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    Oracle 11g Security Improvements Discussed at OpenWorld

    By
    Cameron Sturdevant
    -
    November 14, 2007
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      Vipin Samar, vice president of database security at Oracle, provided some candid information about when to use some of the new security features in Oracle Database 11g, which I reviewed in early October.

      In a session at Oracle’s OpenWorld titled “Oracle Database 11g: Secure Your Data Transparently,” Samar talked about how tablespace encryption now includes support for LOBs (Large Objects). He told the audience that if you have more than four or five sensitive columns in a table then the new tablespace encryption should likely be used. Tablespace encryption is also called for if you cannot identify all of the sensitive columns or if the sensitive columns change. It’s reasonable to say that this is likely the case for applications that are used in different countries where data privacy laws may change. Depending on the size of the application and the type of data being processed, Samar said that TPC-C performance tests run by Oracle showed a 5 to 10 percent performance degradation when tablespace encryption was used.

      Oracle Database 11g also made changes in key storage and management so that the master key needed to decrypt table data is no longer stored on the server. The key management system is common to both the column-level and tablespace encryption.

      I think the changes to key management are some of the most important security improvements. Keys that are stored locally to the database are subject to greater security risks than the new method that moves keys to a wallet on a different server.

      Cameron Sturdevant
      Cameron Sturdevant is the executive editor of Enterprise Networking Planet. Prior to ENP, Cameron was technical analyst at PCWeek Labs, starting in 1997. Cameron finished up as the eWEEK Labs Technical Director in 2012. Before his extensive labs tenure Cameron paid his IT dues working in technical support and sales engineering at a software publishing firm . Cameron also spent two years with a database development firm, integrating applications with mainframe legacy programs. Cameron's areas of expertise include virtual and physical IT infrastructure, cloud computing, enterprise networking and mobility. In addition to reviews, Cameron has covered monolithic enterprise management systems throughout their lifecycles, providing the eWEEK reader with all-important history and context. Cameron takes special care in cultivating his IT manager contacts, to ensure that his analysis is grounded in real-world concern. Follow Cameron on Twitter at csturdevant, or reach him by email at [email protected]

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