Hi Guys,
In order to test the concurrency in my system, I created a Threaded standalone
application and tried to invoke a Stateless Session Bean concurrently 100 times.
What the Session Bean does is fairly simple, It calls an entiry bean which in turn
searches for the primary key in the database. If there is'nt one, it creates a new
record.
When I executed my threaded applicatoin, I got the following Exception stack trace.
Can somebody explain be about this 'No ManagedConnections Available!'. Am I missing
something in the way I have configured my datasource.
My datasource configuration is :
<datasources>
<local-tx-datasource>
<jndi-name>OracleDS</jndi-name>
<connection-url>jdbc:oracle:thin:@193.16.18.142:1521:testdb</connection-url>
<driver-class>oracle.jdbc.driver.OracleDriver</driver-class>
<user-name>dev</user-name>
<password>dev</password>
<exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.OracleExceptionSorter</exception-sorter-class-name>
</local-tx-datasource>
</datasources>
Environment: jboss-3.2.1_tomcat-4.1.24, Oracle 8.1.6, Jdk 1.4.1_01
Thanx in advance,
Magesh
EXCEPTION STACK:
org.jboss.util.NestedSQLException: No ManagedConnections Available!; - nested
throwable: (javax.resource.ResourceException: No ManagedConnections Available!)
at
org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:106)
at
com.pindartech.imageprocessing.manager.requestpersistencemanager.RequestBean.getConnection(RequestBean.java:690)
at
com.pindartech.imageprocessing.manager.requestpersistencemanager.RequestBean.ejbFindByPrimaryKey(RequestBean.java:460)
at sun.reflect.GeneratedMethodAccessor521.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at
org.jboss.ejb.plugins.BMPPersistenceManager.callFinderMethod(BMPPersistenceManager.java:578)
at
org.jboss.ejb.plugins.BMPPersistenceManager.findEntity(BMPPersistenceManager.java:316)
at
org.jboss.resource.connectionmanager.CachedConnectionInterceptor.findEntity(CachedConnectionInterceptor.java:301)
at org.jboss.ejb.EntityContainer.findLocal(EntityContainer.java:627)
at sun.reflect.GeneratedMethodAccessor520.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at
org.jboss.ejb.EntityContainer$ContainerInterceptor.invokeHome(EntityContainer.java:998)
at
org.jboss.ejb.plugins.EntitySynchronizationInterceptor.invokeHome(EntitySynchronizationInterceptor.java:188)
at
org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invokeHome(CachedConnectionInterceptor.java:215)
at
org.jboss.ejb.plugins.AbstractInterceptor.invokeHome(AbstractInterceptor.java:88)
at
org.jboss.ejb.plugins.EntityInstanceInterceptor.invokeHome(EntityInstanceInterceptor.java:91)
at
org.jboss.ejb.plugins.EntityLockInterceptor.invokeHome(EntityLockInterceptor.java:61)
at
org.jboss.ejb.plugins.EntityCreationInterceptor.invokeHome(EntityCreationInterceptor.java:28)
at
org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:88)
at
org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:243)
at org.jboss.ejb.plugins.TxInterceptorCMT.invokeHome(TxInterceptorCMT.java:74)
at
org.jboss.ejb.plugins.SecurityInterceptor.invokeHome(SecurityInterceptor.java:92)
at org.jboss.ejb.plugins.LogInterceptor.invokeHome(LogInterceptor.java:120)
at
org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invokeHome(ProxyFactoryFinderInterceptor.java:93)
at org.jboss.ejb.EntityContainer.internalInvokeHome(EntityContainer.java:477)
at org.jboss.ejb.Container.invoke(Container.java:694)
at
org.jboss.ejb.plugins.local.BaseLocalProxyFactory.invokeHome(BaseLocalProxyFactory.java:272)
at org.jboss.ejb.plugins.local.LocalHomeProxy.invoke(LocalHomeProxy.java:110)
at $Proxy263.findByPrimaryKey(Unknown Source)
at
com.pindartech.imageprocessing.manager.requestpersistencemanager.RequestDBManager.findRequestByRequestID(RequestDBManager.java:53)
at
com.pindartech.imageprocessing.manager.requestpersistencemanager.RequestPersistenceManagerBean.findRequestByRequestID(RequestPersistenceManagerBean.java:98)
at sun.reflect.GeneratedMethodAccessor544.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at
org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionContainer.java:629)
at
org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:186)
at
org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceInterceptor.java:72)
at
org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:84)
at
org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:243)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:104)
at
org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:117)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:191)
at
org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:122)
at
org.jboss.ejb.StatelessSessionContainer.internalInvoke(StatelessSessionContainer.java:322)
at org.jboss.ejb.Container.invoke(Container.java:674)
at
org.jboss.ejb.plugins.local.BaseLocalProxyFactory.invoke(BaseLocalProxyFactory.java:353)
at
org.jboss.ejb.plugins.local.StatelessSessionProxy.invoke(StatelessSessionProxy.java:83)
at $Proxy295.findRequestByRequestID(Unknown Source)
at
com.pindartech.imageprocessing.manager.requestcontroller.RequestControllerBean.findRequestByRequestID(RequestControllerBean.java:387)
at
com.pindartech.imageprocessing.manager.requestcontroller.RequestControllerBean.processRequest(RequestControllerBean.java:67)
at sun.reflect.GeneratedMethodAccessor542.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at
org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionContainer.java:629)
at
org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:186)
at
org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceInterceptor.java:72)
at
org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:84)
at
org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:243)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:104)
at
org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:117)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:191)
at
org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:122)
at
org.jboss.ejb.StatelessSessionContainer.internalInvoke(StatelessSessionContainer.java:322)
at org.jboss.ejb.Container.invoke(Container.java:674)
at
org.jboss.ejb.plugins.local.BaseLocalProxyFactory.invoke(BaseLocalProxyFactory.java:353)
at
org.jboss.ejb.plugins.local.StatelessSessionProxy.invoke(StatelessSessionProxy.java:83)
at $Proxy294.processRequest(Unknown Source)
at
com.pindartech.imageprocessing.manager.requestreceiver.RequestReceiverBean.received(RequestReceiverBean.java:110)
at sun.reflect.GeneratedMethodAccessor526.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at
org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionContainer.java:629)
at
org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:186)
at
org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceInterceptor.java:72)
at
org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:84)
at
org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:296)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:104)
at
org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:117)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:191)
at
org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:122)
at
org.jboss.ejb.StatelessSessionContainer.internalInvoke(StatelessSessionContainer.java:322)
at org.jboss.ejb.Container.invoke(Container.java:674)
at sun.reflect.GeneratedMethodAccessor480.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at
org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:549)
at org.jboss.invocation.jrmp.server.JRMPInvoker.invoke(JRMPInvoker.java:359)
at sun.reflect.GeneratedMethodAccessor112.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:261)
at sun.rmi.transport.Transport$1.run(Transport.java:148)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:144)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
at
sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)
at java.lang.Thread.run(Thread.java:536)
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