Question:

We are running 20 concurent Java threads using jdk 1.5 concurency package running WL 9.1 using ORACLE data source pooling. We are getting threads that never end but are active. They seem to be blocking each other trying to use WeakHashMaps. See below thread trace.

Any ideas/suggestions on what we are doing wrong????

Hibernate version:
3.2.4.SP1

Full stack trace of any exception that occurs:

"pool-1-thread-18" id=262 idx=0x80 tid=8334 prio=5 alive
at java/util/WeakHashMap.transfer([Ljava/util/WeakHashMap$Entry;[Ljava/util/WeakHashMap$Entry;)V(WeakHashMap.java:468)
at java/util/WeakHashMap.resize(I)V(WeakHashMap.java:437)
at java/util/WeakHashMap.put(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;(WeakHashMap.java:410)[inlined]
at jrockit/reflect/InvocationCompiler.put(Ljava/lang/reflect/AccessibleObject;Ljrockit/reflect/CompiledCode;)V(Unknown Source)[inlined]
at jrockit/reflect/InvocationCompiler.codeFor(Ljava/lang/reflect/AccessibleObject;Ljava/lang/Class;)Ljrockit/reflect/CompiledCode;(Unknown Source)[inlined]
at jrockit/reflect/InvocationCompiler.compileInvoker(Ljava/lang/reflect/Method;)Ljrockit/reflect/MethodInvoker;(Unknown Source)[inlined]
at jrockit/reflect/MethodInvoker.compileInvoker()Ljrockit/reflect/MethodInvoker;(Unknown Source)[inlined]
at jrockit/reflect/NativeMethodInvoker.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;(Unknown Source)[optimized]
at jrockit/reflect/VirtualNativeMethodInvoker.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;(Unknown Source)
at java/lang/reflect/Method.invoke(Ljava/lang/Object;[Ljava/lang/Object;I)Ljava/lang/Object;(Unknown Source)[inlined]
at org/hibernate/property/BasicPropertyAccessor$BasicSetter.set(Ljava/lang/Object;Ljava/lang/Object;Lorg/hibernate/engine/SessionFactoryImplementor;)V(BasicPropertyAccessor.java:74)[optimized]
at org/hibernate/tuple/component/AbstractComponentTuplizer.setPropertyValues(Ljava/lang/Object;[Ljava/lang/Object;)V(AbstractComponentTuplizer.java:81)
at org/hibernate/tuple/component/PojoComponentTuplizer.setPropertyValues(Ljava/lang/Object;[Ljava/lang/Object;)V(PojoComponentTuplizer.java:92)
at org/hibernate/type/ComponentType.setPropertyValues(Ljava/lang/Object;[Ljava/lang/Object;Lorg/hibernate/EntityMode;)V(ComponentType.java:358)
at org/hibernate/type/ComponentType.resolve(Ljava/lang/Object;Lorg/hibernate/engine/SessionImplementor;Ljava/lang/Object;)Ljava/lang/Object;(ComponentType.java:586)
at org/hibernate/engine/TwoPhaseLoad.initializeEntity(Ljava/lang/Object;ZLorg/hibernate/engine/SessionImplementor;Lorg/hibernate/event/PreLoadEvent;Lorg/hibernate/event/PostLoadEvent;)V(TwoPhaseLoad.java:116)[optimized]
at org/hibernate/loader/Loader.initializeEntitiesAndCollections(Ljava/util/List;Ljava/lang/Object;Lorg/hibernate/engine/SessionImplementor;Z)V(Loader.java:854)[optimized]
at org/hibernate/loader/Loader.doQuery(Lorg/hibernate/engine/SessionImplementor;Lorg/hibernate/engine/QueryParameters;Z)Ljava/util/List;(Loader.java:729)[inlined]
at org/hibernate/loader/Loader.doQueryAndInitializeNonLazyCollections(Lorg/hibernate/engine/SessionImplementor;Lorg/hibernate/engine/QueryParameters;Z)Ljava/util/List;(Loader.java:236)[inlined]
at org/hibernate/loader/Loader.loadEntity(Lorg/hibernate/engine/SessionImplementor;Ljava/lang/Object;Lorg/hibernate/type/Type;Ljava/lang/Object;Ljava/lang/String;Ljava/io/Serializable;Lorg/hibernate/persister/entity/EntityPersister;)Ljava/util/List;(Loader.java:1885)[optimized]
at org/hibernate/loader/entity/AbstractEntityLoader.load(Lorg/hibernate/engine/SessionImplementor;Ljava/lang/Object;Ljava/lang/Object;Ljava/io/Serializable;)Ljava/lang/Object;(AbstractEntityLoader.java:48)
at org/hibernate/loader/entity/AbstractEntityLoader.load(Ljava/io/Serializable;Ljava/lang/Object;Lorg/hibernate/engine/SessionImplementor;)Ljava/lang/Object;(AbstractEntityLoader.java:42)
at org/hibernate/persister/entity/AbstractEntityPersister.load(Ljava/io/Serializable;Ljava/lang/Object;Lorg/hibernate/LockMode;Lorg/hibernate/engine/SessionImplementor;)Ljava/lang/Object;(AbstractEntityPersister.java:3044)[optimized]
at org/hibernate/event/def/DefaultLoadEventListener.loadFromDatasource(Lorg/hibernate/event/LoadEvent;Lorg/hibernate/persister/entity/EntityPersister;Lorg/hibernate/engine/EntityKey;Lorg/hibernate/event/LoadEventListener$LoadType;)Ljava/lang/Object;(DefaultLoadEventListener.java:395)[inlined]
at org/hibernate/event/def/DefaultLoadEventListener.doLoad(Lorg/hibernate/event/LoadEvent;Lorg/hibernate/persister/entity/EntityPersister;Lorg/hibernate/engine/EntityKey;Lorg/hibernate/event/LoadEventListener$LoadType;)Ljava/lang/Object;(DefaultLoadEventListener.java:332)[optimized]
at org/hibernate/event/def/DefaultLoadEventListener.load(Lorg/hibernate/event/LoadEvent;Lorg/hibernate/persister/entity/EntityPersister;Lorg/hibernate/engine/EntityKey;Lorg/hibernate/event/LoadEventListener$LoadType;)Ljava/lang/Object;(DefaultLoadEventListener.java:139)[inlined]
at org/hibernate/event/def/DefaultLoadEventListener.onLoad(Lorg/hibernate/event/LoadEvent;Lorg/hibernate/event/LoadEventListener$LoadType;)V(DefaultLoadEventListener.java:78)[optimized]
at org/hibernate/impl/SessionImpl.fireLoad(Lorg/hibernate/event/LoadEvent;Lorg/hibernate/event/LoadEventListener$LoadType;)V(SessionImpl.java:878)[optimized]
at org/hibernate/impl/SessionImpl.immediateLoad(Ljava/lang/String;Ljava/io/Serializable;)Ljava/lang/Object;(SessionImpl.java:836)
at org/hibernate/proxy/AbstractLazyInitializer.initialize()V(AbstractLazyInitializer.java:66)
at org/hibernate/proxy/AbstractLazyInitializer.getImplementation()Ljava/lang/Object;(AbstractLazyInitializer.java:111)[inlined]
at org/hibernate/proxy/pojo/cglib/CGLIBLazyInitializer.invoke(Ljava/lang/Object;Ljava/lang/reflect/Method;[Ljava/lang/Object;)Ljava/lang/Object;(CGLIBLazyInitializer.java:147)[optimized]
at com/fanniemae/customersolutions/ess/modelobject/LoanReconciliation$$EnhancerByCGLIB$$2c97c342.getFannieMaeLoan()Lcom/fanniemae/customersolutions/ess/modelobject/FannieMaeLoan;(Unknown Source)
at jrockit/vm/RNI.c2java(IIII)V(Native Method)
at jrockit/reflect/NativeMethodInvoker.invoke0(Ljava/lang/Object;ILjava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;(Native Method)
at jrockit/reflect/NativeMethodInvoker.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;(Unknown Source)[optimized]
at jrockit/reflect/VirtualNativeMethodInvoker.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;(Unknown Source)
at java/lang/reflect/Method.invoke(Ljava/lang/Object;[Ljava/lang/Object;I)Ljava/lang/Object;(Unknown Source)[optimized]
at com/fanniemae/ai/ac/utility/reflection/ReflectionSupport.execute(Ljava/lang/Object;Ljava/lang/reflect/Method;)Ljava/lang/Object;(ReflectionSupport.java:64)
at com/fanniemae/ai/ac/utility/reflection/ReflectionSupport.executeGetMethod(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;(ReflectionSupport.java:102)
at com/fanniemae/customersolutions/ess/grouping/impl/SuperLoanNaturalKeyBuilder.rawValue(Ljava/lang/String;Lcom/fanniemae/customersolutions/ess/modelobject/LoanToPseudopool;)Ljava/lang/Object;(SuperLoanNaturalKeyBuilder.java:89)
at com/fanniemae/customersolutions/ess/grouping/impl/SuperLoanNaturalKeyBuilder.value(Lcom/fanniemae/customersolutions/ess/castor/grouping/Criteria;Lcom/fanniemae/customersolutions/ess/modelobject/LoanToPseudopool;)Ljava/lang/Object;(SuperLoanNaturalKeyBuilder.java:61)
at com/fanniemae/customersolutions/ess/grouping/impl/SuperLoanNaturalKeyBuilder.buildNaturalKey(Lcom/fanniemae/customersolutions/ess/modelobject/LoanToPseudopool;)Ljava/util/Map;(SuperLoanNaturalKeyBuilder.java:41)
at com/fanniemae/customersolutions/ess/grouping/impl/GroupingManager.group(Ljava/lang/Long;)Lcom/fanniemae/customersolutions/ess/modelobject/SuperLoan;(GroupingManager.java:46)
at jrockit/vm/RNI.c2java(IIII)V(Native Method)
at jrockit/reflect/NativeMethodInvoker.invoke0(Ljava/lang/Object;ILjava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;(Native Method)
at jrockit/reflect/NativeMethodInvoker.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;(Unknown Source)[optimized]
at jrockit/reflect/VirtualNativeMethodInvoker.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;(Unknown Source)
at java/lang/reflect/Method.invoke(Ljava/lang/Object;[Ljava/lang/Object;I)Ljava/lang/Object;(Unknown Source)[inlined]
at org/springframework/aop/support/AopUtils.invokeJoinpointUsingReflection(Ljava/lang/Object;Ljava/lang/reflect/Method;[Ljava/lang/Object;)Ljava/lang/Object;(AopUtils.java:281)[inlined]
at org/springframework/aop/framework/ReflectiveMethodInvocation.invokeJoinpoint()Ljava/lang/Object;(ReflectiveMethodInvocation.java:187)[inlined]
at org/springframework/aop/framework/ReflectiveMethodInvocation.proceed()Ljava/lang/Object;(ReflectiveMethodInvocation.java:176)[optimized]
at org/springframework/transaction/interceptor/TransactionInterceptor.invoke(Lorg/aopalliance/intercept/MethodInvocation;)Ljava/lang/Object;(TransactionInterceptor.java:107)[optimized]
at org/springframework/aop/framework/ReflectiveMethodInvocation.proceed()Ljava/lang/Object;(ReflectiveMethodInvocation.java:176)[optimized]
at org/springframework/aop/framework/JdkDynamicAopProxy.invoke(Ljava/lang/Object;Ljava/lang/reflect/Method;[Ljava/lang/Object;)Ljava/lang/Object;(JdkDynamicAopProxy.java:210)[optimized]
at $Proxy42.group(Ljava/lang/Long;)Lcom/fanniemae/customersolutions/ess/modelobject/SuperLoan;(Unknown Source)
at com/fanniemae/customersolutions/ess/grouping/impl/LoanToPseudopoolResultSetParsingProcess.process(Ljava/lang/Object;)Lcom/fanniemae/ai/ac/parsingprocess/Status;(LoanToPseudopoolResultSetParsingProcess.java:31)
at com/fanniemae/ai/ac/parsingprocess/ResultSetParsingProcess.execute()Lcom/fanniemae/ai/ac/parsingprocess/Status;(ResultSetParsingProcess.java:91)[optimized]
at com/fanniemae/customersolutions/ess/workflow/deal/actions/SuperLoanChunkProcessor.process(Lcom/fanniemae/ai/ac/parsingprocess/parallel/ChunkMessage;)V(SuperLoanChunkProcessor.java:51)
at com/fanniemae/ai/ac/parsingprocess/parallel/ChunkCommand.perform(Lcom/fanniemae/ai/ac/async/AsyncMessageObject;)Lcom/fanniemae/ai/ac/async/AsyncResults;(ChunkCommand.java:38)
at com/fanniemae/ai/ac/async/AsyncCommand.process()V(AsyncCommand.java:72)
at com/fanniemae/ai/ac/async/threads/AsyncRunnable.run()V(AsyncRunnable.java:29)
at java/util/concurrent/Executors$RunnableAdapter.call()Ljava/lang/Object;(Executors.java:417)
at java/util/concurrent/FutureTask$Sync.innerRun()V(FutureTask.java:269)
at java/util/concurrent/FutureTask.run()V(FutureTask.java:123)
at java/util/concurrent/ThreadPoolExecutor$Worker.runTask(Ljava/lang/Runnable;)V(ThreadPoolExecutor.java:650)
at java/util/concurrent/ThreadPoolExecutor$Worker.run()V(ThreadPoolExecutor.java:675)
at java/lang/Thread.run()V(Unknown Source)
at jrockit/vm/RNI.c2java(IIII)V(Native Method)
-- end of trace