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RAC Vs Data Guard

Discussion in 'General' started by Nicky_hayden, May 14, 2009.

  1. Nicky_hayden

    Nicky_hayden Active Member

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    Hi Everybody,

    does anybody could help me to describe the major differences between RAC and Data Guard ?
    whats the strengths and weakness of both ?

    Thanks...
     
  2. tyro

    tyro Forum Genius

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    Hi sorry since your question is very fundamental i am gonna do a copy-paste job

    From Techtarget
    From Oracle's website
     
  3. newbie_nz

    newbie_nz Active Member

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    In my opinion, they are not comparable.

    DataGuard is mainly for disaster recovery, i.e. standby database whereas RAC is for load balancing. With RAC, you do not have a disaster recovery database, if the database dies, it dies regardless of whether your instances are up or not.

    It is better to compare RAC to having an application server ... :)
     
  4. manoj96

    manoj96 Active Member

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    I am agreeing with the comment. They are common in availabilty perspective but are like day and night. Apart from availabilty, RAC and datagaurd are for 2 different purpose.
     
  5. zargon

    zargon Community Moderator Forum Guru

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    Only if that application server is hosted on a Veritas Cluster where failover is available.