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Lily Wei updated DERBY-4856: ---------------------------- Attachment: derby.log derby-4856-1a.diff Thanks to Kathey. I am able to construct first attempt to add thread dump on insane build for embedded server. I am puzzling on whether the StandardException.printStackTrace(PrintWriter s) for severity >= ExceptionSeverity.SESSION_SEVERITY is the best place to print out thread dump or place like ErrorStringBuilder.stackTrace is better. Personally, I think it shouldn't be that much noise to put in StandardException.printStackTrace(PrinterWriter s) Any opinion is welcome. Please review the code and give me your opinion. Thanks. > 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 > Attachments: corruptdb.zip, derby-4856-1a.diff, derby.log > > > 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. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.