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Posted to users@servicemix.apache.org by goldi <go...@freenet.de> on 2007/06/05 16:22:05 UTC

Unable to choose a flow!

Hy everybody,

I have some trouble with JMS using JCA. My configuration is as follows:


<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:sm="http://servicemix.apache.org/config/1.0"
xmlns:audit="http://servicemix.apache.org/audit/1.0"
xmlns:jms="http://servicemix.apache.org/jms/1.0"
xmlns:preProzessor="http://servicemix.apache.org/preProzessor"
xmlns:ro="http://servicemix.apache.org/routing"
xmlns:amq="http://activemq.org/config/1.0"
xmlns:amqra="http://activemq.org/ra/1.0">
	<!-- System properties -->
	<sm:systemProperties>
		<property name="properties">
			<map>
				<entry key="java.security.auth.login.config">
					<bean class="org.springframework.util.ResourceUtils"
factory-method="getFile">
						<constructor-arg value="classpath:login.properties"/>
					</bean>
				</entry>
			</map>
		</property>
	</sm:systemProperties>
	<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
		<property name="location" value="classpath:servicemix.properties"/>
	</bean>
	<!-- Include other resources -->
	<import resource="classpath:security.xml"/>
	<import resource="classpath:jmx.xml"/>
	<import resource="classpath:activemq.xml"/>
	<import resource="classpath:tx.xml"/>
	<import resource="classpath:jndi.xml"/>
	<sm:container id="jbi" rootDir="./data/smx" MBeanServer="#jmxServer"
installationDirPath="./install" deploymentDirPath="./deploy"
monitorInterval="1" transactionManager="#transactionManager"
createJmxConnector="false" depends-on="jndi" persistent="true"
autoEnlistInTransaction="true" flowName="jca">
		<!-- Use a secured broker (see security.xml)  and define the 3 standard
flows -->
		<sm:broker>
			<sm:securedBroker authorizationMap="#authorizationMap">
				<sm:flows>
					<sm:sedaFlow/>
					<sm:jmsFlow jmsURL="${activemq.url}"/>
					<sm:jcaFlow connectionManager="#connectionManager"
jmsURL="${activemq.url}"/>
				</sm:flows>
			</sm:securedBroker>
		</sm:broker>
		<sm:services>
			<sm:statistics statsInterval="10" dumpStats="true"/>
		</sm:services>
		<!--executorFactory-->
		<sm:executorFactory>
			<bean class="org.apache.servicemix.executors.impl.ExecutorFactoryImpl">
				<property name="defaultConfig">
					<bean class="org.apache.servicemix.executors.impl.ExecutorConfig">
						<property name="corePoolSize" value="${servicemix.corePoolSize}"/>
						<property name="maximumPoolSize"
value="${servicemix.maximumPoolSize}"/>
						<property name="queueSize" value="${servicemix.queueSize}"/>
					</bean>
				</property>
			</bean>
		</sm:executorFactory>
		<sm:activationSpecs>
			<sm:activationSpec>
				<sm:component>
					<jms:component>
						<jms:endpoints>
							<jms:endpoint service="b:MyConsumerService" endpoint="synchronous"
targetService="preProzessor:receiver" role="consumer"
defaultMep="http://www.w3.org/2004/08/wsdl/in-only" processorName="jca"
connectionFactory="#activemqCF" resourceAdapter="#activemqRA"
bootstrapContext="#bootstrapContext" synchronous="true"
rollbackOnError="true">
								<jms:activationSpec>
									<amqra:activationSpec destination="queue.QueueToPreProzessor"
destinationType="javax.jms.Queue"/>
								</jms:activationSpec>
							</jms:endpoint>
							<jms:endpoint service="b:MyConsumerService2" endpoint="async"
targetService="ro:router" role="consumer"
defaultMep="http://www.w3.org/2004/08/wsdl/in-only" processorName="jca"
connectionFactory="#activemqCF" resourceAdapter="#activemqRA"
bootstrapContext="#bootstrapContext" synchronous="true"
rollbackOnError="true">
								<jms:activationSpec>
									<amqra:activationSpec destination="queue.QueueToRouter"
destinationType="javax.jms.Queue"/>
								</jms:activationSpec>
							</jms:endpoint>
						</jms:endpoints>
					</jms:component>
				</sm:component>
			</sm:activationSpec>
		</sm:activationSpecs>
	</sm:container>
	<sm:dotViewService container="#jbi" autoStart="false"/>
	<sm:logService container="#jbi" autoStart="true" refreshPeriod="60"/>
</beans>




I always get the following exception:

2007-06-05 16:06:35,843 ERROR - JcaConsumerProcessor           - Error while
handling jms message
javax.jbi.messaging.MessagingException: Unable to choose a flow for
exchange: InOnly[
  id: ID:Rep-A01-3609-1181052369875-4:0
  status: Active
  role: provider
  service: {http://servicemix.apache.org/preProzessor}receiver
  endpoint: receiver
  in: <?xml version="1.0" encoding="UTF-8"?><hello>World</hello>
]
        at
org.apache.servicemix.jbi.nmr.DefaultBroker.sendExchangePacket(DefaultBroker.java:279)
        at
org.apache.servicemix.jbi.security.SecuredBroker.sendExchangePacket(SecuredBroker.java:80)
        at
org.apache.servicemix.jbi.container.JBIContainer.sendExchange(JBIContainer.java:793)
        at
org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.doSend(DeliveryChannelImpl.java:381)
        at
org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.sendSync(DeliveryChannelImpl.java:456)
        at
org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.sendSync(DeliveryChannelImpl.java:428)
        at
org.apache.servicemix.jms.jca.JcaConsumerProcessor.onMessage(JcaConsumerProcessor.java:117)
        at org.jencks.XAEndpoint.onMessage(XAEndpoint.java:129)
        at
org.apache.activemq.ra.MessageEndpointProxy$MessageEndpointAlive.onMessage(MessageEndpointProxy.java:121)
        at
org.apache.activemq.ra.MessageEndpointProxy.onMessage(MessageEndpointProxy.java:61)
        at org.apache.activemq.ActiveMQSession.run(ActiveMQSession.java:696)
        at
org.apache.activemq.ra.ServerSessionImpl.run(ServerSessionImpl.java:165)
        at
org.apache.geronimo.connector.work.WorkerContext.run(WorkerContext.java:290)
        at
org.apache.geronimo.connector.work.pool.NamedRunnable.run(NamedRunnable.java:32)
        at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
        at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
        at java.lang.Thread.run(Thread.java:595)

Can someone help?

Greets Goldi
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Re: Unable to choose a flow!

Posted by goldi <go...@freenet.de>.
I set persistence="false" on the jbi container. It was a solution to this
problem,but not a good solution for me.Because I would loose messages in
this case. And in my use-case their should no message be lost.One of one
million would be acceptable. So I now set persistence="true" and just allow
the jca-flow,this should give me the best solution to this use-case, I
think. Looking at the table at this site
http://incubator.apache.org/servicemix/transactions.html I found out that
jca-flow can just use asynchronous with persistent and not synchronous with
persistence.And in my config the jms component tries to send synchronous
while persistence is true. But if I set synchronous="false" the
jms-component does not receive any message. 

bsnyder wrote:
> 
> On 6/15/07, goldi <go...@freenet.de> wrote:
>>
>> Found reason for first problem. This just occurs when I'm using
>> persistence="true". Using persistence="false" I don't get the exception.
>> A
>> little bit strange I think.
> 
> Where did you set persistence=false?
> 
> Bruce
> -- 
> perl -e 'print
> unpack("u30","D0G)U8V4\@4VYY9&5R\"F)R=6-E+G-N>61E<D\!G;6%I;\"YC;VT*"
> );'
> 
> Apache Geronimo - http://geronimo.apache.org/
> Apache ActiveMQ - http://activemq.org/
> Apache ServiceMix - http://servicemix.org/
> Castor - http://castor.org/
> 
> 

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Re: Unable to choose a flow!

Posted by Bruce Snyder <br...@gmail.com>.
On 6/15/07, goldi <go...@freenet.de> wrote:
>
> Found reason for first problem. This just occurs when I'm using
> persistence="true". Using persistence="false" I don't get the exception. A
> little bit strange I think.

Where did you set persistence=false?

Bruce
-- 
perl -e 'print unpack("u30","D0G)U8V4\@4VYY9&5R\"F)R=6-E+G-N>61E<D\!G;6%I;\"YC;VT*"
);'

Apache Geronimo - http://geronimo.apache.org/
Apache ActiveMQ - http://activemq.org/
Apache ServiceMix - http://servicemix.org/
Castor - http://castor.org/

Re: Unable to choose a flow!

Posted by goldi <go...@freenet.de>.
Found reason for first problem. This just occurs when I'm using
persistence="true". Using persistence="false" I don't get the exception. A
little bit strange I think.

goldi wrote:
> 
> Another problem that occurs with this component is, that the properties of
> the JMS message are lost. They seem not to be copied to the
> MessageExchange.
> 
> Greets Goldi
> 
> goldi wrote:
>> 
>> Hy everybody,
>> 
>> I have some trouble with JMS using JCA. My configuration is as follows:
>> 
>> 
>> <?xml version="1.0" encoding="UTF-8"?>
>> <beans xmlns:sm="http://servicemix.apache.org/config/1.0"
>> xmlns:audit="http://servicemix.apache.org/audit/1.0"
>> xmlns:jms="http://servicemix.apache.org/jms/1.0"
>> xmlns:preProzessor="http://servicemix.apache.org/preProzessor"
>> xmlns:ro="http://servicemix.apache.org/routing"
>> xmlns:amq="http://activemq.org/config/1.0"
>> xmlns:amqra="http://activemq.org/ra/1.0">
>> 	<!-- System properties -->
>> 	<sm:systemProperties>
>> 		<property name="properties">
>> 			<map>
>> 				<entry key="java.security.auth.login.config">
>> 					<bean class="org.springframework.util.ResourceUtils"
>> factory-method="getFile">
>> 						<constructor-arg value="classpath:login.properties"/>
>> 					</bean>
>> 				</entry>
>> 			</map>
>> 		</property>
>> 	</sm:systemProperties>
>> 	<bean id="propertyConfigurer"
>> class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
>> 		<property name="location" value="classpath:servicemix.properties"/>
>> 	</bean>
>> 	<!-- Include other resources -->
>> 	<import resource="classpath:security.xml"/>
>> 	<import resource="classpath:jmx.xml"/>
>> 	<import resource="classpath:activemq.xml"/>
>> 	<import resource="classpath:tx.xml"/>
>> 	<import resource="classpath:jndi.xml"/>
>> 	<sm:container id="jbi" rootDir="./data/smx" MBeanServer="#jmxServer"
>> installationDirPath="./install" deploymentDirPath="./deploy"
>> monitorInterval="1" transactionManager="#transactionManager"
>> createJmxConnector="false" depends-on="jndi" persistent="true"
>> autoEnlistInTransaction="true" flowName="jca">
>> 		<!-- Use a secured broker (see security.xml)  and define the 3 standard
>> flows -->
>> 		<sm:broker>
>> 			<sm:securedBroker authorizationMap="#authorizationMap">
>> 				<sm:flows>
>> 					<sm:sedaFlow/>
>> 					<sm:jmsFlow jmsURL="${activemq.url}"/>
>> 					<sm:jcaFlow connectionManager="#connectionManager"
>> jmsURL="${activemq.url}"/>
>> 				</sm:flows>
>> 			</sm:securedBroker>
>> 		</sm:broker>
>> 		<sm:services>
>> 			<sm:statistics statsInterval="10" dumpStats="true"/>
>> 		</sm:services>
>> 		<!--executorFactory-->
>> 		<sm:executorFactory>
>> 			<bean
>> class="org.apache.servicemix.executors.impl.ExecutorFactoryImpl">
>> 				<property name="defaultConfig">
>> 					<bean class="org.apache.servicemix.executors.impl.ExecutorConfig">
>> 						<property name="corePoolSize" value="${servicemix.corePoolSize}"/>
>> 						<property name="maximumPoolSize"
>> value="${servicemix.maximumPoolSize}"/>
>> 						<property name="queueSize" value="${servicemix.queueSize}"/>
>> 					</bean>
>> 				</property>
>> 			</bean>
>> 		</sm:executorFactory>
>> 		<sm:activationSpecs>
>> 			<sm:activationSpec>
>> 				<sm:component>
>> 					<jms:component>
>> 						<jms:endpoints>
>> 							<jms:endpoint service="b:MyConsumerService" endpoint="synchronous"
>> targetService="preProzessor:receiver" role="consumer"
>> defaultMep="http://www.w3.org/2004/08/wsdl/in-only" processorName="jca"
>> connectionFactory="#activemqCF" resourceAdapter="#activemqRA"
>> bootstrapContext="#bootstrapContext" synchronous="true"
>> rollbackOnError="true">
>> 								<jms:activationSpec>
>> 									<amqra:activationSpec destination="queue.QueueToPreProzessor"
>> destinationType="javax.jms.Queue"/>
>> 								</jms:activationSpec>
>> 							</jms:endpoint>
>> 							<jms:endpoint service="b:MyConsumerService2" endpoint="async"
>> targetService="ro:router" role="consumer"
>> defaultMep="http://www.w3.org/2004/08/wsdl/in-only" processorName="jca"
>> connectionFactory="#activemqCF" resourceAdapter="#activemqRA"
>> bootstrapContext="#bootstrapContext" synchronous="true"
>> rollbackOnError="true">
>> 								<jms:activationSpec>
>> 									<amqra:activationSpec destination="queue.QueueToRouter"
>> destinationType="javax.jms.Queue"/>
>> 								</jms:activationSpec>
>> 							</jms:endpoint>
>> 						</jms:endpoints>
>> 					</jms:component>
>> 				</sm:component>
>> 			</sm:activationSpec>
>> 		</sm:activationSpecs>
>> 	</sm:container>
>> 	<sm:dotViewService container="#jbi" autoStart="false"/>
>> 	<sm:logService container="#jbi" autoStart="true" refreshPeriod="60"/>
>> </beans>
>> 
>> 
>> 
>> 
>> I always get the following exception:
>> 
>> 2007-06-05 16:06:35,843 ERROR - JcaConsumerProcessor           - Error
>> while handling jms message
>> javax.jbi.messaging.MessagingException: Unable to choose a flow for
>> exchange: InOnly[
>>   id: ID:Rep-A01-3609-1181052369875-4:0
>>   status: Active
>>   role: provider
>>   service: {http://servicemix.apache.org/preProzessor}receiver
>>   endpoint: receiver
>>   in: <?xml version="1.0" encoding="UTF-8"?><hello>World</hello>
>> ]
>>         at
>> org.apache.servicemix.jbi.nmr.DefaultBroker.sendExchangePacket(DefaultBroker.java:279)
>>         at
>> org.apache.servicemix.jbi.security.SecuredBroker.sendExchangePacket(SecuredBroker.java:80)
>>         at
>> org.apache.servicemix.jbi.container.JBIContainer.sendExchange(JBIContainer.java:793)
>>         at
>> org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.doSend(DeliveryChannelImpl.java:381)
>>         at
>> org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.sendSync(DeliveryChannelImpl.java:456)
>>         at
>> org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.sendSync(DeliveryChannelImpl.java:428)
>>         at
>> org.apache.servicemix.jms.jca.JcaConsumerProcessor.onMessage(JcaConsumerProcessor.java:117)
>>         at org.jencks.XAEndpoint.onMessage(XAEndpoint.java:129)
>>         at
>> org.apache.activemq.ra.MessageEndpointProxy$MessageEndpointAlive.onMessage(MessageEndpointProxy.java:121)
>>         at
>> org.apache.activemq.ra.MessageEndpointProxy.onMessage(MessageEndpointProxy.java:61)
>>         at
>> org.apache.activemq.ActiveMQSession.run(ActiveMQSession.java:696)
>>         at
>> org.apache.activemq.ra.ServerSessionImpl.run(ServerSessionImpl.java:165)
>>         at
>> org.apache.geronimo.connector.work.WorkerContext.run(WorkerContext.java:290)
>>         at
>> org.apache.geronimo.connector.work.pool.NamedRunnable.run(NamedRunnable.java:32)
>>         at
>> edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
>>         at
>> edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
>>         at java.lang.Thread.run(Thread.java:595)
>> 
>> Can someone help?
>> 
>> Greets Goldi
>> 
> 
> 

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Re: Unable to choose a flow!

Posted by goldi <go...@freenet.de>.
Another problem that occurs with this component is, that the properties of
the JMS message are lost. They seem not to be copied to the MessageExchange.

Greets Goldi

goldi wrote:
> 
> Hy everybody,
> 
> I have some trouble with JMS using JCA. My configuration is as follows:
> 
> 
> <?xml version="1.0" encoding="UTF-8"?>
> <beans xmlns:sm="http://servicemix.apache.org/config/1.0"
> xmlns:audit="http://servicemix.apache.org/audit/1.0"
> xmlns:jms="http://servicemix.apache.org/jms/1.0"
> xmlns:preProzessor="http://servicemix.apache.org/preProzessor"
> xmlns:ro="http://servicemix.apache.org/routing"
> xmlns:amq="http://activemq.org/config/1.0"
> xmlns:amqra="http://activemq.org/ra/1.0">
> 	<!-- System properties -->
> 	<sm:systemProperties>
> 		<property name="properties">
> 			<map>
> 				<entry key="java.security.auth.login.config">
> 					<bean class="org.springframework.util.ResourceUtils"
> factory-method="getFile">
> 						<constructor-arg value="classpath:login.properties"/>
> 					</bean>
> 				</entry>
> 			</map>
> 		</property>
> 	</sm:systemProperties>
> 	<bean id="propertyConfigurer"
> class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
> 		<property name="location" value="classpath:servicemix.properties"/>
> 	</bean>
> 	<!-- Include other resources -->
> 	<import resource="classpath:security.xml"/>
> 	<import resource="classpath:jmx.xml"/>
> 	<import resource="classpath:activemq.xml"/>
> 	<import resource="classpath:tx.xml"/>
> 	<import resource="classpath:jndi.xml"/>
> 	<sm:container id="jbi" rootDir="./data/smx" MBeanServer="#jmxServer"
> installationDirPath="./install" deploymentDirPath="./deploy"
> monitorInterval="1" transactionManager="#transactionManager"
> createJmxConnector="false" depends-on="jndi" persistent="true"
> autoEnlistInTransaction="true" flowName="jca">
> 		<!-- Use a secured broker (see security.xml)  and define the 3 standard
> flows -->
> 		<sm:broker>
> 			<sm:securedBroker authorizationMap="#authorizationMap">
> 				<sm:flows>
> 					<sm:sedaFlow/>
> 					<sm:jmsFlow jmsURL="${activemq.url}"/>
> 					<sm:jcaFlow connectionManager="#connectionManager"
> jmsURL="${activemq.url}"/>
> 				</sm:flows>
> 			</sm:securedBroker>
> 		</sm:broker>
> 		<sm:services>
> 			<sm:statistics statsInterval="10" dumpStats="true"/>
> 		</sm:services>
> 		<!--executorFactory-->
> 		<sm:executorFactory>
> 			<bean class="org.apache.servicemix.executors.impl.ExecutorFactoryImpl">
> 				<property name="defaultConfig">
> 					<bean class="org.apache.servicemix.executors.impl.ExecutorConfig">
> 						<property name="corePoolSize" value="${servicemix.corePoolSize}"/>
> 						<property name="maximumPoolSize"
> value="${servicemix.maximumPoolSize}"/>
> 						<property name="queueSize" value="${servicemix.queueSize}"/>
> 					</bean>
> 				</property>
> 			</bean>
> 		</sm:executorFactory>
> 		<sm:activationSpecs>
> 			<sm:activationSpec>
> 				<sm:component>
> 					<jms:component>
> 						<jms:endpoints>
> 							<jms:endpoint service="b:MyConsumerService" endpoint="synchronous"
> targetService="preProzessor:receiver" role="consumer"
> defaultMep="http://www.w3.org/2004/08/wsdl/in-only" processorName="jca"
> connectionFactory="#activemqCF" resourceAdapter="#activemqRA"
> bootstrapContext="#bootstrapContext" synchronous="true"
> rollbackOnError="true">
> 								<jms:activationSpec>
> 									<amqra:activationSpec destination="queue.QueueToPreProzessor"
> destinationType="javax.jms.Queue"/>
> 								</jms:activationSpec>
> 							</jms:endpoint>
> 							<jms:endpoint service="b:MyConsumerService2" endpoint="async"
> targetService="ro:router" role="consumer"
> defaultMep="http://www.w3.org/2004/08/wsdl/in-only" processorName="jca"
> connectionFactory="#activemqCF" resourceAdapter="#activemqRA"
> bootstrapContext="#bootstrapContext" synchronous="true"
> rollbackOnError="true">
> 								<jms:activationSpec>
> 									<amqra:activationSpec destination="queue.QueueToRouter"
> destinationType="javax.jms.Queue"/>
> 								</jms:activationSpec>
> 							</jms:endpoint>
> 						</jms:endpoints>
> 					</jms:component>
> 				</sm:component>
> 			</sm:activationSpec>
> 		</sm:activationSpecs>
> 	</sm:container>
> 	<sm:dotViewService container="#jbi" autoStart="false"/>
> 	<sm:logService container="#jbi" autoStart="true" refreshPeriod="60"/>
> </beans>
> 
> 
> 
> 
> I always get the following exception:
> 
> 2007-06-05 16:06:35,843 ERROR - JcaConsumerProcessor           - Error
> while handling jms message
> javax.jbi.messaging.MessagingException: Unable to choose a flow for
> exchange: InOnly[
>   id: ID:Rep-A01-3609-1181052369875-4:0
>   status: Active
>   role: provider
>   service: {http://servicemix.apache.org/preProzessor}receiver
>   endpoint: receiver
>   in: <?xml version="1.0" encoding="UTF-8"?><hello>World</hello>
> ]
>         at
> org.apache.servicemix.jbi.nmr.DefaultBroker.sendExchangePacket(DefaultBroker.java:279)
>         at
> org.apache.servicemix.jbi.security.SecuredBroker.sendExchangePacket(SecuredBroker.java:80)
>         at
> org.apache.servicemix.jbi.container.JBIContainer.sendExchange(JBIContainer.java:793)
>         at
> org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.doSend(DeliveryChannelImpl.java:381)
>         at
> org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.sendSync(DeliveryChannelImpl.java:456)
>         at
> org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.sendSync(DeliveryChannelImpl.java:428)
>         at
> org.apache.servicemix.jms.jca.JcaConsumerProcessor.onMessage(JcaConsumerProcessor.java:117)
>         at org.jencks.XAEndpoint.onMessage(XAEndpoint.java:129)
>         at
> org.apache.activemq.ra.MessageEndpointProxy$MessageEndpointAlive.onMessage(MessageEndpointProxy.java:121)
>         at
> org.apache.activemq.ra.MessageEndpointProxy.onMessage(MessageEndpointProxy.java:61)
>         at
> org.apache.activemq.ActiveMQSession.run(ActiveMQSession.java:696)
>         at
> org.apache.activemq.ra.ServerSessionImpl.run(ServerSessionImpl.java:165)
>         at
> org.apache.geronimo.connector.work.WorkerContext.run(WorkerContext.java:290)
>         at
> org.apache.geronimo.connector.work.pool.NamedRunnable.run(NamedRunnable.java:32)
>         at
> edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
>         at
> edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
>         at java.lang.Thread.run(Thread.java:595)
> 
> Can someone help?
> 
> Greets Goldi
> 

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