I am using JBoss 5 CR2 version with OpenJPA v1.2 for my application. The application has a custom JAAS login module that looks up user service (stateless ejb3) and remotely invokes findUser(userId) method to retrieve user information. JBoss runs into an infinite error loop while serializing user information after completing findUser method in user service. If I lookup user service ejb3 and remotely invoke findUser method from standalone jdk client, the method runs successfully. Problem arises only when the customlogin module tries to invoke the findUser method remotely. Has anyone experienced similar error with JBoss CR2? Appreciate any help. Following is the stack trace ------------------------------------------------------------------------------------------------------------------------ [org.jboss.serial.persister.RegularObjectPersister] (http-127.0.0.1-8080-4) error java.lang.reflect.InvocationTargetException at sun.reflect.GeneratedMethodAccessor202.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithMethod(RegularObjectPersister.java:120) at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:86) at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:188) at org.jboss.serial.objectmetamodel.DataContainer$DataContainerOutput.writeObject(DataContainer.java:390) at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithFields(RegularObjectPersister.java:182) at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:90) at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:188) at org.jboss.serial.objectmetamodel.DataContainer$DataContainerOutput.writeObject(DataContainer.java:390) at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithFields(RegularObjectPersister.java:182) at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:90) at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:188) at org.jboss.serial.objectmetamodel.DataContainer$DataContainerOutput.writeObject(DataContainer.java:390) at org.jboss.serial.persister.ObjectOutputStreamProxy.writeObjectOverride(ObjectOutputStreamProxy.java:60) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:298) at java.util.ArrayList.writeObject(ArrayList.java:569) at sun.reflect.GeneratedMethodAccessor202.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithMethod(RegularObjectPersister.java:120) at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:86) at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:188) at org.jboss.serial.objectmetamodel.DataContainer$DataContainerOutput.writeObject(DataContainer.java:390) at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithFields(RegularObjectPersister.java:182) at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:90) at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:188) at org.jboss.serial.objectmetamodel.DataContainer$DataContainerOutput.writeObject(DataContainer.java:390) at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithFields(RegularObjectPersister.java:182) at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:90) at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:188) at org.jboss.serial.objectmetamodel.DataContainer$DataContainerOutput.writeObject(DataContainer.java:390) at org.jboss.serial.persister.ObjectOutputStreamProxy.writeObjectOverride(ObjectOutputStreamProxy.java:60) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:298) at java.util.ArrayList.writeObject(ArrayList.java:569) at sun.reflect.GeneratedMethodAccessor202.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithMethod(RegularObjectPersister.java:120) at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:86) at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:188) at org.jboss.serial.objectmetamodel.DataContainer$DataContainerOutput.writeObject(DataContainer.java:390) at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithFields(RegularObjectPersister.java:182) at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:90) at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:188) at org.jboss.serial.objectmetamodel.DataContainer$DataContainerOutput.writeObject(DataContainer.java:390) at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithFields(RegularObjectPersister.java:182) at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:90) at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:188) at org.jboss.serial.objectmetamodel.DataContainer$DataContainerOutput.writeObject(DataContainer.java:390) at org.jboss.serial.persister.ObjectOutputStreamProxy.writeObjectOverride(ObjectOutputStreamProxy.java:60) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:298) at java.util.ArrayList.writeObject(ArrayList.java:569) at sun.reflect.GeneratedMethodAccessor202.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) ----------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------ View this message in context: JBoss 5 CR2 - Serialization error 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