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Former Member

HA environment for Oracle

Hi,

I have to work on finding the best HA environment to setup for a Production environment. Could some one point me to guidelines, sdn blogs or other links which may help me in this? As well from your experience, please let me know a best option.

From Oracle side, I also want to know whether to use RAC or Failsafe - pros/cons etc.

Will appreciate your every reply

thanks

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2 Answers

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    Former Member
    Sep 12, 2010 at 04:41 PM
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    Former Member
    Sep 13, 2010 at 10:42 AM

    Hello Jerryp,

    You should try running a search on SDN, you should get what you are seeking:

    For RAC you can check the following FAQ Note: 581320

    Regards,

    Siddhesh

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    • Former Member

      Here are to central entry points for HA on SDN:

      [Achieving high availability for SAP solutions|High Availability]

      [SAP on Oracle Real Application Clusters (RAC)|http://www.sdn.sap.com/irj/sdn/ora?rid=/webcontent/uuid/e9071e42-0d01-0010-4bae-dafd2e524b57] [original link is broken];

      You should be more specific on your requirements:

      - favorite OS platform

      - system availability (max. allowed downtime)

      - experience with HA solutions (the best solution will fail, if you lack trained people, overall it will be worse, than a simple non HA installation)

      In my experience simple solutions have the best availabilities. I have seen self built simple failover clusters work perfectly. Service Guard on HP-UX works fine but is already quite complex. Same goes for MSCS on windows. RAC in my opinion is superior if you consider availability, but even more complicated to setup properly.

      You should also talk to your hardware/OS vendor, because most OS have their default solution which is known to work quite good.

      Cheers Michael

      PS: do not look at HA from a database only perspective, nobody wants to hear that the database is still up, while SAP has crashed