FYI, I was able to get the broker to start by disabling JMX and could see more of the error...
Corrupt journal records found in '/usr/local/AMQ/data/kaha/queue#3a#2f#2f/db-7.log So, I removed the /kaha/queue#3a#2f#2f directory and restarted w/o error...other queues were there are expected... here is the full stacktrace... 2014-03-27 09:20:28,588 | INFO | Corrupt journal records found in '/usr/local/AMQ/data/kaha/queue#3a#2f#2f/db-7.log' between offsets: 7406256..7406302 | org.apache.activemq.store.kahadb.disk.journal.Journal | main 2014-03-27 09:20:28,593 | INFO | KahaDB is version 5 | org.apache.activemq.store.kahadb.MessageDatabase | main 2014-03-27 09:20:28,595 | WARN | Cannot recover ackMessageFileMap | org.apache.activemq.store.kahadb.MessageDatabase | main java.io.StreamCorruptedException: invalid type code: 00 at java.io.ObjectInputStream$BlockDataInputStream.readBlockHeader(ObjectInputStream.java:2486) at java.io.ObjectInputStream$BlockDataInputStream.refill(ObjectInputStream.java:2521) at java.io.ObjectInputStream$BlockDataInputStream.skipBlockData(ObjectInputStream.java:2423) at java.io.ObjectInputStream.skipCustomData(ObjectInputStream.java:1919) at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1597) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1494) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1748) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1327) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:349) at org.apache.activemq.store.kahadb.MessageDatabase.recoverAckMessageFileMap(MessageDatabase.java:685) at org.apache.activemq.store.kahadb.MessageDatabase.recover(MessageDatabase.java:573) at org.apache.activemq.store.kahadb.MessageDatabase.open(MessageDatabase.java:389) at org.apache.activemq.store.kahadb.MessageDatabase.load(MessageDatabase.java:407) at org.apache.activemq.store.kahadb.MessageDatabase.doStart(MessageDatabase.java:260) at org.apache.activemq.store.kahadb.KahaDBStore.doStart(KahaDBStore.java:194) at org.apache.activemq.util.ServiceSupport.start(ServiceSupport.java:55) at org.apache.activemq.store.kahadb.KahaDBPersistenceAdapter.doStart(KahaDBPersistenceAdapter.java:215) at org.apache.activemq.util.ServiceSupport.start(ServiceSupport.java:55) at org.apache.activemq.store.kahadb.MultiKahaDBPersistenceAdapter.startAdapter(MultiKahaDBPersistenceAdapter.java:179) at org.apache.activemq.store.kahadb.MultiKahaDBPersistenceAdapter.registerExistingAdapter(MultiKahaDBPersistenceAdapter.java:351) at org.apache.activemq.store.kahadb.MultiKahaDBPersistenceAdapter.findAndRegisterExistingAdapters(MultiKahaDBPersistenceAdapter.java:344) at org.apache.activemq.store.kahadb.MultiKahaDBPersistenceAdapter.doStart(MultiKahaDBPersistenceAdapter.java:326) at org.apache.activemq.util.ServiceSupport.start(ServiceSupport.java:55) at org.apache.activemq.broker.BrokerService.doStartPersistenceAdapter(BrokerService.java:613) at org.apache.activemq.broker.BrokerService.startPersistenceAdapter(BrokerService.java:602) at org.apache.activemq.broker.BrokerService.start(BrokerService.java:567) at org.apache.activemq.xbean.XBeanBrokerService.afterPropertiesSet(XBeanBrokerService.java:73) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:1608) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1549) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1479) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:521) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:628) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479) at org.apache.xbean.spring.context.ResourceXmlApplicationContext.<init>(ResourceXmlApplicationContext.java:64) at org.apache.xbean.spring.context.ResourceXmlApplicationContext.<init>(ResourceXmlApplicationContext.java:52) at org.apache.activemq.xbean.XBeanBrokerFactory$1.<init>(XBeanBrokerFactory.java:104) at org.apache.activemq.xbean.XBeanBrokerFactory.createApplicationContext(XBeanBrokerFactory.java:104) at org.apache.activemq.xbean.XBeanBrokerFactory.createBroker(XBeanBrokerFactory.java:67) at org.apache.activemq.broker.BrokerFactory.createBroker(BrokerFactory.java:71) at org.apache.activemq.broker.BrokerFactory.createBroker(BrokerFactory.java:54) at org.apache.activemq.console.command.StartCommand.runTask(StartCommand.java:87) at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:57) at org.apache.activemq.console.command.ShellCommand.runTask(ShellCommand.java:150) at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:57) at org.apache.activemq.console.command.ShellCommand.main(ShellCommand.java:104) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.activemq.console.Main.runTaskClass(Main.java:262) at org.apache.activemq.console.Main.main(Main.java:115) boday wrote > any other thoughts on this? we have seen this several times now when we > restart AMQ (using mkahadb) with messages in the queues. we have had to > archive the entire data directory to restart...any other way to recover > this data (manually moving files back in or something)? otherwise, these > queues/messages are orphaned/lost -- 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