What problems will I have with the Enterprise 2.0 Server-Side Java?

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The Enterprise Server 2.x Java VM runs in the same process as the web server, thus it is less fault tolerant;

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Its performance is behind the Java VM in 3.0;

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ES2.0 server side Java has no persistence ability;

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You cannot invoke J/JNI or other native methods (e.g., level one JDBC drivers will not work);

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Netscape is now encouraging use of the new WAI over HttpApplet.