Hi, After restart of ActiveMQ 5.4.1 i get these exceptions and hence forth there will be always this exception.
Only way to resolve this is by deleting data folder for KahaDB. Please suggest what could be wrong here and if there is any fix available for same. 2010-11-02 10:09:45,163 | ERROR | Failed to page in more queue messages | org.apache.activemq.broker.region.Queue | QueueThread:queue://account-notification-queue java.lang.RuntimeException: java.lang.RuntimeException: java.lang.NullPointerException at org.apache.activemq.broker.region.cursors.AbstractStoreCursor.reset(AbstractStoreCursor.java:102) at org.apache.activemq.broker.region.cursors.StoreQueueCursor.reset(StoreQueueCursor.java:157) at org.apache.activemq.broker.region.Queue.doPageIn(Queue.java:1363) at org.apache.activemq.broker.region.Queue.pageInMessages(Queue.java:1503) at org.apache.activemq.broker.region.Queue.iterate(Queue.java:1178) at org.apache.activemq.thread.DeterministicTaskRunner.runTask(DeterministicTaskRunner.java:84) at org.apache.activemq.thread.DeterministicTaskRunner$1.run(DeterministicTaskRunner.java:41) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) Caused by: java.lang.RuntimeException: java.lang.NullPointerException at org.apache.activemq.broker.region.cursors.AbstractStoreCursor.fillBatch(AbstractStoreCursor.java:230) at org.apache.activemq.broker.region.cursors.AbstractStoreCursor.reset(AbstractStoreCursor.java:99) ... 9 more Caused by: java.lang.NullPointerException 2010-11-02 10:09:45,229 | ERROR | Failed to fill batch | org.apache.activemq.broker.region.cursors.AbstractStoreCursor | QueueThread:queue://account-notification-queue java.lang.NullPointerException 2010-11-02 10:09:45,229 | ERROR | Failed to fill batch | org.apache.activemq.broker.region.cursors.AbstractStoreCursor | QueueThread:queue://account-notification-queue java.lang.RuntimeException: java.lang.NullPointerException at org.apache.activemq.broker.region.cursors.AbstractStoreCursor.fillBatch(AbstractStoreCursor.java:230) at org.apache.activemq.broker.region.cursors.AbstractStoreCursor.reset(AbstractStoreCursor.java:99) at org.apache.activemq.broker.region.cursors.StoreQueueCursor.reset(StoreQueueCursor.java:157) at org.apache.activemq.broker.region.Queue.doPageIn(Queue.java:1363) at org.apache.activemq.broker.region.Queue.pageInMessages(Queue.java:1503) at org.apache.activemq.broker.region.Queue.iterate(Queue.java:1178) at org.apache.activemq.thread.DeterministicTaskRunner.runTask(DeterministicTaskRunner.java:84) at org.apache.activemq.thread.DeterministicTaskRunner$1.run(DeterministicTaskRunner.java:41) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) Caused by: java.lang.NullPointerException 2010-11-02 10:09:45,229 | ERROR | Failed to page in more queue messages | org.apache.activemq.broker.region.Queue | QueueThread:queue://account-notification-queue java.lang.RuntimeException: java.lang.RuntimeException: java.lang.NullPointerException at org.apache.activemq.broker.region.cursors.AbstractStoreCursor.reset(AbstractStoreCursor.java:102) at org.apache.activemq.broker.region.cursors.StoreQueueCursor.reset(StoreQueueCursor.java:157) at org.apache.activemq.broker.region.Queue.doPageIn(Queue.java:1363) at org.apache.activemq.broker.region.Queue.pageInMessages(Queue.java:1503) at org.apache.activemq.broker.region.Queue.iterate(Queue.java:1178) at org.apache.activemq.thread.DeterministicTaskRunner.runTask(DeterministicTaskRunner.java:84) at org.apache.activemq.thread.DeterministicTaskRunner$1.run(DeterministicTaskRunner.java:41) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) Caused by: java.lang.RuntimeException: java.lang.NullPointerException at org.apache.activemq.broker.region.cursors.AbstractStoreCursor.fillBatch(AbstractStoreCursor.java:230) at org.apache.activemq.broker.region.cursors.AbstractStoreCursor.reset(AbstractStoreCursor.java:99) ... 9 more Caused by: java.lang.NullPointerException -- View this message in context: http://activemq.2283324.n4.nabble.com/ActiveMQ-5-4-1-Error-tp3026574p3026574.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.