[ 
https://issues.apache.org/jira/browse/AMQ-3644?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Steffen Kuche updated AMQ-3644:
-------------------------------

    Description: 
Our application was blocked by activemq when a consumer reconnects to the 
broker after a longer time.
It pointed out, that the method DefaultJDBCAdapter.recoverNextMessages took 
about *three minutes* to recover the next 20 Messages for the Store Based 
Cursor. Here is the corresponding stacktrace:
{noFormat}
"BrokerService[embedded] Task" daemon prio=10 tid=0x0000000042bcf000 nid=0x17fd 
runnable [0x00007f2b342a1000]
   java.lang.Thread.State: RUNNABLE
        at java.io.FileOutputStream.open(Native Method)
        at java.io.FileOutputStream.<init>(FileOutputStream.java:194)
        at java.io.FileOutputStream.<init>(FileOutputStream.java:145)
        at org.apache.derby.impl.io.DirFile.getOutputStream(Unknown Source)
        at org.apache.derby.impl.store.raw.data.StreamFileContainer.run(Unknown 
Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at 
org.apache.derby.impl.store.raw.data.StreamFileContainer.privGetOutputStream(Unknown
 Source)
        - locked <0x00000000f23e6640> (a 
org.apache.derby.impl.store.raw.data.StreamFileContainer)
        at 
org.apache.derby.impl.store.raw.data.StreamFileContainer.load(Unknown Source)
        at 
org.apache.derby.impl.store.raw.data.BaseDataFileFactory.addAndLoadStreamContainer(Unknown
 Source)
        at 
org.apache.derby.impl.store.raw.xact.Xact.addAndLoadStreamContainer(Unknown 
Source)
        at 
org.apache.derby.impl.store.access.sort.MergeSort.createMergeRun(Unknown Source)
        at org.apache.derby.impl.store.access.sort.MergeInserter.insert(Unknown 
Source)
        at org.apache.derby.impl.sql.execute.SortResultSet.loadSorter(Unknown 
Source)
        at org.apache.derby.impl.sql.execute.SortResultSet.openCore(Unknown 
Source)
        at 
org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl.open(Unknown Source)
        at 
org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(Unknown Source)
        at org.apache.derby.impl.sql.GenericPreparedStatement.execute(Unknown 
Source)
        at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(Unknown 
Source)
        - locked <0x00000000a4981ec8> (a 
org.apache.derby.impl.jdbc.EmbedConnection40)
        at 
org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeStatement(Unknown 
Source)
        at 
org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeQuery(Unknown Source)
        at 
org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:96)
        at 
org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:96)
        at 
org.apache.activemq.store.jdbc.adapter.DefaultJDBCAdapter.doRecoverNextMessages(DefaultJDBCAdapter.java:929)
        at 
org.apache.activemq.store.jdbc.JDBCMessageStore.recoverNextMessages(JDBCMessageStore.java:229)
        at 
org.apache.activemq.store.ProxyMessageStore.recoverNextMessages(ProxyMessageStore.java:88)
        at 
org.apache.activemq.broker.region.cursors.QueueStorePrefetch.doFillBatch(QueueStorePrefetch.java:97)
        at 
org.apache.activemq.broker.region.cursors.AbstractStoreCursor.fillBatch(AbstractStoreCursor.java:262)
        - locked <0x00000000ad06ca48> (a 
org.apache.activemq.broker.region.cursors.QueueStorePrefetch)
        at 
org.apache.activemq.broker.region.cursors.AbstractStoreCursor.reset(AbstractStoreCursor.java:110)
        at 
org.apache.activemq.broker.region.cursors.StoreQueueCursor.reset(StoreQueueCursor.java:157)
        - locked <0x00000000ad06ca00> (a 
org.apache.activemq.broker.region.cursors.StoreQueueCursor)
        at org.apache.activemq.broker.region.Queue.doPageIn(Queue.java:1678)
        at 
org.apache.activemq.broker.region.Queue.pageInMessages(Queue.java:1898)
        at org.apache.activemq.broker.region.Queue.iterate(Queue.java:1425)
        - locked <0x00000000ad06d010> (a 
org.apache.activemq.broker.region.Queue$3)
        at 
org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:122)
        at 
org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:43)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)
{noFormat}

During these three minutes the producer was blocked. This situation is 
illustrated by the stack of the producer Thread:

{noFormat}
"RMI TCP Connection(13)-10.0.0.42" daemon prio=10 tid=0x0000000041cca800 
nid=0x1716 waiting on condition [0x00007f2b2b7f3000]
   java.lang.Thread.State: WAITING (parking)
        at sun.misc.Unsafe.park(Native Method)
        - parking to wait for  <0x00000000fae32cd0> (a 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:158)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)
        at 
java.util.concurrent.ArrayBlockingQueue.take(ArrayBlockingQueue.java:317)
        at 
org.apache.activemq.transport.FutureResponse.getResult(FutureResponse.java:40)
        at 
org.apache.activemq.transport.ResponseCorrelator.request(ResponseCorrelator.java:87)
        at 
org.apache.activemq.ActiveMQConnection.syncSendPacket(ActiveMQConnection.java:1276)
        at org.apache.activemq.ActiveMQSession.send(ActiveMQSession.java:1760)
        - locked <0x00000000fae31548> (a java.lang.Object)
        at 
org.apache.activemq.ActiveMQMessageProducer.send(ActiveMQMessageProducer.java:231)
        at org.apache.activemq.pool.PooledProducer.send(PooledProducer.java:74)
        - locked <0x00000000fae31068> (a 
org.apache.activemq.ActiveMQMessageProducer)
        at org.apache.activemq.pool.PooledProducer.send(PooledProducer.java:55)
        at 
com.subshell.sophora.server.application.replication.Master.sendMessage(Master.java:117)
        at 
com.subshell.sophora.server.application.replication.Master.sendServerEvent(Master.java:79)
        at 
com.subshell.sophora.server.application.replication.ReplicationMaster.consumeEvent(ReplicationMaster.java:100)
        at 
com.subshell.sophora.server.application.manager.impl.ObservationManager.afterCompletion(ObservationManager.java:74)
        at 
org.springframework.transaction.support.TransactionSynchronizationUtils.invokeAfterCompletion(TransactionSynchronizationUtils.java:168)
        at 
org.springframework.transaction.support.AbstractPlatformTransactionManager.invokeAfterCompletion(AbstractPlatformTransactionManager.java:996)
        at 
org.springframework.transaction.support.AbstractPlatformTransactionManager.triggerAfterCompletion(AbstractPlatformTransactionManager.java:971)
        at 
org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:799)
        at 
org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723)
        at 
org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:393)
        at 
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:120)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at 
org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:80)
        at 
com.subshell.sophora.commons.profile.Profiler.profile(Profiler.java:130)
        at sun.reflect.GeneratedMethodAccessor24.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at 
org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:621)
        at 
org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:610)
        at 
org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:65)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at 
org.springframework.aop.aspectj.AspectJAfterAdvice.invoke(AspectJAfterAdvice.java:42)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:161)
        at 
org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:50)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:161)
        at 
org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:90)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at 
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
        at $Proxy37.saveDocument(Unknown Source)
        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.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
        at 
com.subshell.sophora.server.remoting.RemoteInvocationTraceInterceptor.invoke(RemoteInvocationTraceInterceptor.java:35)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at 
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
        at $Proxy40.saveDocument(Unknown Source)
        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.remoting.support.RemoteInvocation.invoke(RemoteInvocation.java:205)
        at 
org.springframework.remoting.support.DefaultRemoteInvocationExecutor.invoke(DefaultRemoteInvocationExecutor.java:38)
        at 
org.springframework.remoting.support.RemoteInvocationBasedExporter.invoke(RemoteInvocationBasedExporter.java:78)
        at 
org.springframework.remoting.rmi.RmiBasedExporter.invoke(RmiBasedExporter.java:73)
        at 
org.springframework.remoting.rmi.RmiInvocationWrapper.invoke(RmiInvocationWrapper.java:72)
        at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305)
        at sun.rmi.transport.Transport$1.run(Transport.java:159)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
        at 
sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
        at 
sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
        at 
sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)
{noFormat}

After same research it turned out, that Derby writes multiple gigabyte of 
temporary files in its tmp directory during the select statement. Afterwards 
these temporary files are deleted and rebuild when the next messages are 
requested from the message store. The problem is the PreparedStatement that is 
used for the select statement. When I changed the PreparedStatement to a normal 
Statement the execution time got lower than 10ms. 

In the attachment you can find a patch, how I fixed this issue. 
Furthermore you can find a Test-Program (you can import it as a Maven-Eclipse 
project) which reproduces this issue. 
This program creates a derby database with a the activemq Message table and 
fills it with data (2000 Messages, this can take several hours). I assumed 3MB 
for one message as our messages contain same binary data and has an average 
size of 3MB.

After the database is built one time a Statement and one time a 
PreparedStatment is used to retrieve the next messages.
The Statement takes about 1 ms and the PreparedStatement about 258805 ms. Also 
the second PreparedStatement takes as much time.

Here are the temporary files created by derby during the select Statement:
{noFormat}
insgesamt 5,4G
 287M 2011-12-23 09:48 T1324630116288.tmp
 287M 2011-12-23 09:49 T1324630116289.tmp
 287M 2011-12-23 09:49 T1324630116290.tmp
 287M 2011-12-23 09:49 T1324630116291.tmp
 287M 2011-12-23 09:49 T1324630116292.tmp
 287M 2011-12-23 09:49 T1324630116293.tmp
 287M 2011-12-23 09:50 T1324630116294.tmp
 287M 2011-12-23 09:50 T1324630116295.tmp
 287M 2011-12-23 09:50 T1324630116296.tmp
 287M 2011-12-23 09:50 T1324630116297.tmp
 287M 2011-12-23 09:51 T1324630116298.tmp
 287M 2011-12-23 09:51 T1324630116299.tmp
 287M 2011-12-23 09:51 T1324630116300.tmp
 287M 2011-12-23 09:51 T1324630116301.tmp
 287M 2011-12-23 09:51 T1324630116302.tmp
 287M 2011-12-23 09:52 T1324630116303.tmp
 287M 2011-12-23 09:52 T1324630116304.tmp
 287M 2011-12-23 09:52 T1324630116305.tmp
 284M 2011-12-23 09:52 T1324630116306.tmp
{noFormat}

The exeuction of a cleanup (DefaultJDBCAdapter.doDeleteOldMessages) also took 
about 6 Minutes.
But in this case I patched activemq not to do a cleanup at all, as our messages 
don't expire.

I'm almost sure that this issue can be observed in other methodes of the 
DefaultJDBCAdapter. But for us it was sufficient to fix it in the recovering of 
messages.


  was:
Our application was blocked by activemq when a consumer reconnects to the 
broker after a longer time.
It pointed out, that the method DefaultJDBCAdapter.recoverNextMessages took 
about *three minutes* to recover the next 20 Messages for the Store Based 
Cursor. Here is the corresponding stacktrace:
{noFormat}
"BrokerService[embedded] Task" daemon prio=10 tid=0x0000000042bcf000 nid=0x17fd 
runnable [0x00007f2b342a1000]
   java.lang.Thread.State: RUNNABLE
        at java.io.FileOutputStream.open(Native Method)
        at java.io.FileOutputStream.<init>(FileOutputStream.java:194)
        at java.io.FileOutputStream.<init>(FileOutputStream.java:145)
        at org.apache.derby.impl.io.DirFile.getOutputStream(Unknown Source)
        at org.apache.derby.impl.store.raw.data.StreamFileContainer.run(Unknown 
Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at 
org.apache.derby.impl.store.raw.data.StreamFileContainer.privGetOutputStream(Unknown
 Source)
        - locked <0x00000000f23e6640> (a 
org.apache.derby.impl.store.raw.data.StreamFileContainer)
        at 
org.apache.derby.impl.store.raw.data.StreamFileContainer.load(Unknown Source)
        at 
org.apache.derby.impl.store.raw.data.BaseDataFileFactory.addAndLoadStreamContainer(Unknown
 Source)
        at 
org.apache.derby.impl.store.raw.xact.Xact.addAndLoadStreamContainer(Unknown 
Source)
        at 
org.apache.derby.impl.store.access.sort.MergeSort.createMergeRun(Unknown Source)
        at org.apache.derby.impl.store.access.sort.MergeInserter.insert(Unknown 
Source)
        at org.apache.derby.impl.sql.execute.SortResultSet.loadSorter(Unknown 
Source)
        at org.apache.derby.impl.sql.execute.SortResultSet.openCore(Unknown 
Source)
        at 
org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl.open(Unknown Source)
        at 
org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(Unknown Source)
        at org.apache.derby.impl.sql.GenericPreparedStatement.execute(Unknown 
Source)
        at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(Unknown 
Source)
        - locked <0x00000000a4981ec8> (a 
org.apache.derby.impl.jdbc.EmbedConnection40)
        at 
org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeStatement(Unknown 
Source)
        at 
org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeQuery(Unknown Source)
        at 
org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:96)
        at 
org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:96)
        at 
org.apache.activemq.store.jdbc.adapter.DefaultJDBCAdapter.doRecoverNextMessages(DefaultJDBCAdapter.java:929)
        at 
org.apache.activemq.store.jdbc.JDBCMessageStore.recoverNextMessages(JDBCMessageStore.java:229)
        at 
org.apache.activemq.store.ProxyMessageStore.recoverNextMessages(ProxyMessageStore.java:88)
        at 
org.apache.activemq.broker.region.cursors.QueueStorePrefetch.doFillBatch(QueueStorePrefetch.java:97)
        at 
org.apache.activemq.broker.region.cursors.AbstractStoreCursor.fillBatch(AbstractStoreCursor.java:262)
        - locked <0x00000000ad06ca48> (a 
org.apache.activemq.broker.region.cursors.QueueStorePrefetch)
        at 
org.apache.activemq.broker.region.cursors.AbstractStoreCursor.reset(AbstractStoreCursor.java:110)
        at 
org.apache.activemq.broker.region.cursors.StoreQueueCursor.reset(StoreQueueCursor.java:157)
        - locked <0x00000000ad06ca00> (a 
org.apache.activemq.broker.region.cursors.StoreQueueCursor)
        at org.apache.activemq.broker.region.Queue.doPageIn(Queue.java:1678)
        at 
org.apache.activemq.broker.region.Queue.pageInMessages(Queue.java:1898)
        at org.apache.activemq.broker.region.Queue.iterate(Queue.java:1425)
        - locked <0x00000000ad06d010> (a 
org.apache.activemq.broker.region.Queue$3)
        at 
org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:122)
        at 
org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:43)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)
{noFormat}

During these three minutes the producer was blocked. This situation is 
illustrated by the stack of the producer Thread:

{noFormat}
"RMI TCP Connection(13)-10.0.0.42" daemon prio=10 tid=0x0000000041cca800 
nid=0x1716 waiting on condition [0x00007f2b2b7f3000]
   java.lang.Thread.State: WAITING (parking)
        at sun.misc.Unsafe.park(Native Method)
        - parking to wait for  <0x00000000fae32cd0> (a 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:158)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)
        at 
java.util.concurrent.ArrayBlockingQueue.take(ArrayBlockingQueue.java:317)
        at 
org.apache.activemq.transport.FutureResponse.getResult(FutureResponse.java:40)
        at 
org.apache.activemq.transport.ResponseCorrelator.request(ResponseCorrelator.java:87)
        at 
org.apache.activemq.ActiveMQConnection.syncSendPacket(ActiveMQConnection.java:1276)
        at org.apache.activemq.ActiveMQSession.send(ActiveMQSession.java:1760)
        - locked <0x00000000fae31548> (a java.lang.Object)
        at 
org.apache.activemq.ActiveMQMessageProducer.send(ActiveMQMessageProducer.java:231)
        at org.apache.activemq.pool.PooledProducer.send(PooledProducer.java:74)
        - locked <0x00000000fae31068> (a 
org.apache.activemq.ActiveMQMessageProducer)
        at org.apache.activemq.pool.PooledProducer.send(PooledProducer.java:55)
        at 
com.subshell.sophora.server.application.replication.Master.sendMessage(Master.java:117)
        at 
com.subshell.sophora.server.application.replication.Master.sendServerEvent(Master.java:79)
        at 
com.subshell.sophora.server.application.replication.ReplicationMaster.consumeEvent(ReplicationMaster.java:100)
        at 
com.subshell.sophora.server.application.manager.impl.ObservationManager.afterCompletion(ObservationManager.java:74)
        at 
org.springframework.transaction.support.TransactionSynchronizationUtils.invokeAfterCompletion(TransactionSynchronizationUtils.java:168)
        at 
org.springframework.transaction.support.AbstractPlatformTransactionManager.invokeAfterCompletion(AbstractPlatformTransactionManager.java:996)
        at 
org.springframework.transaction.support.AbstractPlatformTransactionManager.triggerAfterCompletion(AbstractPlatformTransactionManager.java:971)
        at 
org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:799)
        at 
org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723)
        at 
org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:393)
        at 
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:120)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at 
org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:80)
        at 
com.subshell.sophora.commons.profile.Profiler.profile(Profiler.java:130)
        at sun.reflect.GeneratedMethodAccessor24.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at 
org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:621)
        at 
org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:610)
        at 
org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:65)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at 
org.springframework.aop.aspectj.AspectJAfterAdvice.invoke(AspectJAfterAdvice.java:42)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:161)
        at 
org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:50)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:161)
        at 
org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:90)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at 
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
        at $Proxy37.saveDocument(Unknown Source)
        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.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
        at 
com.subshell.sophora.server.remoting.RemoteInvocationTraceInterceptor.invoke(RemoteInvocationTraceInterceptor.java:35)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at 
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
        at $Proxy40.saveDocument(Unknown Source)
        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.remoting.support.RemoteInvocation.invoke(RemoteInvocation.java:205)
        at 
org.springframework.remoting.support.DefaultRemoteInvocationExecutor.invoke(DefaultRemoteInvocationExecutor.java:38)
        at 
org.springframework.remoting.support.RemoteInvocationBasedExporter.invoke(RemoteInvocationBasedExporter.java:78)
        at 
org.springframework.remoting.rmi.RmiBasedExporter.invoke(RmiBasedExporter.java:73)
        at 
org.springframework.remoting.rmi.RmiInvocationWrapper.invoke(RmiInvocationWrapper.java:72)
        at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305)
        at sun.rmi.transport.Transport$1.run(Transport.java:159)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
        at 
sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
        at 
sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
        at 
sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)
{noFormat}

After same research it turned out, that Derby writes multiple gigabyte of 
temporary files in its tmp directory during the select statement. Afterwards 
these temporary files are deleted and rebuild when the next messages are 
requested from the message store. The problem is the PreparedStatement that is 
used for the select statement. When I changed the PreparedStatement to a normal 
Statement the execution time got lower than 10ms. 

In the attachment you can find a patch, how I fixed this issue. 
Furthermore you can find a Test-Program (you can import it as a Maven-Eclipse 
project) which reproduces this issue. 
This program creates a derby database with a the activemq Message table and 
fills it with data (2000 Messages, this can take several hours). I assumed 3MB 
for one message as our messages contain same binary data and has an average 
size of 3MB.

After the database a build one time a Statement and one time a PreparedStatment 
is used to retrieve the next messages.
The Statement takes about 1 ms and the PreparedStatement about 258805 ms. Also 
the second PreparedStatement takes as much time.

Here are the temporary files created by derby during the select Statement:
{noFormat}
insgesamt 5,4G
 287M 2011-12-23 09:48 T1324630116288.tmp
 287M 2011-12-23 09:49 T1324630116289.tmp
 287M 2011-12-23 09:49 T1324630116290.tmp
 287M 2011-12-23 09:49 T1324630116291.tmp
 287M 2011-12-23 09:49 T1324630116292.tmp
 287M 2011-12-23 09:49 T1324630116293.tmp
 287M 2011-12-23 09:50 T1324630116294.tmp
 287M 2011-12-23 09:50 T1324630116295.tmp
 287M 2011-12-23 09:50 T1324630116296.tmp
 287M 2011-12-23 09:50 T1324630116297.tmp
 287M 2011-12-23 09:51 T1324630116298.tmp
 287M 2011-12-23 09:51 T1324630116299.tmp
 287M 2011-12-23 09:51 T1324630116300.tmp
 287M 2011-12-23 09:51 T1324630116301.tmp
 287M 2011-12-23 09:51 T1324630116302.tmp
 287M 2011-12-23 09:52 T1324630116303.tmp
 287M 2011-12-23 09:52 T1324630116304.tmp
 287M 2011-12-23 09:52 T1324630116305.tmp
 284M 2011-12-23 09:52 T1324630116306.tmp
{noFormat}

The exeuction of a cleanup (DefaultJDBCAdapter.doDeleteOldMessages) also took 
about 6 Minutes.
But in this case I patched activemq not to do a cleanup at all, as our messages 
don't expire.

I'm almost sure that this issue can be observed in other methodes of the 
DefaultJDBCAdapter. But for us it was sufficient to fix it in the recovering of 
messages.


    
> Derby Persistence Adapter does not work with large queue
> --------------------------------------------------------
>
>                 Key: AMQ-3644
>                 URL: https://issues.apache.org/jira/browse/AMQ-3644
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Message Store
>    Affects Versions: 5.4.2, 5.4.3, 5.5.1
>            Reporter: Steffen Kuche
>              Labels: broker, derby, messages, persistence
>         Attachments: patch.txt, test.zip
>
>
> Our application was blocked by activemq when a consumer reconnects to the 
> broker after a longer time.
> It pointed out, that the method DefaultJDBCAdapter.recoverNextMessages took 
> about *three minutes* to recover the next 20 Messages for the Store Based 
> Cursor. Here is the corresponding stacktrace:
> {noFormat}
> "BrokerService[embedded] Task" daemon prio=10 tid=0x0000000042bcf000 
> nid=0x17fd runnable [0x00007f2b342a1000]
>    java.lang.Thread.State: RUNNABLE
>       at java.io.FileOutputStream.open(Native Method)
>       at java.io.FileOutputStream.<init>(FileOutputStream.java:194)
>       at java.io.FileOutputStream.<init>(FileOutputStream.java:145)
>       at org.apache.derby.impl.io.DirFile.getOutputStream(Unknown Source)
>       at org.apache.derby.impl.store.raw.data.StreamFileContainer.run(Unknown 
> Source)
>       at java.security.AccessController.doPrivileged(Native Method)
>       at 
> org.apache.derby.impl.store.raw.data.StreamFileContainer.privGetOutputStream(Unknown
>  Source)
>       - locked <0x00000000f23e6640> (a 
> org.apache.derby.impl.store.raw.data.StreamFileContainer)
>       at 
> org.apache.derby.impl.store.raw.data.StreamFileContainer.load(Unknown Source)
>       at 
> org.apache.derby.impl.store.raw.data.BaseDataFileFactory.addAndLoadStreamContainer(Unknown
>  Source)
>       at 
> org.apache.derby.impl.store.raw.xact.Xact.addAndLoadStreamContainer(Unknown 
> Source)
>       at 
> org.apache.derby.impl.store.access.sort.MergeSort.createMergeRun(Unknown 
> Source)
>       at org.apache.derby.impl.store.access.sort.MergeInserter.insert(Unknown 
> Source)
>       at org.apache.derby.impl.sql.execute.SortResultSet.loadSorter(Unknown 
> Source)
>       at org.apache.derby.impl.sql.execute.SortResultSet.openCore(Unknown 
> Source)
>       at 
> org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl.open(Unknown Source)
>       at 
> org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(Unknown Source)
>       at org.apache.derby.impl.sql.GenericPreparedStatement.execute(Unknown 
> Source)
>       at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(Unknown 
> Source)
>       - locked <0x00000000a4981ec8> (a 
> org.apache.derby.impl.jdbc.EmbedConnection40)
>       at 
> org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeStatement(Unknown 
> Source)
>       at 
> org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeQuery(Unknown Source)
>       at 
> org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:96)
>       at 
> org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:96)
>       at 
> org.apache.activemq.store.jdbc.adapter.DefaultJDBCAdapter.doRecoverNextMessages(DefaultJDBCAdapter.java:929)
>       at 
> org.apache.activemq.store.jdbc.JDBCMessageStore.recoverNextMessages(JDBCMessageStore.java:229)
>       at 
> org.apache.activemq.store.ProxyMessageStore.recoverNextMessages(ProxyMessageStore.java:88)
>       at 
> org.apache.activemq.broker.region.cursors.QueueStorePrefetch.doFillBatch(QueueStorePrefetch.java:97)
>       at 
> org.apache.activemq.broker.region.cursors.AbstractStoreCursor.fillBatch(AbstractStoreCursor.java:262)
>       - locked <0x00000000ad06ca48> (a 
> org.apache.activemq.broker.region.cursors.QueueStorePrefetch)
>       at 
> org.apache.activemq.broker.region.cursors.AbstractStoreCursor.reset(AbstractStoreCursor.java:110)
>       at 
> org.apache.activemq.broker.region.cursors.StoreQueueCursor.reset(StoreQueueCursor.java:157)
>       - locked <0x00000000ad06ca00> (a 
> org.apache.activemq.broker.region.cursors.StoreQueueCursor)
>       at org.apache.activemq.broker.region.Queue.doPageIn(Queue.java:1678)
>       at 
> org.apache.activemq.broker.region.Queue.pageInMessages(Queue.java:1898)
>       at org.apache.activemq.broker.region.Queue.iterate(Queue.java:1425)
>       - locked <0x00000000ad06d010> (a 
> org.apache.activemq.broker.region.Queue$3)
>       at 
> org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:122)
>       at 
> org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:43)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>       at java.lang.Thread.run(Thread.java:662)
> {noFormat}
> During these three minutes the producer was blocked. This situation is 
> illustrated by the stack of the producer Thread:
> {noFormat}
> "RMI TCP Connection(13)-10.0.0.42" daemon prio=10 tid=0x0000000041cca800 
> nid=0x1716 waiting on condition [0x00007f2b2b7f3000]
>    java.lang.Thread.State: WAITING (parking)
>       at sun.misc.Unsafe.park(Native Method)
>       - parking to wait for  <0x00000000fae32cd0> (a 
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
>       at java.util.concurrent.locks.LockSupport.park(LockSupport.java:158)
>       at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)
>       at 
> java.util.concurrent.ArrayBlockingQueue.take(ArrayBlockingQueue.java:317)
>       at 
> org.apache.activemq.transport.FutureResponse.getResult(FutureResponse.java:40)
>       at 
> org.apache.activemq.transport.ResponseCorrelator.request(ResponseCorrelator.java:87)
>       at 
> org.apache.activemq.ActiveMQConnection.syncSendPacket(ActiveMQConnection.java:1276)
>       at org.apache.activemq.ActiveMQSession.send(ActiveMQSession.java:1760)
>       - locked <0x00000000fae31548> (a java.lang.Object)
>       at 
> org.apache.activemq.ActiveMQMessageProducer.send(ActiveMQMessageProducer.java:231)
>       at org.apache.activemq.pool.PooledProducer.send(PooledProducer.java:74)
>       - locked <0x00000000fae31068> (a 
> org.apache.activemq.ActiveMQMessageProducer)
>       at org.apache.activemq.pool.PooledProducer.send(PooledProducer.java:55)
>       at 
> com.subshell.sophora.server.application.replication.Master.sendMessage(Master.java:117)
>       at 
> com.subshell.sophora.server.application.replication.Master.sendServerEvent(Master.java:79)
>       at 
> com.subshell.sophora.server.application.replication.ReplicationMaster.consumeEvent(ReplicationMaster.java:100)
>       at 
> com.subshell.sophora.server.application.manager.impl.ObservationManager.afterCompletion(ObservationManager.java:74)
>       at 
> org.springframework.transaction.support.TransactionSynchronizationUtils.invokeAfterCompletion(TransactionSynchronizationUtils.java:168)
>       at 
> org.springframework.transaction.support.AbstractPlatformTransactionManager.invokeAfterCompletion(AbstractPlatformTransactionManager.java:996)
>       at 
> org.springframework.transaction.support.AbstractPlatformTransactionManager.triggerAfterCompletion(AbstractPlatformTransactionManager.java:971)
>       at 
> org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:799)
>       at 
> org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723)
>       at 
> org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:393)
>       at 
> org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:120)
>       at 
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
>       at 
> org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:80)
>       at 
> com.subshell.sophora.commons.profile.Profiler.profile(Profiler.java:130)
>       at sun.reflect.GeneratedMethodAccessor24.invoke(Unknown Source)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>       at java.lang.reflect.Method.invoke(Method.java:597)
>       at 
> org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:621)
>       at 
> org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:610)
>       at 
> org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:65)
>       at 
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
>       at 
> org.springframework.aop.aspectj.AspectJAfterAdvice.invoke(AspectJAfterAdvice.java:42)
>       at 
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:161)
>       at 
> org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:50)
>       at 
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:161)
>       at 
> org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:90)
>       at 
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
>       at 
> org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
>       at $Proxy37.saveDocument(Unknown Source)
>       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.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
>       at 
> org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
>       at 
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
>       at 
> com.subshell.sophora.server.remoting.RemoteInvocationTraceInterceptor.invoke(RemoteInvocationTraceInterceptor.java:35)
>       at 
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
>       at 
> org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
>       at $Proxy40.saveDocument(Unknown Source)
>       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.remoting.support.RemoteInvocation.invoke(RemoteInvocation.java:205)
>       at 
> org.springframework.remoting.support.DefaultRemoteInvocationExecutor.invoke(DefaultRemoteInvocationExecutor.java:38)
>       at 
> org.springframework.remoting.support.RemoteInvocationBasedExporter.invoke(RemoteInvocationBasedExporter.java:78)
>       at 
> org.springframework.remoting.rmi.RmiBasedExporter.invoke(RmiBasedExporter.java:73)
>       at 
> org.springframework.remoting.rmi.RmiInvocationWrapper.invoke(RmiInvocationWrapper.java:72)
>       at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>       at java.lang.reflect.Method.invoke(Method.java:597)
>       at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305)
>       at sun.rmi.transport.Transport$1.run(Transport.java:159)
>       at java.security.AccessController.doPrivileged(Native Method)
>       at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
>       at 
> sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
>       at 
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
>       at 
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>       at java.lang.Thread.run(Thread.java:662)
> {noFormat}
> After same research it turned out, that Derby writes multiple gigabyte of 
> temporary files in its tmp directory during the select statement. Afterwards 
> these temporary files are deleted and rebuild when the next messages are 
> requested from the message store. The problem is the PreparedStatement that 
> is used for the select statement. When I changed the PreparedStatement to a 
> normal Statement the execution time got lower than 10ms. 
> In the attachment you can find a patch, how I fixed this issue. 
> Furthermore you can find a Test-Program (you can import it as a Maven-Eclipse 
> project) which reproduces this issue. 
> This program creates a derby database with a the activemq Message table and 
> fills it with data (2000 Messages, this can take several hours). I assumed 
> 3MB for one message as our messages contain same binary data and has an 
> average size of 3MB.
> After the database is built one time a Statement and one time a 
> PreparedStatment is used to retrieve the next messages.
> The Statement takes about 1 ms and the PreparedStatement about 258805 ms. 
> Also the second PreparedStatement takes as much time.
> Here are the temporary files created by derby during the select Statement:
> {noFormat}
> insgesamt 5,4G
>  287M 2011-12-23 09:48 T1324630116288.tmp
>  287M 2011-12-23 09:49 T1324630116289.tmp
>  287M 2011-12-23 09:49 T1324630116290.tmp
>  287M 2011-12-23 09:49 T1324630116291.tmp
>  287M 2011-12-23 09:49 T1324630116292.tmp
>  287M 2011-12-23 09:49 T1324630116293.tmp
>  287M 2011-12-23 09:50 T1324630116294.tmp
>  287M 2011-12-23 09:50 T1324630116295.tmp
>  287M 2011-12-23 09:50 T1324630116296.tmp
>  287M 2011-12-23 09:50 T1324630116297.tmp
>  287M 2011-12-23 09:51 T1324630116298.tmp
>  287M 2011-12-23 09:51 T1324630116299.tmp
>  287M 2011-12-23 09:51 T1324630116300.tmp
>  287M 2011-12-23 09:51 T1324630116301.tmp
>  287M 2011-12-23 09:51 T1324630116302.tmp
>  287M 2011-12-23 09:52 T1324630116303.tmp
>  287M 2011-12-23 09:52 T1324630116304.tmp
>  287M 2011-12-23 09:52 T1324630116305.tmp
>  284M 2011-12-23 09:52 T1324630116306.tmp
> {noFormat}
> The exeuction of a cleanup (DefaultJDBCAdapter.doDeleteOldMessages) also took 
> about 6 Minutes.
> But in this case I patched activemq not to do a cleanup at all, as our 
> messages don't expire.
> I'm almost sure that this issue can be observed in other methodes of the 
> DefaultJDBCAdapter. But for us it was sufficient to fix it in the recovering 
> of messages.

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