Question about RAC and ASM

Hi,
We are thinking about build RAC using ASM for OEM database. It'll have two nodes, oracle 10g and Hitachi san with solaris ( or linux ). I've few questions about RAC and ASM.
1) Do I need to have ASM instance running on each node ? ( most likely yes... but want to make sure )
2) can I share oracle_home between ASM instance and database instance ? what is the best choice ?
3) I'm planning to use shared disks for all files, all databases.... what are the pros/cons ?
4) what should be the installation procedure ? Meaning, first create ASM instance on each node, then install cluster software, build RAC databases...... can someone explain..
5) I believe RMAN is the only option for backup since I'm using ASM, correct ?
I'm a newbie to RAC and ASM..
Thanks,

user4866039 wrote:
1) Do I need to have ASM instance running on each node ? ( most likely yes... but want to make sure )yes.
2) can I share oracle_home between ASM instance and database instance ? what is the best choice ?in 10g you can, in 11gr2 you cannot. and it might be better to seperate them because it will give you more flexibility with patching.
3) I'm planning to use shared disks for all files, all databases.... what are the pros/cons ?if you share your oracle_home you won't be able to do rolling updates. so i recommend to keep oracle_homes local.
4) what should be the installation procedure ? Meaning, first create ASM instance on each node, then install cluster software, build RAC databases...... can someone explain..follow the install guide for your respective version. for 10g you'd install clusterware first, then asm and database is last.
5) I believe RMAN is the only option for backup since I'm using ASM, correct ?pretty much. you could stop your database and dump the raw devices or use asmcmd/asmftp but rman is definitely the best choice
Bjoern

Similar Messages

  • Solaris 10 and Hitachi LUN mapping with Oracle 10g RAC and ASM?

    Hi all,
    I am working on an Oracle 10g RAC and ASM installation with Sun E6900 servers attached to a Hitachi SAN for shared storage with Sun Solaris 10 as the server OS. We are using Oracle 10g Release 2 (10.2.0.3) RAC clusterware
    for the clustering software and raw devices for shared storage and Veritas VxFs 4.1 filesystem.
    My question is this:
    How do I map the raw devices and LUNs on the Hitachi SAN to Solaris 10 OS and Oracle 10g RAC ASM?
    I am aware that with an Oracle 10g RAC and ASM instance, one needs to configure the ASM instance initialization parameter file to set the asm_diskstring setting to recognize the LUNs that are presented to the host.
    I know that Sun Solaris 10 uses /dev/rdsk/CwTxDySz naming convention at the OS level for disks. However, how would I map this to Oracle 10g ASM settings?
    I cannot find this critical piece of information ANYWHERE!!!!
    Thanks for your help!

    You don't seem to state categorically that you are using Solaris Cluster, so I'll assume it since this is mainly a forum about Solaris Cluster (and IMHO, Solaris Cluster with Clusterware is better than Clusterware on its own).
    Clusterware has to see the same device names from all cluster nodes. This is why Solaris Cluster (SC) is a positive benefit over Clusterware because SC provides an automatically managed, consistent name space. Clusterware on its own forces you to manage either the symbolic links (or worse mknods) to create a consistent namespace!
    So, given the SC consistent namespace you simple add the raw devices into the ASM configuration, i.e. /dev/did/rdsk/dXsY. If you are using Solaris Volume Manager, you would use /dev/md/<setname>/rdsk/dXXX and if you were using CVM/VxVM you would use /dev/vx/rdsk/<dg_name>/<dev_name>.
    Of course, if you genuinely are using Clusterware on its own, then you have somewhat of a management issue! ... time to think about installing SC?
    Tim
    ---

  • Oracle database 10g RAC and ASM configuration

    Hi all,
    I want to ask to everybody something about Oracle 10g RAC and ASm configuration. We plan to migrate to Oracle 10g from 9i, and we will begin configuring oracle but we have to decide which configuration are the best.
    Our materials are bellow:
    Hardware: RP 3440 (HP)
    OS : HPUX 11i Ver 1
    Storage: EVA 4000 (eva disk group)
    The problem is:
    Our supplier recommand us to use HP serviguard + HP serviceguard extension for RAC+ RAc and Raw device as configuration.
    But we want to use Oracekl Clusterware + RAC + ASM
    My question is if anybody know what is the best configuration, we want to use ASm.
    Can we use HP serviguard and ASM.
    Some documentations or link explain oracle RAC and ASM configuration will be appreciate.
    Thanks for your help.
    Regards.
    raitsarevo

    Hello,
    there's no extra RAC software package, but the option is only offered, if one of the supported cluster layers for the respective OS has been installed before.
    10.1.0.3 looks like a complete redesign, but anyway it is a patch, you have to install 10.1.0.2 first.

  • Oracle database 10g RAC and ASm installation

    Hi all,
    I want to ask to everybody something about Oracle 10g RAC and ASm configuration. We plan to migrate to Oracle 10g from 9i, and we will begin configuring oracle but we have to decide which configuration are the best.
    Our materials are bellow:
    Hardware: RP 3440 (HP)
    OS : HPUX 11i Ver 1
    Storage: EVA 4000 (eva disk group)
    The problem is:
    Our supplier recommand us to use HP serviguard + HP serviceguard extension for RAC+ RAc and Raw device as configuration.
    But we want to use Oracekl Clusterware + RAC + ASM
    My question is if anybody know what is the best configuration, we want to use ASm.
    Can we use HP serviguard and ASM.
    Some documentations or link explain oracle RAC and ASM configuration will be appreciate.
    Thanks for your help.
    Regards.
    raitsarevo

    Hi Experts ,
    Using this command
    $ emca
    STARTED EMCA at Mon Mar 09 16:13:13 GMT+07:00 2009
    Enter the following information about the database to be configured
    Listener port number:
    Following error comes:
    Exception in thread "main" java.lang.NoClassDefFoundError: oracle/sysman/emSDK/conf/InventoryLoader
    at oracle.sysman.emcp.EMConfig.getFreePorts(EMConfig.java:4225)
    at oracle.sysman.emcp.EMConfig.checkParameters(EMConfig.java:994)
    at oracle.sysman.emcp.EMConfig.perform(EMConfig.java:265)
    at oracle.sysman.emcp.EMConfigAssistant.invokeEMCA(EMConfigAssistant.java:692)
    at oracle.sysman.emcp.EMConfigAssistant.performSetup(EMConfigAssistant.java:641)
    at oracle.sysman.emcp.EMConfigAssistant.statusMain(EMConfigAssistant.java:340)
    at oracle.sysman.emcp.EMConfigAssistant.main(EMConfigAssistant.java:180)
    Moreover this command does not work on Aix 5.3
    emca -config dbcontrol db -repos recreate
    Regards,
    Edited by: LazyDBA10g on Mar 16, 2009 6:20 AM

  • Questions about RAC

    I was reading the article about installing the RAC.
    My conclussion , I can have till 127 instaces of a Oracle 10G database, working simultane. That is good really good and powerfull.
    My questions
    1º). ¿Can I have , by example, 3 , or any other number, of computer working with a HTMLDB instance or Oracle Aplication Server everyone serving pages to Internet and all then conect to one of those nodes? I think that yes, but prefer confirmation
    2º) In case of failure of any of these nodes, broken computer ,by example, and I need to replace it, or I want add new nodes to a RAC system. ¿How I can do this? or ¿Where I can find documentation about this?
    thanks for your help.

    Is posting Question about RAC some kind of thought experiment on clustering? Like, if you post the same question several tyimes do you get faster answers?
    Cheers, APC

  • RAC and ASM with geographically seperated disks

    We are planning to use RAC and ASM with four nodes. The two nodes will be at one location and another two nodes at different location. The ASM disks also will be available locally. Is it possible to configure ASM with geographycally serepared disks.
    We are thinking of two RAC and ASM setups with two nodes each and streams replication between the RACs.
    I want to know what is the best method to implement. Is it RAC with four nodes OR two RACs with two nodes each and streams replication between the RACs.

    Apart from the latency issue, which has been mentioned by others, you also need to mirror your disks between the two sites and be very careful about split brain scenarios under node or site crashes.
    You need to mirror the disks between the sites in case one site crashes completely and loses all network access. The only way the second site can carry on is if it has access to all the data disks, and the cluster control disks (terms vary for this, such as quorum or voting disk). If you do not mirror you simply do not have a resilient design. Resilience is about eliminating all single points of failures, which means duplicating everything i.e. mirroring.
    And mirroring between two remote sites adds more volume to the data traffic between the two sites. And it would need to be synchronous rather than asynchronous to guarantee no data loss. And your commits for each transaction would be limited by the round trip time to write to the remote site and get the acknowledgement back.
    Split brain is something you need to avoid with remote clusters, and local clusters too. If the network goes down between the two sites and both sites have local copies of all of the data and cluster control disks, which site becomes the primary and which one becomes the standby? You cannot have both sites coming back up as primary with active databases and accepting transactions! At this point you have split brain, and each side is processing transactions independently, and both databases are now deviating from each other with different data changes.
    I don't think a 4 node RAC environment split across geographical distances is really viable, except under small transaction volumes, and where response time (transaction time) is not critical. If you have high volumes and need fast transactions then you need to only use local RAC configurations, and replicate between the two sites asynchronously. DataGuard is easier, but you need to decide if you need Streams and how to make it work for you.
    John

  • A question about grub and USB

    Hi All
    I have a quick question about grub and USB that I can't quite find the answer to by searching.   Most of the FAQs discuss booting a full linux dristribution from USB. My situation is this.  I am getting a new computer with two drives, the second will be arch and the first will be Vista (for my wife).  I want the computer to boot the same way that my wife's machine boots at work so I don't want to install grub on the MBR.  So, is there a way to have all of the grub config files and kernels installed on the second drive and simply install to grub boot loader to the MBR of a USB stick?  My goal would be to simply plug the USB stick into the new PC and boot arch from the second drive. 
    Thanks
    Kev

    i cant say for hp's
    havent worked on any in a while
    recent machines have been coupleof dell's , vaio & emachine
    which dells do offer it at least the ones i tried , my laptop does(dell)
    all home pc's are built by me which do offer to boot individual drives
    what hp you getting it may tell in specs
    are both discs sata? if so it might not offer this option with 2 drives of same interface
    check your power supply alot of these preconfigured machines put cheap under reated power supplies in there
    & will burn your motherboard i just replaced PS(250 watt) & mobo(845gvsr) in an emachines <cheap stuff<
    i hope you researched the pc before buying ie : mobo, power supply are the biggest concerns
    i find it much more benificial to build my own machine gives me peace at mind. the cost is sometimes more in $ but not always , your biggest expense is time researching hardware
    if you live in usa the best places to start looking are bensbargains.net & pricewatch.com
    i am not affiliated with either & niether sell the hardware they are just advertisers a place to buy
    for costomized machines that i would trust is unitedmicro.com theyll asemble & test before shipping
    i have gotten 2 machines so far from them with NO PROBLEMS with hardware (knock knock)
    you may want to consider this in your next venture for pc

  • I have a Macbook Pro june 2011... I have 8GB ram but I only have 256mb VRAM... I've read some other questions about this and I realized... Why do I not have 560mb of VRAM since I have 8GB of RAM? Is there any way to get more VRAM to play games on steam?

    I have a Macbook Pro june 2011... I have 8GB ram but I only have 256mb VRAM...
    I've read some other questions about this and I realized... Why do I not have 560mb of VRAM since I have 8GB of RAM?
    Is there any way to get more VRAM to play games on steam?
    I've learned  by reading other topics that I can't upgrade my graphics card on my Macbook Pro because it's soldered into the motherboard or somthing like that, but please tell me if there is any way to get more video ram by chaning some setting or upgrading something else. I'd also like to know why I only have 256MB of VRAM when I have 8GB of RAM, since I have 8GB of RAM I thought I was supposed to have 560mb of VRAM...
    So the two questions are...
    Is there any way to upgrade my VRAM, so that I can play games on steam?
    Why do I only have 256MB VRAM when I have 8GB total RAM?
    Other Info:
    I have a quad core i7 Processor.
    My graphcics card is the AMD Radeon HD 6490M.
    I am also trying to play games on my BOOTCAMPed side of my mac, or my Windows 7 Professional side.
    THANK YOU SO MUCH IF YOU CAN REPLY,
    Dylan

    The only two items that a user can change on a MBP are the RAM and HDD (Retinas not included).  You have what the unit came with and the only way you will be able to change that is to purchase a MBP with superior graphics
    If you are very much into gaming, the I suggest A PC.  They are far superior for that type of application to a MBP.
    Ciao.

  • A few questions about MacBooks and Parallels Desktop.

    I have a few questions about MacBooks and Parallels Desktop.
    1) I understand I need at least 1GB of RAM to run Parallels Desktop but what about the hard drive, is the stock 60GB drive big enough?
    2) Related to question 1, even if it was big enough to allow me to install and run Windows would the 60GB drive be enough if I wanted to install a Linux distribution as well?
    3) This has nothing to do with Parallels Desktop but thought I'd ask it here anyway, do Apple Stores carry just the stock MacBooks, or do they carry other configurations?
    Thanks
    Keith

    1. Depend on how intensive you use that HD for saving data on both Mac OS and XP. For standard installation on both OS X and XP, the space of 60 Gb is enough.
    2. Same answer as no 1. You can install all three on that HD space, but the extra spacce available will be less and less for your data. You can save your data on external or back up on cd/dvd and erase it from the HD to keep the free space.
    Remember to leave at least 2 or 3 Gb for virtual memory usage.
    3. Just call them, maybe they don't have it in store stock, but by appointment they might configure one for you before your pick-up date.
    Good Luck

  • One question about Pricing and Conditions puzzle me for a long time!

    One question about Pricing and Conditions puzzle me for a long time.I take one example to explain my question:
    1-First,my sale order use pricing procedure RVAA01.
    2-Next,the pricing procedure RVAA01 have some condition type,such as EK01(Actual Costs),PR00(Price)....,and so on.
    3-Next,the condition type PR00 define the Access Sequences PR00 as it's Access Sequences.
    4-Next,the Access Sequences PR00 have some Condition tables,such as:
         table 118 : "Empties" Prices (Material-Dependent)
         table 5 : Customer/Material
         table 6 : Price List Type/Currency/Material
         table 4 : Material
    5-Next,I need to maintain Condition tables's Records.Such as the table 5(Customer/Material).I guess the sap would supply one screen for me to input the data of table 5.At this screen,the sap would ask me to select one table,such as table 5.When I select the table 5,the sap would go to the screen to let me input the data of table 5.But when I use the T-CODE VK31 or VK32 to maintain Condition tables's Record,I found it's total different from my guess:
    A-First,I can not found one place for me to open the table,such as table 5,to let me input the data?
    B-Second,For example,when I select the VK31->Discounts/Surcharges->By Customer/Material,the sap show the grid view at the right side.At the each line of the grid view,you need to select the Condition Type at the first field.And this make me confused very much.Why the sap need me to select one Condition Type but not the Condition table?To the normal logic,it ought not to select Condition table but not the Condition Type!
    Dear all,I'm a new one in sd.May be this is a very stupid question.But it did puzzle me for a long time.If any one can  explain this question in detail and let me understand the concept,I will appreciate him/her very much.Thank you.

    Hi,
    You said that you are using the T.codes VK31 or VK32.
    These transaction codes are used to enter condition records for standard condition types. As you can see a grid left side having all the standard condition types like price, discounts, taxes, frieghts.
    Pl check using T.code VK11 OR VK12 (change mode)
    Here you can enter the required condition type, in the intial screen. (like PR00, MWST, K004, K005 .....etc)
    After giving the condition type, press enter or click on Combinations icon on top of the screen. Then you can see all the condition tables which you maintained for that condition type. Like as you said table 118, table 5, table 6 and table 4.
    You can select any table and press enter, then you can go into the screen in which you have all the field cataglogues you maintained for that table. For example you selected combination of Customer/Material (table 5) then after you press enter then you can see customer field on top, and material fields.
    You can give all the required values and save the conditon record.
    Hope this is clear.
    REWARD IF HELPFUL.
    Regards,
    praveen

  • 2 question about GPU and Lens correction ,cs5

    Hi
    i have 2 questions about Gpu and lens correction in Cs5
    1)Filter->lens correction->search online
    i get often and almost every connection time out at the first click on search online , at the second click i get no online profile
    is it normal?
    2) question is about Gpu
    it run faster , but talking about ajustament layer
    like saturation or vibrance for example
    i found with the gpu on , a light slow refresh compared with gpu off
    i have set cache  levels 6 ,history 20
    i guess are the defaul
    well i add a saturation layer and move the saturation slide ,increase o decrease saturation
    with Gpu Off , the changes are immedially , i mean i can see in real time the increase o decrease of saturation
    with Gpu On it takes a few(very few) time more
    again is normal ?
    don't be angry , i'm going to buy cs5 and i'm unsecure ... the price make a big role
    thanks

    For what it's worth, I also see a timeout on the first [ Search Online ] click, after about half a minute delay.  Second click turns up results immediately.  This happens each time Lens Correction is started, even without restarting Photoshop, and in both 32 and 64 bit versions.  Also note that I started with one profile listed by default (though from the wrong camera) for my 40D with 28-135 zoom.
    I alsow noticed that I was seeing progress bar activity in the Lens Correction dialog while I was typing this (even though Lens Correction was NOT the active window) every time I hit the 'L' key.  Strange.
    Windows 7 x64.
    -Noel

  • Three questions about Java and Ftp

    Hello, i've the following questions about Java and Ftp:
    1- .netrc file is in $HOME directory but i can't access to this directory from java code. The following line producesan Exception (directory doesn't exists)
    FileWriter file = new FileWriter ("$HOME/.netrc");
    2- .netrc file must have the following permissions: -rw- --- --- but when i create the .netrc file the following permissions are on default: -rw- r-- r--, how can i change this permissions? (In java code, i can't use chmod.....)
    3- Are there any way to pass parameters to a .netrc file? If i get to do this i needn't change the permissions because i can't modify or create/destroy this file.
    Thanks in advanced!!!
    Kike

    1- .netrc file is in $HOME directory but i can't
    access to this directory from java code. The
    following line producesan Exception (directory
    doesn't exists)
    FileWriter file = new FileWriter ("$HOME/.netrc");$HOME would have to be replaced by a shell, I don't
    think you can use it as part of a legal path.
    Instead, use System.getProperty("user.home");
    Ok, thanks
    2- .netrc file must have the followingpermissions:
    -rw- --- --- but when i create the .netrc file the
    following permissions are on default: -rw- r--r--,
    how can i change this permissions? (In java code,i
    can't use chmod.....)Yes, you can: Runtime.exec("chmod ...");
    I need to use estrictly the .netrc with -rw- --- --- permissions
    Yes, i can use Runtime.exec ("chmod ..."); but i don't like very much this solution because is a slow solution, am i right?
    3- Are there any way to pass parameters to a.netrc
    file? If i get to do this i needn't change the
    permissions because i can't modify orcreate/destroy
    this file.I don't think so. Why do you need the .netrc file in
    Java at all? Writing a GUI frontend?I want to use automatic ftp in a java program and FTP server, the files and path are not always the same, so i can:
    - modify .netrc (for me is the complex option)
    - destroy and create a new .netrc (is easier but i have permissions problem)
    - use .netrc with parameters but i haven't found any help about it
    Thanks for your prompt reply!!!!
    Kike

  • Clone multi-node RAC and ASM to single node

    Hi everyone.
    I need clone system with 3 application server and 2 oracle database RAC and ASM to single-node. The operating system is RHEL 5.
    I see some metalink notes, but we can't found nothing. I find notes with multi-node to single-node, but nothing with RAC to non-RAC.
    The eBS version is 11.5.10.2 and database version is 10.2.0.3
    Is possible this clone?
    Thanks very much.

    Hi User;
    Please follow below and see its helpful:
    EBS R12 with RAC and non-RAC
    Re: RAC to single instance ebs R12
    Re: Clone Oracle Apps 11.5.10.2 RacDB to Non-RAC DB
    Re: CLONING R12 RAC to NON RAC CLONING giving error RMAN-05517 temporary file
    [b]Migrating the DB-Tier (DB and CM) to Two node non RAC cluster[/b]
    Also check:
    http://www.oracle.com/technology/pub/articles/chan_sing2rac_install.html
    Regard
    Helios

  • Guidelines for SGA and PGA tuning for 10gR2 RAC and ASM ?

    I am looking for tuning information on SGA and PGA tuning for Oracle 10g (10.2) RAC and ASM for a 4TB OLTP and DSS mixed environment on Solaris 10 platform.

    We are running Solaris 10 SPARC 64 bit with Oracle 10gR2 RAC Enterprise Edition and ASM on Sun servers with 32GB of RAM for memory for a 4TB OLTP database.
    It is in design phase so I do not have an existing AWR or Statspack report yet. Is there a best practices guideline on how to size parameters for the SGA (ie: shared_pool_size, etc) and PGA for this environment from Oracle?

  • Basic question about storage and safety in iMovie '11

    A very basic question about storage and safety:
    I want to keep a backup of my raw footage on my external hard drive prior to begin working on the movie in iMovie. I want to do this:
    1. Upload the digital files from my camcorder to my Desktop *(as opposed to iMovie)*
    2. Duplicate that footage/clips.
    3. Put the duplicate clips/footage into a folder labeled with the name of that footage (like "Fun At the Dentist" or "Jimmy Learns How to Yodel").
    4. Drag the folder with the footage/clips into my external hard drive into a pre-existing folder titled "Backups/duplicates of all of my raw footage/clips." This big granddaddy folder will house all of the child folders of different movies.
    5 Then, open up iMovie '11 and import the raw footage/clips from my Desktop rather than from my camcorder.
    6. Then I want to make a duplicate of my finished movie and put it in my external hard drive in a "Finished Movies" folder.
    I know that the original raw unedited footage will always be in iMovies '11 but I want the original to also exist immediately accessible in my external hard drive.
    QUESTION:
    Is this viable? Is it wise? (I know it goes an extra unnecessary step, but aside from that.)
    *Do you have any precautionary advice?* Should I do something in my iMovies '11 preferences? What?
    In earlier years with iMovie '04 or '06 (cannot recall) I made many novice errors and ended up losing audio to my finished movie. I also lost footage.
    This time around with iMovie '11 I don't to make such novice, ignorant errors.
    Thanks so much for any comments to this question.
    -L

    Yes I'm sure it will work great for you.
    The iFrame format is something Apple has come up with. The reason for its existence is unknown to me so I can only speculate. But it seems to me that Apple "invented" this format in order to have devices such as Ipod/Ipad/Iphone/Ixxx create clips that are editable on consumer hardware such as already mentioned devices but also standard Mac computers, without the need for format conversion.
    iMovie converts most input formats during import, which takes a lot of time, and this need for conversion often comes as a surprise to most people new to home video editing.
    iFrame has a resolution of 960x540 which is long way from the common standards of 1920x1080 and 1280x720. If your end target is YouTube however, this may not be too bad though. However if you intend to go with YouTube HD, you may find iFrame footage to look wrong since they are effectively upscaled to a higher resolution.
    Technically iFrame uses the H.264 algorithm, a smaller frame size (960x540) and a rather low compression scheme. This will result in large files, but the plus side is that the files are ready for editing without the need for any conversion and iMovie will natively edit the files.

Maybe you are looking for