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Compress openquery results?

  • November 12, 2010 at 11:03 am

    #388216

    Hey guys,

    I will often use openqueries and SSIS to pull data from one of our Oracle servers in my SS2005 database. However, the WAN is a limiting factor. For example, it takes 2 minutes to run a query and another 5 minutes to transfer it over the WAN to SQL Server. Is there anyway I could compress the results of the query to make it transfer faster over the WAN?

    Also, this doesn't just have to be with openquery. I am open to any SSIS solution that could speed the transfer of data from Oracle to Sql Server.

    Thanks.

  • November 13, 2010 at 6:23 am

    #1250354

    As far as I remember OPENQUERY relies on OLEDB provider.

    OLEDB provider can be setup to transfer data in two formats which are: compressed and uncompressed.

    Since compressed is the default value most probably OLEDB is doing all it can but I will double check, may be somebody setup OLEDB to uncompressed in this particular case.

    What's the latency in between your Oracle and SQL Server hosts?

    Is this WAN public-internet based?

    _____________________________________
    Pablo (Paul) Berzukov

    Author of Understanding Database Administration available at Amazon and other bookstores.

    Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.

  • November 13, 2010 at 8:45 am

    #1250364

    Latency is 166ms. The WAN may be public internet, I am not really sure how to confirm this.

    How do I check if OLE DB Provider is set to compressed or not?

  • November 17, 2010 at 11:43 am

    #1252074

    Has anyone found out how to see of openquery is already compressing data? I looked around for a while using Google, and couldn't really find anything that helped me out.

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