Here's some additional log messages I'm seeing after a restart: 2008-02-21 13:59:25,068 [eckpoint Worker] WARN JDBCPersistenceAdapter - Old message cleanup failed due to: SQL Exception: Java exception: 'GC overhead limit exceeded: java.lang.OutOfMemoryError'. 2008-02-21 13:59:39,731 [eckpoint Worker] ERROR JournalPersistenceAdapter - Failed to checkpoint a message store: edu.emory.mathcs.backport.java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: GC overhead limit exceeded edu.emory.mathcs.backport.java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: GC overhead limit exceeded at edu.emory.mathcs.backport.java.util.concurrent.FutureTask.getResult(FutureTask.java:299) at edu.emory.mathcs.backport.java.util.concurrent.FutureTask.get(FutureTask.java:118) at org.apache.activemq.store.journal.JournalPersistenceAdapter.doCheckpoint(JournalPersistenceAdapter.java:386) at org.apache.activemq.store.journal.JournalPersistenceAdapter$2.iterate(JournalPersistenceAdapter.java:129) at org.apache.activemq.thread.DedicatedTaskRunner.runTask(DedicatedTaskRunner.java:101) at org.apache.activemq.thread.DedicatedTaskRunner.access$000(DedicatedTaskRunner.java:25) at org.apache.activemq.thread.DedicatedTaskRunner$1.run(DedicatedTaskRunner.java:39) Caused by: java.lang.OutOfMemoryError: GC overhead limit exceeded 2008-02-21 14:07:15,568 [s Monitor: http] ERROR TransportStatusDetector - failed to complete a sweep for blocked clients java.lang.OutOfMemoryError: GC overhead limit exceeded 2008-02-21 14:08:16,903 [eckpoint Worker] WARN JDBCPersistenceAdapter - Old message cleanup failed due to: SQL Exception: A lock could not be obtained within the time requested 2008-02-21 14:11:48,787 [nitor: openwire] ERROR TransportStatusDetector - failed to complete a sweep for blocked clients java.lang.OutOfMemoryError: GC overhead limit exceeded 2008-02-21 14:15:18,291 [eckpoint Worker] WARN JDBCPersistenceAdapter - Old message cleanup failed due to: SQL Exception: The exception 'java.lang.OutOfMemoryError: GC overhead limit exceeded' was thrown while evaluating an expression. 2008-02-21 14:21:21,598 [eckpoint Worker] WARN JDBCPersistenceAdapter - Old message cleanup failed due to: SQL Exception: A lock could not be obtained within the time requested
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