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How Service IP label can be used in HACMP with Oracle RAC environment.

  • 1.  How Service IP label can be used in HACMP with Oracle RAC environment.

    Posted Thu September 17, 2009 10:03 AM

    Originally posted by: tmr_aix


    Hi,
    My current HACMP cluster configuration with Oracle RAC is as follows.

    Cluster nodes: Node 1 and Node2
    Node 1 ip address is IP1 and Node 2 ip address is IP2.
    Node 1 has private ip address is 192.168.0.1
    Node 2 has private ip address is 192.168.0.2
    Hacmp 5.4.1 is installed and configured ..
    Cluster is started and services are running on nodes successfully.
    Installed oracle 10gr2 CRS and Database binaries. RAC is configured on concurrent lvm volumes.
    Node 1 uses one Virtual IP for RAC instance1 on node 1 which is VIP1
    Node 2 uses one Virtual IP for RAC instance2 on node 2 which is VIP2.

    Now the question is:-

    I did not configure "HACMP Service IP Labels/Addresses" , Can you please tell me what is the purpose of creating a service ip lable in this kind of setup and how it can be used in a RAC environment?
    #AIX-Forum


  • 2.  Re: How Service IP label can be used in HACMP with Oracle RAC environment.

    Posted Thu September 17, 2009 01:55 PM

    Originally posted by: kappa


    service ip label (+ associated ip address) ... is a cluster(-wide) ip address

    do you need a takeover of the cluster ip address to the 2nd node in case of a node failure?
    #AIX-Forum


  • 3.  Re: How Service IP label can be used in HACMP with Oracle RAC environment.

    Posted Fri September 18, 2009 01:50 AM

    Originally posted by: tmr_aix


    Hi,
    Thanks for the reply.
    Before answering the question , can you please tell me what do you mean by cluster ip address?
    Is it just one ip address(but no application is listening on this ip address and it is nowhere related to oracle RAC database) or the IP address where the oracle RAC should listen on?.

    Can you please compare with my setup details and tell me which ip can be configured as service ip?or do i need to have one more ip and configure that as service ip?
    #AIX-Forum


  • 4.  Re: How Service IP label can be used in HACMP with Oracle RAC environment.

    Posted Fri September 18, 2009 03:37 AM

    Originally posted by: Montecarlo


    The service address in an hacmp cluster is an ip address that can made available on a cluster node by hacmp. In other words, cluster-wide. It serves the same function as the Oracle RAC vip. In a two node RAC cluster, there will be two vips - one for each node. In the event of Oracle or node failure the failed node vip will move to the remaining node. In hacmp speak this would be a cluster with mutual takeover service addresses.
    The only reason you would want to use hacmp service addresses in a RAC environment is if you had some other application using different ip addresses that needed to be made highly available independently of the Oracle application.
    Regards, Simon
    #AIX-Forum


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