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From Bryan Pendleton <bpendle...@amberpoint.com>
Subject Re: Embedded or Network Framework?
Date Thu, 09 Aug 2007 15:44:11 GMT
> Please clarify..

This is a tricky problem to explain clearly; it involves drawing
deep and careful distinctions in the use of terms like "application".
Specifically, you have to understand the behavior of Java class
loaders in an application server environment.

In most situations, the current Derby mechanisms for preventing
accidental dual-boot of a database work very well, but in some
app server environments they can be fooled, and you can accidentally
have two copies of the Derby engine servicing the same database,
and then the software does not work properly.

For a deep and detailed explanation of what's going on, start here:
https://issues.apache.org/jira/browse/DERBY-700

Your questions are important and completely legitimate and you
should continue to ask them, and refine your understanding of
how the Derby software works. I'm confident that you will be able
to configure the software to work adequately for your environment,
once you fully understand how the software works, and the various
configuration choices at your disposal.

thanks,

bryan


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