[ https://issues.apache.org/jira/browse/DERBY-4856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12922780#action_12922780 ] 

Dag H. Wanvik commented on DERBY-4856:
--------------------------------------

Thread.getAllStackTraces may be useful? (>= 1.5 though)

> Add thread dump information when derby crash
> --------------------------------------------
>
>                 Key: DERBY-4856
>                 URL: https://issues.apache.org/jira/browse/DERBY-4856
>             Project: Derby
>          Issue Type: Bug
>          Components: Services
>            Reporter: Lily Wei
>            Priority: Minor
>
> On system crash or session ending error, Derby should dump as much information as possible. Such as: forcing a javacore if possible or at least thread dump and system environment information. This should only occur if a running session crashes not on boot error due to fail recovery etc.
> The IBM jvm provides a way to programmatically dump a javacore. i.e. com.ibm.jvm.Dump.JavaDump() And, the SUN jvm will force a thread dump using the Unsafe class and there may be a better way. 

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