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From "Andrew Norman" <Andrew.Nor...@erudine.com>
Subject RE: Problems with Derby
Date Thu, 12 Apr 2007 12:54:33 GMT
We have found the problem, we think. The ActiveMQ project uses derby and
contains the contents of derby.jar in it's activemq.jar file.

-----Original Message-----
From: John.Embretsen@Sun.COM [mailto:John.Embretsen@Sun.COM] 
Sent: 12 April 2007 12:29
To: Derby Discussion
Subject: Re: Problems with Derby

Andrew Norman wrote:
> I have a series of unit tests for our application. Due to issues with 
> the metadata, I have upgraded to the latest official release
> and have started getting the following error message appearing in my
> Caused by: java.lang.SecurityException: sealing violation: package 
> org.apache.derby.iapi.services.crypto is sealed


> Any ideas on what I should look at.

Such sealing violations usually happen when classes in the same Java
package are 
attempted loaded from different sources (jar files). Please double check
you don't have multiple versions of the same jar files in your
especially multiple derby.jar files.


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