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From dag.wan...@oracle.com (Dag H. Wanvik)
Subject Re: Deadlock problem with Derby in production
Date Mon, 14 May 2012 19:12:10 GMT
"Bergquist, Brett" <BBergquist@canoga.com> writes:

> In our production environment, a deadlock occurred.   The problem was triggered by some
problem in derby, but unfortunately, the error message returned to the client is:
> [#|2012-05-10T08:10:47.761-0400|WARNING|sun-appserver2.1|org.eclipse.persistence.session.file:/opt/canoga/canogaview/glassfish/domains/domain1/applications/j2ee-apps/csem/csem-core-api.jar-csem-PU|_ThreadID=66;_ThreadName=PMCollectionActivationManager.samResetDetected;_RequestID=9e8852a5-9136-4096-94b1-b3ccbf95d810;|
> Local Exception Stack:
> Exception [EclipseLink-4002] (Eclipse Persistence Services - 1.1.3.v20091002-r5404):
> Internal Exception: java.sql.SQLException: DERBY SQL error: SQLCODE: -1, SQLSTATE: XJ001,
SQLERRMC: java.lang.NullPointerException  XJ001.U

Do you have access to derby.log at the time this happens?  

Of the server sessions threads DRDAConnThreads (597): 555 are cached on
waiting on the server side waiting to start servering new sessions, 42
seem to be involved in current connections (blocked on socket
read). Looks normal..


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