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Complete state of a distributed application can be saved in a Database (Oracle) in addition to in XML
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Therefore, the previous sessions can be recovered from database in addition to XML document
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Gateway has a simple fault-tolerance model : when either proxy or the real object is down, the system will recover from the database
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An application consisting of components running at different machines can be defined in XML and started automatically.
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Instead of manually starting, Gateway servers also can be started through URL easily
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