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https://issues.apache.org/jira/browse/DERBY-5427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13119037#comment-13119037
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Lily Wei commented on DERBY-5427:
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Currently, we are using whether a booted database get a session level error to
determine whether to generate a thread dump/javacore. Adding the logic on top
of that with whether it is a active session sounds more accurate to determine a
Derby crash situation occur or not. In AuthenticationTest case, Derby is not
crashing. If we add whether it is a active session logic to the code, it should
be closer for the fix of DERBY-4586 with the goal to detecting Derby is
crashing. Can anyone suggest how to determine whether we have a active session
or not?
> Unauthorized shutdown should not generate thread dump and javacore.
> AuthenticationTest dumps over 20 javacores with IBM JVM for normal user errors
> --------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: DERBY-5427
> URL: https://issues.apache.org/jira/browse/DERBY-5427
> Project: Derby
> Issue Type: Bug
> Components: Services
> Affects Versions: 10.8.2.1
> Reporter: Kathey Marsden
> Priority: Critical
>
> If jdbcapi.AuthenticationTest is run without changing the
> derby.stream.error.extendedDiagSeverityLevel as is done in the test, it
> generates thread dumps and javacores for IBM jvms. I beleive the errors in
> this test are expected user errors and not crashes so they should *not*
> generate a thread dump or javacore. To reproduce remove this line from test:
> //Derby-4856,set the property to avoid thread dump and diagnostic info
> sysprops.put("derby.stream.error.extendedDiagSeverityLevel","50000");
> Until fixed, users can work around the issue by setting
> derby.stream.error.extendedDiagSeverityLevel to 50000 as is done in the test.
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