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How similar is HACMP to Oracle RAC?

Posted on Aug 05, 2009 at 03:20 PM 122 Views

Gurus:

Have you compared HACMP with Oracle RAC? If so, could you share the difference and the similarity?

Thanks!

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    author's profile photo Former Member
    Former Member
    Posted on Aug 06, 2009 at 04:26 AM
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    Hi Linda,

    It has major difference. RAC based on Oracle Database cluster and HACMP based on Operating System based cluster.

    Oracle RAC http://www.oracle.com/technology/products/database/clustering/index.html

    HACMP - http://publib.boulder.ibm.com/infocenter/clresctr/vxrx/index.jsp?topic=/com.ibm.cluster.hacmp.doc/hacmpbooks.html

    Surendra

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  • author's profile photo Markus Doehr
    Markus Doehr
    Posted on Aug 05, 2009 at 03:26 PM
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    Hi Linda,

    seems to be a likewise question as

    How similar is HACMP to MSCS?

    In fact, you use them together:

    Note 527843 - Oracle RAC support in the SAP environment

    Markus

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  • author's profile photo Former Member
    Former Member
    Posted on Aug 14, 2009 at 12:12 PM
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    Hi Linda,

    the major difference is that HACMP is a failover cluster with one active database instance and thus a single point of failure where RAC is an active/active cluster with two or more database instances and all of them are active.

    regards

    Abdel

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