  Hi all, it's maybe a stupid question, but I read the documentation and still do not understand what is the difference between RAC and Clusterware.
  Can someone explain it to me?
  
  Thanks in advance!

  ACR is part of database software Oracle database option should be the database mode cluster; See http://download.oracle.com/docs/cd/E11882_01/server.112/e16508/glossary.htm#CNCPT2076.

  Clusterware is a separate required to run the Oracle database in cluster mode: you can use Oracle Clusterware without Oracle database, but you cannot use Oracle Database with the option CARS without Oracle Clusterware.
  See http://download.oracle.com/docs/cd/E11882_01/rac.112/e16794/intro.htm#BABCHEEE.

  Edited by: P. Forstmann on November 19. 2010 19:11

  Edited by: P. Forstmann on November 19. 2010 19:11

• Oracle 11.2 srvctl command RAC and Oracle problem documentation.

  Hello
  
  I have a strange problem, I want to see the applications through command srvctl but I found the srvctl command has changed.
  
  When I view the documentation, I found no option applications with srvctl
  
  but when I tried this command it works
  
  [Oracle@RAC1 ~] $ srvctl status nodeapps
  Rac1-vip VIP is enabled
  Rac1-vip VIP is running on the node: rac1
  Rac2-vip VIP is enabled
  Rac2-vip VIP is running on the node: rac2
  Network is enabled
  Network runs on the node: rac1
  Network runs on the node: rac2
  GSD is disabled
  GSD is not running on the node: rac1
  GSD is not running on the node: rac2
  ONS is enabled
  The ONS daemon is running on the node: rac1
  The ONS daemon is running on the node: rac2
  [oracle@rac1 ~] $
  
  Here is the link to the documentation.
  http://download.Oracle.com/docs/CD/E14072_01/server.112/e10595/restart005.htm#CIHBBFFC
  
  you will not find in this manual, scan, gns, scan_listener, vip options and applications.
  
  else you have noticed this problem? Why these commands are not part of the manual
  
  concerning
  Amir Riaz

  Order SRVCTL
  http://download.Oracle.com/docs/CD/E14072_01/server.112/e10595/restart005.htm#

  Published by: Girish Sharma June 13, 2011 19:16
  And: http://download.oracle.com/docs/cd/B19306_01/rac.102/b14197/srvctladmin.htm

• difference between oracle clusterware and oracle database

  What is the difference between the oracle database and oracle clusterware?
  
  Thanks in advance

  Oracle clusterware manages cluster resources for example databases and the pile of entire cluster, nodes, interconnection...
  Oracle database is a DBMS which manages the application data

• just saw 1z1-068 (12 c RAC and grid infrastructure) breath, when it will be available for planning

  Hello

  I just saw 1z1-068 (12 c RAC and Oracle grid below) to VIEW (regular testing, not beta section).

  When will it be available for scheduling?

  Thank you Roger

  
  

  I just saw 1z1-068 (12 c RAC and Oracle grid below) to VIEW (regular testing, not beta section)...

  You just catch them at the 'Oops - person was supposed to be watching again' step.  There is no way that they will put this review directly to the production.  The page on the website of Oracle certification is not yet in place yet.

• How Oracle Clusterware Oracle RAC and 3rd-party Clustering with them

  I have some questions on how Oracle, Oracle RAC and 3^rd party clustering CLusterware fit between them.

  Q1. My understanding is that the Infrastructure Grid Oracle Clusterware is Oracle's Clustering solution that allows applications to cluster? that is, it is a general clusterware solution to compete with those already on the market. Is this correct?

  Q2. So why CARS is necessary for the Oracle cluster databases? An Oracle database is not just considered one application like any other? So why can not just use you GI / Clusterware to gather what you would do for any other application? Why so you need RAC to the Clusterware Summit?

  Q3. Is it is possible to combine an Oracle database using 3^rd party of clustering and not use Oracle Clusterware and CARS at all that is can you say cluster, an Oracle database using say Sun Clusters, Clustering AIX or Linux native same clustering?

  Q4. If the RAC is purely for Oracle Cluster databases - what is with the title "Real Application Clusters"? What's real on this subject?, what to ask?

  Q5. I also read that RAC can use 3^rd party of clustering. However if you decide that this is the case, then you need to install Oracle Clusterware when even (I think for interconnection must be created to allow the merger with Cache between Instances of node?).

  Is this the case?  If yes why never bore you with 3^rd party clusters? -Since you will have to install Oracle Clustering anyway - and I probably have to license (all I can think about is the scenario that you already have a cluster of 3^rd party in place and you decide that you need to use the same material for a database cluster)?

  All wisdom greatly appreciated,

  Jim

  Yes, with 10g, you had to use the CRS, and with 11g, to use the GI.  For 9i RAC, you would use Verits Cluster and Sun Cluster or anything else.

  11g RAC to GI.  As above, you can use clusterware extra if needed.  I gave the example above where to a 10g RAC we used the CRS to the cluster database/listener/vip and allowing groups of volume and filesystem in HACMP cluster.  File systems were not shared, but could switch to another node failure node, who has been treated by HACMP.  The volume of the groups containing the raw devices were shared volume groups.  For 11g, I never used extra clusterware on top of CRS and have always used ASM which is part of the GI.

  The application provider only certified database to run on 10g on AIX with raw devices.  What is strange about that?  It would be unusual that you probably expect to use ASM instead of raw devices, but it is what it is.

  See the following Note of Oracle for more information: using Oracle Clusterware with vendor Clusterware FAQ (Doc ID 332257.1)

  It is perhaps easier to explain if you can explain what problem you are trying to solve?

• Oracle 10g RAC and Unix * question rlogin *.

  I supports several bases RAC 10 g running on servers pSeries IBM using AIX 5.3. Our data base and the clusterware indicated 10.2.0.3 10.2.0.4.
  
  I understand that user equivalence and rsh/ssh must be enabled so that the environment RAC and clusterware to connect across all the cluster nodes.
  
  My problem is an issue raised by our internal system Auditors. Are asking that the commands rlogin and exec for AIX is disabled, because they feel that it is a security risk. Two orders prompt for a valid user name and password when they are used for the remote connection or execute a command.
  
  I looked at the RAC documentation search online and Metalink (I'm not an expert on Metalink, though!) as well as Google and could not find anything indicating that rlogin and exec are specifically required for CARS work properly.
  
  Can anyone offer advice or their point of view on whether or not these two commands should be enabled for RAC in order to function?
  
  I thank you in advance for any help, you can give it to me.
  
  Kind regards
  Mark

  Hi Mark,

  as far as my knowledge goes CARS use neither commands rlogin or exec.
  After the installation of the cluster Oracle simply communicates via. (Clusterware) TCP and UDP (RAC) and is only sending and receiving messages. It is not necessary at run time for a remote access connection.

  ALS if ssh and rsh are solemnly used for installation and connection (not for communication).
  Oracle recommends always to leave active because it makes life easier to activate ssh every time that a patch is necessary.

  Sebastian

• Stupid question: what is the difference between RAC and Clusterware?

  Hi all
  
  I'm about to start experimenting with the 11 G RAC Setup (to begin with, is that a cluster of a node, will try to add another later).
  
  I am reading the docs... I'm on that of clusterware installation, and it seems to indicate that the clusterware and RAC are two different things?
  
  http://download.Oracle.com/docs/CD/B28359_01/install.111/b28263/prelinux.htm#BABJHGBE
  
  With quotes like "UDP is the default for Oracle RAC interconnect protocol and TCP is the Protocol of interconnection for Oracle Clusterware. You must use a switch for interconnection. Oracle recommends using a dedicated switch. "
  
  Can someone tell me the difference? I know it sounds stupid, but it's confusing me, and I'm new on this.
  
  Cayenne
  
  Published by: cayenne on March 20, 2009 11:25
  
  Published by: cayenne on March 20, 2009 11:25

  You can make your http://www.oracle.com/technology/products/database/clusterware/clusterware_for_unbreakable_linux_faq.html#7 understand

  What is the difference between the Oracle Clusterware and Oracle Real Application Clusters?

  In case of failure of the system, put in cluster guarantees availability high for users. Redundant hardware components, such as the additional nodes, interconnection, and discs, allow the cluster to provide high availability. These redundant hardware architecture avoid the single points of failure and provide exceptional resilience fault.

  In environments Oracle Real Application Clusters (RAC), Oracle Clusterware monitors and manages Real Application Cluster databases. When a node of the cluster is started, all instances, auditors and the services are started automatically. If an instance fails, the clusterware automatically restarts the instance, so that the service is often restored prior to the notice of the administrator, he was down. In this sense Oracle Clusterware is the base of Oracle Real Application Clusters.

  In these environments CCR ensures the continuous operation of the database, but also scalability by running several bases of instance data at the same time, usually one on each node in the cluster.

• Need to understand the basics of Oracle RAC and grid technology, for training

  I need to understand the infrastructure Oracle RAC and grid, a manager / training perspective.

  I see links here and here , so a few questions:

  -What is the fundamental difference from the layman's point of view (for example, a Manager)?

  -What training options are available for a generic 11g DBA to learn this new technology? I've seen this course from a partner of Oracle ("" courses: Oracle 11 g: RAC and Grid Infrastructure Administration accelerated Release 2 ""), to a boat load of money, during 5 days I think. So we are looking for something a bit more reasonable (and accessible), for example, books, online, etc.

  WM Peck 1958 wrote:

  I need to understand the infrastructure Oracle RAC and grid, a manager / training perspective.

  I see the links here and here, so a few questions:

  -What is the fundamental difference from the layman's point of view (for example, a Manager)?

  -What training options are available for a generic 11g DBA to learn this new technology? I've seen this course from a partner of Oracle ("" courses: Oracle 11 g: RAC and Grid Infrastructure Administration accelerated Release 2 ""), to a boat load of money, during 5 days I think. So we are looking for something a bit more reasonable (and accessible), for example, books, online, etc.

  For a very basic definition, ACR is technology that is used by the database and IM is the infrastructure that makes the CAR work. In a response to the forum, this is probably all that can be said about the two. For a very long answer, you should read the links you cited.

  # 2, the course you are looking at is called accelerated because it combines two courses in one week training-RAC (4) and GI (3). So it's a day 7 curriculum that we would do in a 5 day course and who must justify its cost. But let me say, it's a really very good. But on the other side, it can be pretty intimidating to someone who does not already know these technologies. So I suggest that you send your team to each course individually and no doubt after doing some research. They can start to read the following books

  Pro Oracle Database 11g RAC on Linux

  https://www.mheducation.co.in/HTML/9781259004063.html

  And this link to doc,

  Online Oracle Database Documentation 11g Release 2 (11.2)

  Aman...

• Installation of Oracle RAC with Oracle Linux 5.8(64bit) and 11 GR 2 on EXSI 5.5

  Well, I'm trying to install oralce RAC on oracle Linux 5.8(64bit) with 11 GR 2.

  After installation oracle Linux package required by it I m is problem for oracleasmlib - 2.0.4 - 1.el6.x86_64.rpm.

  I triyed with rpm - Uvh oracleasmlib - 2.0.4 - 1.el6.x86_64.rpm and the result is rpmlib (FileDigests) and (PayloadisXz) rpmlib need for oracleasmlib - 2.0.4 - 1.el6.x86_64.rpm

  I triyed with yum localinstall oracleasmlib - 2.0.4 - 1.el6.x86_64.rpm and get an error of public key for 2.0.4 - oracleasmlib - 1.el6.x86_64.rpm is not installed...

  I tried on 3 machines and same result.

  With 32-bit I m not getting any problem

  Found the solution

  the inadequacy of the kernel version and oracle asm

• Installing Oracle Clusterware and TimesTen

  I'm trying to configure TimesTen with Oracle Clusterware and this Web site ""installing Oracle Clusterware and TimesTen ' said I should 'Install Oracle Clusterware 11.2.0.2' However, when I go and look, I found this page: 'Oracle Grid Infrastructure downloads' however as you can see on this page it has no version 11.2.0.2. " 

  
  

  Anyone know where I can get Clusterware 11.2.0.2?

  
  

  Version 12.1.0.1.0 would work for me?
  

  
  

  Thank you

  Victor

  Sorry about that, I thought it was there. It turns out that with TimesTen 11.2.2.6.0 also now support us network infrastructure 11.2.0.3 and indeed recommends that more 11.2.0.2. The 11.2.0.2 and 11.2.0.3 are available via My Oracle Support, only it seems.

  Chris

• RAC with Oracle VM and Windows Server

  Hi all,
  
  We want to implement the system with Oracle database 11g or 10g 64 bit (CARS) on the OS of Microsoft Server 2008/2003. We do not have enough licenses for all the hearts, and we want to find a way to implement the RAC database with existing licenses.
  
  Is this a good solution to use virtualization, as Oracle VM?
  How much is safe to use virtualization?
  Can we do Oracle Real Application Clusters (RAC) environments Oracle VM with Windows Server 2008 64-bit (or 2003 Server) operating system and use hard partition?
  Is it better to invest in licenses or try with Oracle VM?
  
  
  Oracle VM can be configured so that it is recognized as a difficult score.
  Hard partitions allow customers of one license these CPU used by the partition instead of license all the processors on the physical server.
  Source: oracle.com
  
  
  Thank you!

  Virtualization is not certified for Oracle RAC on Windows.

  + Software on Oracle VM [464754.1 ID] + notes States certified:

  Oracle Real Application Clusters (RAC)
  
      Oracle 10.2.0.4 and up (10gR2) and 11.1.0.7 and up (11gR1) and 11gR2 RAC for Linux x86 and Linux x86_64 certified on Oracle VM
          Guest OS: Oracle Linux 5.1 (and above) RHEL 5.1 (and above) for Linux x86 / Linux x86_64
          Paravirtualized (PV) mode only (Guest OS and drivers)
          Only supported on Oracle VM 2.1.2 and above
          Live-migration of an Oracle RAC VM is supported with Oracle VM 2.2.1 and above.
          Previous versions are not supported. Please refer to this link for best practices.
  
          Over-committing CPUs is not recommended, but supported with the following restrictions:
              The total amount of VCPUs allocated to guest domains (running Oracle RAC guests), should not exceed
              two times (2x) the amount of real CPUs / cores in the Oracle VM server.
              The amount of VCPUs allocated to a single guest domain should not exceed the amount of real CPUs /
              cores in the Oracle VM server.
              Maintain Oracle VMs default VCPU allocation for dom-0: Oracle VM will allocate 1 VCPU for each real CPU or core to dom-0.
              CPU pinning is only recommended for hard partitioning. If no hard partitioning is required, CPU pinning should not be used.
  
          Static support only (dynamic support is being planned):
              Dynamic resizing of guest virtual machine is not supported (VCPU, memory and I/O)
              Virtual Machine Pause/Restore of an active Real Application Cluster virtual machine is not supported. 
  

• core for Oracle RAC and grid on Linux x 86-64 RHEL 5.5 Infrastructure

  The manual "Oracle Grid Infrastructure Installation Guide 11 g Release 2 (11.2) for Linux.
  Chapter 2.8.2 list software requirements for Linux x 86-64 platforms
  Table 2-8, x 86-64 Linux operating system kernel requirements
  
  States, whether it is supported:
  Red Hat Enterprise Linux 5 Update 2, kernel 2.6.18 or LATER version
  Red Hat Enterprise Linux 5 update 5 with kernel unbreakable Enterprise for Linux, the kernel 2.6.32 or later version
  
  http://download.Oracle.com/docs/CD/E11882_01/install.112/e17212/prelinux.htm#BABFDJJF
  
  My doubts are (for linux x86_x64):
  "Unbreakable Enterprise Kernel for Linux" is really mandatory for RHEL 5.5 and Oracle Grid Infrastructure or is it possible to use RHEL 5.5 with RHEL kernel.
  Oracle RAC Database 11 g 2 is supported on RHEL 5.5 with RHEL kernel supported?
  
  Thank you

  Pavang is right.

  I opened a SR and Oracle Support they confirmed she RHEL 5.5 with RHEL kernel is supported (minimal support). but Oracle is highly recommend to deploy the nucleus of the unbreakable Company Oracle.

  Some reasons for their recommendations:
  http://public-yum.Oracle.com/
  The core Oracle Unbreakable Enterprise for Linux is the standard kernel used with Oracle products. The build
  and QA Oracle database systems and other Oracle products use the core of Oracle Unbreakable company
  for Linux exclusively. The core Oracle Unbreakable Enterprise for Linux is also the kernel used in Oracle
  Exadata and Oracle Exalogic systems. Oracle Unbreakable Enterprise Kernel for Linux is used in all benchmarks
  tests on Linux in which Oracle participates, as well as in the setup of valid Oracle for x 86-64.

  Thank you.

• WebLogic and Oracle RAC + DataGuard

  Hello
  
  I'm testing Weblogic 9.2 with Oracle 10g RAC (2 knots) and Oracle DataGuard and trying to find the best possible data source configuration that would deal with load balancing between RAC nodes and failover/switchback between RAC nodes and data pending. The problem I see is that all Oracle instances must be open in order to successfully deploy the data sources on Weblogic. This means that, at the time of the creation/deployment and after every restart WebLogic, all Oracle instances must be upward and running and accept connections, because otherwise the data sources will not be instantiated and therefore not accessible to the consumer application.
  Is it possible to smoothly deploy data sources without having to go through the hassle of ensuring all nodes RAC and DataGuard are open?
  What I expected, it is that the data source would be instantiated but disabled if no connection is available. Having to redeploy the data source once the database is available again is a limitation regarding transparent high availability.
  Thank you.

  Hi, Yes. Configure the pool to have an initial capacity of zero. Then it will be
  deploy and not try to make connections. He'll only try when / if
  He is asked at run time. While the DBMS is not passed, the
  Data source throws an exception just until the DBMS is in place.

• X32bit Oracle Clusterware/PAP Windows Installer or Windows 64-bit?

  Hello
  
  What is your suggestion to install Oracle Clusterware RAC on Windows.
  Why choose 32-bit Windows?
  Why choose 64-bit Windows?
  
  What are the advantages and disadvantages?

  Hello

  I would certainly recommend 64-bit Windows, the main reason is the memory address limit.

  In my view there is no benefits to use Windows 32 bit with Oracle Clusterware/RAC.

  32-bit processors are 32 - bit wide address registers (can handle up to 4 GB of physical RAM).

  You can use a workaround by allowing the addressing, 4, using settings in Windows (AWE/EAP). But if I want to use more than 4, I'm going to 64-bit Windows.

  The 4 GB of addressable space per process is divided into user and system space. By default, the system space is 2 GB and the private user space is 2 GB. Each user process share the same system 2 GB address space.

  Services of the Clusterware, ASM and listener will consume at least 1 GB of memory initially.
  If you create an instance to use 1Gbytes and you have 50 connections you will have problems with connections to the database that is causing the following error.

    TNS-00510: Internal limit restriction exceeded
      32-bit Windows Error: 8: Exec format error
  

   TNS-00507: Connection closed
      32-bit Windows Error: 109: Unknown error
  

  Reason: Use of memory problems. that is from memory.

  Another point:
  With 32-bit Windows using the 11.1 Clusterware/PAP, you can set automatic memory Management (AMM) (MEMORY_TARGET) but you cannot use if you create 2 Instances on the same host.

  Check this note...

  * ORA-27102, OSD-00031 impossible to extend the Memory_max_target and Memory_target spent 2GB [ID 842881.1] *.

  Oracle solution: Please install the 64-bit on a 64 bit server operating system, there is therefore no limitations of memory

  I think that's the reason that Oracle is not supported Oracle Grid Infrastructure 11.2 on 32-bit Windows. You cannot use ASM 11.2 on 32-bit Windows.

  Without a doubt there is no reason for me to use 32-bit Windows to support Oracle Clusterware.

  There are a lot of involved services that require a large memory and memory on 32-bit limitation.

  At present all the latest processors are 64-bit supported. Then install Oracle Clusterware/RAC x 64, even when you're using less memory 4, you have advantages.

  The use of 64-bit advantages are:

  64-bit Windows versions have implemented up to 16 terabytes of virtual address space
  programs 64-bit use 16 terabyte tuning model (8TB user / kernel 8TB)
  No performance penalty for the large memory capacity
  Connectivity to unlimited users
  64-bit versions of Windows allow addressing of memory sizes physics important without using EAP

  * Configuration of Windows memory: 32-bit and 64-bit [873752.1 ID] *.

  This document gives a better understanding of my point of view.
  http://levipereira.WordPress.com/2011/02/12/comparison-of-32-bit-and-64-bit-Oracle-database-performance-on-the-Dell-PowerEdge-6850-server-with-Microsoft-Windows-Server-2003/

  Kind regards
  Levi Pereira