12 Replies Latest reply on Mar 27, 2008 6:13 AM by Brian Stansberry

    ava.lang.ClassCastException:     java.lang.ClassNotFoundExceptio

    Stephen Davidson Newbie

      reetings.

      This starts as a database error in an EJB (a new Database Table can't be
      found -- I messed up in my Database somewhere). But the then the JCache
      gets into some kind of weird state, and you can't get ANYTHING out of
      it, taking down the entire application. Get ClassCastExceptions and
      ClassNotFoundExceptions on any Cache Access after this point (some are
      attached). The ONLY way I have found to recover so far is to
      cold start JBoss, as all access from all clients are failing at this point.

      This also happens when a Servlet exception occurs when the Cache is
      being accessed (and/or updated). I can generate and post the Servlet
      crash stack trace as well.

      Oh yeah, versions;
      Jboss-4.2.2.GA
      JCache: 1.4.1.SP5
      JDK: "1.5.0_11

      steve@system:/usr/local/java/jboss-4.2.2.GA> java -jar
      server/hrx/lib/jboss-cache-jdk50.jar

      Version: 1.4.1.SP5
      Codename: Cayenne
      CVS: $Id: Version.java 4510 2007-09-26 18:45:19Z
      manik.surtani@jboss.com $
      History: (see http://jira.jboss.com/jira/browse/JBCACHE for details)
      steve@system:/usr/local/java/jboss-4.2.2.GA> java -version
      java version "1.5.0_11"
      Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_11-b03)
      Java HotSpot(TM) Client VM (build 1.5.0_11-b03, mixed mode, sharing)

      Due to an application constraint, only one Thread would be accessing
      (Read or Write, and mostly read) any given node at any time. So I've
      reduced locking as much as possible (I hope).

      Stacktrace can be found at;
      http://j2eeguys.com/~steve/JBoss/JCacheCrash.txt

      Current config file can be found at;
      http://j2eeguys.com/~steve/JBoss/hrx-session-cache-service.xml

      Let me know if you need more details. Log is attached. Not sure what
      else is needed. I can even be persuaded to come out to Atlanta, if that
      would be helpful.

      Regards,
      Steve