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ConcurrentModification Exception in WL 7.0 SP4

SenthilKumar Natarajan
Greenhorn

Joined: Mar 21, 2001
Posts: 15
Suggestion Pls!

We are porting our application from WL 6.1 to 7.0 SP4 and are seeing exactly the stack trace listed below -- ConcurrentModificationException called from TxManager.flushModifiedBeans(). Can anyone help by suggesting what sorts of things we should be looking for in our code?

Thanks,

Senthil

Stack Trace:
------------
[exec] <Jun 23, 2004 12:53:39 PM IST> <Info> <EJB> <010049> <EJB Exception in method: ejbFindByName: java.util.ConcurrentModificationException
[exec] java.util.ConcurrentModificationException
[exec] at java.util.HashMap$HashIterator.next(HashMap.java:731)
[exec] at weblogic.ejb20.internal.TxManager.flushModifiedBeans(TxManager.java:328)
[exec] at weblogic.ejb20.manager.BaseEntityManager.flushModifiedBeans(BaseEntityManager.java:1644)
[exec] at weblogic.ejb20.manager.BeanManagedPersistenceManager.scalarFinder(BeanManagedPersistenceManager.java:71)
[exec] at weblogic.ejb20.manager.BaseEntityManager.scalarFinder(BaseEntityManager.java:881)
[exec] at weblogic.ejb20.manager.BaseEntityManager.remoteScalarFinder(BaseEntityManager.java:815)
[exec] at weblogic.ejb20.internal.EntityEJBHome.finder(EntityEJBHome.java:550)
[exec] at com.covigna.dom.PropertyTypeBean_bkv29d_HomeImpl.findByName(PropertyTypeBean_bkv29d_HomeImpl.java:269)
[exec] at com.covigna.dom.xml.MetaModelEJBGenerator.createEJBPropertyType(MetaModelEJBGenerator.java:1555)
[exec] at com.covigna.dom.xml.MetaModelEJBGenerator.processPropertyTypeObjOrRef(MetaModelEJBGenerator.java:2335)
[exec] at com.covigna.dom.xml.DomInstanceEJBGenerator.setEJBProperties(DomInstanceEJBGenerator.java:573)
[exec] at com.covigna.dom.xml.DomInstanceEJBGenerator.setProperties(DomInstanceEJBGenerator.java:818)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.createEJBEntity(EntityInstanceEJBGenerator.java:553)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.processSubTypeDef(EntityInstanceEJBGenerator.java:1575)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.createEJBEntity(EntityInstanceEJBGenerator.java:287)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.fromXML(EntityInstanceEJBGenerator.java:1795)
[exec] at com.covigna.dom.xml.XMLMapperBean.fromXML(XMLMapperBean.java:160)
[exec] at com.covigna.dom.xml.XMLMapperBean_w24ffc_EOImpl.fromXML(XMLMapperBean_w24ffc_EOImpl.java:46)
[exec] at com.covigna.tools.importexport.Importer.createEntities(Importer.java:472)
[exec] at com.covigna.tools.importexport.Importer.importEntities(Importer.java:157)
[exec] at com.covigna.tools.importexport.Importer.importXMLFile(Importer.java:282)
[exec] at com.covigna.tools.importexport.Importer.importFile(Importer.java:186)
[exec] at com.covigna.tools.importexport.Importer.main(Importer.java:328)
[exec] at com.covigna.command.api.tools.ImportCommand.performActualExecute(ImportCommand.java:191)
[exec] at com.covigna.command.BaseCommand.run(BaseCommand.java:349)
[exec] Jun 23, 2004 12:53:39 PM com.covigna.dom.xml.EntityInstanceEJBGenerator writeErrorConditional
[exec] at com.covigna.command.BaseCommand.performExecute(BaseCommand.java:265)
[exec] SEVERE: javax.transaction.TransactionRolledbackException: EJB Exception:: java.util.ConcurrentModificationException
[exec] at com.covigna.command.CommandServerBean.executeStaticCommand(CommandServerBean.java:65)
[exec] at com.covigna.command.CommandServerBean.executeCommand(CommandServerBean.java:45)
[exec] at java.util.HashMap$HashIterator.next(HashMap.java:731)
[exec] at weblogic.ejb20.internal.TxManager.flushModifiedBeans(TxManager.java:328)
[exec] at com.covigna.command.CommandServerBean_7282fw_EOImpl.executeCommand(CommandServerBean_7282fw_EOImpl.java:46)
[exec] at weblogic.ejb20.manager.BaseEntityManager.flushModifiedBeans(BaseEntityManager.java:1644)
[exec] at com.covigna.command.CommandServerBean_7282fw_EOImpl_WLSkel.invoke(Unknown Source)
[exec] at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:441)
[exec] at weblogic.ejb20.manager.BeanManagedPersistenceManager.scalarFinder(BeanManagedPersistenceManager.java:71)
[exec] at weblogic.ejb20.manager.BaseEntityManager.scalarFinder(BaseEntityManager.java:881)
[exec] at weblogic.rmi.cluster.ReplicaAwareServerRef.invoke(ReplicaAwareServerRef.java:114)
[exec] at weblogic.ejb20.manager.BaseEntityManager.remoteScalarFinder(BaseEntityManager.java:815)
[exec] at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:382)
[exec] at weblogic.security.service.SecurityServiceManager.runAs(SecurityServiceManager.java:726)
[exec] at weblogic.ejb20.internal.EntityEJBHome.finder(EntityEJBHome.java:550)
[exec] at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:377)
[exec] at com.covigna.dom.PropertyTypeBean_bkv29d_HomeImpl.findByName(PropertyTypeBean_bkv29d_HomeImpl.java:269)
[exec] at com.covigna.dom.xml.MetaModelEJBGenerator.createEJBPropertyType(MetaModelEJBGenerator.java:1555)
[exec] at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:30)
[exec] at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:234)
[exec] at com.covigna.dom.xml.MetaModelEJBGenerator.processPropertyTypeObjOrRef(MetaModelEJBGenerator.java:2335)
[exec] at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:210)
[exec] >
[exec] at com.covigna.dom.xml.DomInstanceEJBGenerator.setEJBProperties(DomInstanceEJBGenerator.java:573)
[exec] at com.covigna.dom.xml.DomInstanceEJBGenerator.setProperties(DomInstanceEJBGenerator.java:818)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.createEJBEntity(EntityInstanceEJBGenerator.java:553)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.processSubTypeDef(EntityInstanceEJBGenerator.java:1575)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.createEJBEntity(EntityInstanceEJBGenerator.java:287)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.fromXML(EntityInstanceEJBGenerator.java:1795)
[exec] at com.covigna.dom.xml.XMLMapperBean.fromXML(XMLMapperBean.java:160)
[exec] at com.covigna.dom.xml.XMLMapperBean_w24ffc_EOImpl.fromXML(XMLMapperBean_w24ffc_EOImpl.java:46)
[exec] at com.covigna.tools.importexport.Importer.createEntities(Importer.java:472)
[exec] at com.covigna.tools.importexport.Importer.importEntities(Importer.java:157)
[exec] at com.covigna.tools.importexport.Importer.importXMLFile(Importer.java:282)
[exec] at com.covigna.tools.importexport.Importer.importFile(Importer.java:186)
[exec] at com.covigna.tools.importexport.Importer.main(Importer.java:328)
[exec] at com.covigna.command.api.tools.ImportCommand.performActualExecute(ImportCommand.java:191)
[exec] at com.covigna.command.BaseCommand.run(BaseCommand.java:349)
[exec] at com.covigna.command.BaseCommand.performExecute(BaseCommand.java:265)
[exec] at com.covigna.command.CommandServerBean.executeStaticCommand(CommandServerBean.java:65)
[exec] at com.covigna.command.CommandServerBean.executeCommand(CommandServerBean.java:45)
[exec] at com.covigna.command.CommandServerBean_7282fw_EOImpl.executeCommand(CommandServerBean_7282fw_EOImpl.java:46)
[exec] at com.covigna.command.CommandServerBean_7282fw_EOImpl_WLSkel.invoke(Unknown Source)
[exec] at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:441)
[exec] at weblogic.rmi.cluster.ReplicaAwareServerRef.invoke(ReplicaAwareServerRef.java:114)
[exec] at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:382)
[exec] at weblogic.security.service.SecurityServiceManager.runAs(SecurityServiceManager.java:726)
[exec] at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:377)
[exec] at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:30)
[exec] at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:234)
[exec] at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:210)
[exec] ; nested exception is:
[exec] java.util.ConcurrentModificationException
[exec] java.util.ConcurrentModificationException
[exec] at java.util.HashMap$HashIterator.next(HashMap.java:731)
[exec] at weblogic.ejb20.internal.TxManager.flushModifiedBeans(TxManager.java:328)
[exec] at weblogic.ejb20.manager.BaseEntityManager.flushModifiedBeans(BaseEntityManager.java:1644)
[exec] at weblogic.ejb20.manager.BeanManagedPersistenceManager.scalarFinder(BeanManagedPersistenceManager.java:71)
[exec] at weblogic.ejb20.manager.BaseEntityManager.scalarFinder(BaseEntityManager.java:881)
[exec] at weblogic.ejb20.manager.BaseEntityManager.remoteScalarFinder(BaseEntityManager.java:815)
[exec] at weblogic.ejb20.internal.EntityEJBHome.finder(EntityEJBHome.java:550)
[exec] at com.covigna.dom.PropertyTypeBean_bkv29d_HomeImpl.findByName(PropertyTypeBean_bkv29d_HomeImpl.java:269)
[exec] at com.covigna.dom.xml.MetaModelEJBGenerator.createEJBPropertyType(MetaModelEJBGenerator.java:1555)
[exec] at com.covigna.dom.xml.MetaModelEJBGenerator.processPropertyTypeObjOrRef(MetaModelEJBGenerator.java:2335)
[exec] at com.covigna.dom.xml.DomInstanceEJBGenerator.setEJBProperties(DomInstanceEJBGenerator.java:573)
[exec] at com.covigna.dom.xml.DomInstanceEJBGenerator.setProperties(DomInstanceEJBGenerator.java:818)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.createEJBEntity(EntityInstanceEJBGenerator.java:553)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.processSubTypeDef(EntityInstanceEJBGenerator.java:1575)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.createEJBEntity(EntityInstanceEJBGenerator.java:287)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.fromXML(EntityInstanceEJBGenerator.java:1795)
[exec] at com.covigna.dom.xml.XMLMapperBean.fromXML(XMLMapperBean.java:160)
[exec] at com.covigna.dom.xml.XMLMapperBean_w24ffc_EOImpl.fromXML(XMLMapperBean_w24ffc_EOImpl.java:46)
[exec] at com.covigna.tools.importexport.Importer.createEntities(Importer.java:472)
[exec] at com.covigna.tools.importexport.Importer.importEntities(Importer.java:157)
[exec] at com.covigna.tools.importexport.Importer.importXMLFile(Importer.java:282)
[exec] at com.covigna.tools.importexport.Importer.importFile(Importer.java:186)
[exec] at com.covigna.tools.importexport.Importer.main(Importer.java:328)
[exec] at com.covigna.command.api.tools.ImportCommand.performActualExecute(ImportCommand.java:191)
[exec] at com.covigna.command.BaseCommand.run(BaseCommand.java:349)
[exec] at com.covigna.command.BaseCommand.performExecute(BaseCommand.java:265)
[exec] at com.covigna.command.CommandServerBean.executeStaticCommand(CommandServerBean.java:65)
[exec] at com.covigna.command.CommandServerBean.executeCommand(CommandServerBean.java:45)
[exec] at com.covigna.command.CommandServerBean_7282fw_EOImpl.executeCommand(CommandServerBean_7282fw_EOImpl.java:46)
[exec] at com.covigna.command.CommandServerBean_7282fw_EOImpl_WLSkel.invoke(Unknown Source)
[exec] at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:441)
[exec] at weblogic.rmi.cluster.ReplicaAwareServerRef.invoke(ReplicaAwareServerRef.java:114)
[exec] at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:382)
[exec] at weblogic.security.service.SecurityServiceManager.runAs(SecurityServiceManager.java:726)
[exec] at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:377)
[exec] at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:30)
[exec] at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:234)
[exec] at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:210)

[exec] Jun 23, 2004 12:53:40 PM com.covigna.dom.xml.EntityInstanceEJBGenerator writeErrorConditional
[exec] SEVERE: Exception raised:001-00-00001
[exec] Jun 23, 2004 12:53:40 PM com.covigna.dom.xml.EntityInstanceEJBGenerator writeErrorConditional
[exec] SEVERE: Exception stack trace:com.covigna.OpalRuntimeException: 001-00-00001 : Unexpected internal error
[exec] at com.covigna.dom.xml.MetaModelEJBGenerator.createEJBPropertyType(MetaModelEJBGenerator.java:1596)
[exec] at com.covigna.dom.xml.MetaModelEJBGenerator.processPropertyTypeObjOrRef(MetaModelEJBGenerator.java:2335)
[exec] at com.covigna.dom.xml.DomInstanceEJBGenerator.setEJBProperties(DomInstanceEJBGenerator.java:573)
[exec] at com.covigna.dom.xml.DomInstanceEJBGenerator.setProperties(DomInstanceEJBGenerator.java:818)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.createEJBEntity(EntityInstanceEJBGenerator.java:553)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.processSubTypeDef(EntityInstanceEJBGenerator.java:1575)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.createEJBEntity(EntityInstanceEJBGenerator.java:287)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.fromXML(EntityInstanceEJBGenerator.java:1795)
[exec] at com.covigna.dom.xml.XMLMapperBean.fromXML(XMLMapperBean.java:160)
[exec] at com.covigna.dom.xml.XMLMapperBean_w24ffc_EOImpl.fromXML(XMLMapperBean_w24ffc_EOImpl.java:46)
[exec] at com.covigna.tools.importexport.Importer.createEntities(Importer.java:472)
[exec] at com.covigna.tools.importexport.Importer.importEntities(Importer.java:157)
[exec] at com.covigna.tools.importexport.Importer.importXMLFile(Importer.java:282)
[exec] at com.covigna.tools.importexport.Importer.importFile(Importer.java:186)
[exec] at com.covigna.tools.importexport.Importer.main(Importer.java:328)
[exec] at com.covigna.command.api.tools.ImportCommand.performActualExecute(ImportCommand.java:191)
[exec] at com.covigna.command.BaseCommand.run(BaseCommand.java:349)
[exec] at com.covigna.command.BaseCommand.performExecute(BaseCommand.java:265)
[exec] at com.covigna.command.CommandServerBean.executeStaticCommand(CommandServerBean.java:65)
[exec] at com.covigna.command.CommandServerBean.executeCommand(CommandServerBean.java:45)
[exec] at com.covigna.command.CommandServerBean_7282fw_EOImpl.executeCommand(CommandServerBean_7282fw_EOImpl.java:46)
[exec] at com.covigna.command.CommandServerBean_7282fw_EOImpl_WLSkel.invoke(Unknown Source)
[exec] at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:441)
[exec] at weblogic.rmi.cluster.ReplicaAwareServerRef.invoke(ReplicaAwareServerRef.java:114)
[exec] at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:382)
[exec] at weblogic.security.service.SecurityServiceManager.runAs(SecurityServiceManager.java:726)
[exec] at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:377)
[exec] at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:30)
[exec] at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:234)
[exec] at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:210)

[exec] Jun 23, 2004 12:53:40 PM com.covigna.dom.xml.EntityInstanceEJBGenerator writeErrorConditional
[exec] SEVERE: Exception raised:001-00-00001
[exec] Jun 23, 2004 12:53:40 PM com.covigna.dom.xml.EntityInstanceEJBGenerator writeErrorConditional
[exec] SEVERE: Exception stack trace:com.covigna.OpalRuntimeException: 001-00-00001 : Unexpected internal error
[exec] at com.covigna.dom.xml.MetaModelEJBGenerator.createEJBPropertyType(MetaModelEJBGenerator.java:1596)
[exec] at com.covigna.dom.xml.MetaModelEJBGenerator.processPropertyTypeObjOrRef(MetaModelEJBGenerator.java:2335)
[exec] at com.covigna.dom.xml.DomInstanceEJBGenerator.setEJBProperties(DomInstanceEJBGenerator.java:573)
[exec] at com.covigna.dom.xml.DomInstanceEJBGenerator.setProperties(DomInstanceEJBGenerator.java:818)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.createEJBEntity(EntityInstanceEJBGenerator.java:553)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.processSubTypeDef(EntityInstanceEJBGenerator.java:1575)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.createEJBEntity(EntityInstanceEJBGenerator.java:287)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.fromXML(EntityInstanceEJBGenerator.java:1795)
[exec] at com.covigna.dom.xml.XMLMapperBean.fromXML(XMLMapperBean.java:160)
[exec] at com.covigna.dom.xml.XMLMapperBean_w24ffc_EOImpl.fromXML(XMLMapperBean_w24ffc_EOImpl.java:46)
[exec] at com.covigna.tools.importexport.Importer.createEntities(Importer.java:472)
[exec] at com.covigna.tools.importexport.Importer.importEntities(Importer.java:157)
[exec] at com.covigna.tools.importexport.Importer.importXMLFile(Importer.java:282)
[exec] at com.covigna.tools.importexport.Importer.importFile(Importer.java:186)
[exec] at com.covigna.tools.importexport.Importer.main(Importer.java:328)
[exec] at com.covigna.command.api.tools.ImportCommand.performActualExecute(ImportCommand.java:191)
[exec] at com.covigna.command.BaseCommand.run(BaseCommand.java:349)
[exec] at com.covigna.command.BaseCommand.performExecute(BaseCommand.java:265)
[exec] at com.covigna.command.CommandServerBean.executeStaticCommand(CommandServerBean.java:65)
[exec] at com.covigna.command.CommandServerBean.executeCommand(CommandServerBean.java:45)
[exec] at com.covigna.command.CommandServerBean_7282fw_EOImpl.executeCommand(CommandServerBean_7282fw_EOImpl.java:46)
[exec] at com.covigna.command.CommandServerBean_7282fw_EOImpl_WLSkel.invoke(Unknown Source)
[exec] at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:441)
[exec] at weblogic.rmi.cluster.ReplicaAwareServerRef.invoke(ReplicaAwareServerRef.java:114)
[exec] at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:382)
[exec] at weblogic.security.service.SecurityServiceManager.runAs(SecurityServiceManager.java:726)
[exec] at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:377)
[exec] at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:30)
[exec] at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:234)
[exec] at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:210)

[exec] Jun 23, 2004 12:53:40 PM com.covigna.dom.xml.EntityInstanceEJBGenerator writeErrorConditional
[exec] SEVERE: Exception raised: 001-00-00001
[exec] Jun 23, 2004 12:53:40 PM com.covigna.dom.xml.EntityInstanceEJBGenerator writeErrorConditional
[exec] SEVERE: Exception stack trace:com.covigna.OpalRuntimeException: 001-00-00001 : Unexpected internal error
[exec] at com.covigna.dom.xml.MetaModelEJBGenerator.createEJBPropertyType(MetaModelEJBGenerator.java:1596)
[exec] at com.covigna.dom.xml.MetaModelEJBGenerator.processPropertyTypeObjOrRef(MetaModelEJBGenerator.java:2335)
[exec] at com.covigna.dom.xml.DomInstanceEJBGenerator.setEJBProperties(DomInstanceEJBGenerator.java:573)
[exec] at com.covigna.dom.xml.DomInstanceEJBGenerator.setProperties(DomInstanceEJBGenerator.java:818)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.createEJBEntity(EntityInstanceEJBGenerator.java:553)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.processSubTypeDef(EntityInstanceEJBGenerator.java:1575)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.createEJBEntity(EntityInstanceEJBGenerator.java:287)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.fromXML(EntityInstanceEJBGenerator.java:1795)
[exec] at com.covigna.dom.xml.XMLMapperBean.fromXML(XMLMapperBean.java:160)
[exec] at com.covigna.dom.xml.XMLMapperBean_w24ffc_EOImpl.fromXML(XMLMapperBean_w24ffc_EOImpl.java:46)
[exec] at com.covigna.tools.importexport.Importer.createEntities(Importer.java:472)
[exec] at com.covigna.tools.importexport.Importer.importEntities(Importer.java:157)
[exec] at com.covigna.tools.importexport.Importer.importXMLFile(Importer.java:282)
[exec] at com.covigna.tools.importexport.Importer.importFile(Importer.java:186)
[exec] at com.covigna.tools.importexport.Importer.main(Importer.java:328)
[exec] at com.covigna.command.api.tools.ImportCommand.performActualExecute(ImportCommand.java:191)
[exec] at com.covigna.command.BaseCommand.run(BaseCommand.java:349)
[exec] at com.covigna.command.BaseCommand.performExecute(BaseCommand.java:265)
[exec] at com.covigna.command.CommandServerBean.executeStaticCommand(CommandServerBean.java:65)
[exec] at com.covigna.command.CommandServerBean.executeCommand(CommandServerBean.java:45)
[exec] at com.covigna.command.CommandServerBean_7282fw_EOImpl.executeCommand(CommandServerBean_7282fw_EOImpl.java:46)
[exec] at com.covigna.command.CommandServerBean_7282fw_EOImpl_WLSkel.invoke(Unknown Source)
[exec] at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:441)
[exec] at weblogic.rmi.cluster.ReplicaAwareServerRef.invoke(ReplicaAwareServerRef.java:114)
[exec] at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:382)
[exec] at weblogic.security.service.SecurityServiceManager.runAs(SecurityServiceManager.java:726)
[exec] at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:377)
[exec] at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:30)
[exec] at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:234)
[exec] at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:210)

[exec] Jun 23, 2004 12:53:40 PM com.covigna.dom.xml.XMLMapperBean_w24ffc_Impl writeErrorConditional
[exec] SEVERE: Exception raised: 001-00-00001
[exec] Jun 23, 2004 12:53:40 PM com.covigna.dom.xml.XMLMapperBean_w24ffc_Impl writeErrorConditional
[exec] SEVERE: Exception stack trace:com.covigna.OpalRuntimeException: 001-00-00001 : Unexpected internal error
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.fromXML(EntityInstanceEJBGenerator.java:1804)
[exec] at com.covigna.dom.xml.XMLMapperBean.fromXML(XMLMapperBean.java:160)
[exec] at com.covigna.dom.xml.XMLMapperBean_w24ffc_EOImpl.fromXML(XMLMapperBean_w24ffc_EOImpl.java:46)
[exec] at com.covigna.tools.importexport.Importer.createEntities(Importer.java:472)
[exec] at com.covigna.tools.importexport.Importer.importEntities(Importer.java:157)
[exec] at com.covigna.tools.importexport.Importer.importXMLFile(Importer.java:282)
[exec] at com.covigna.tools.importexport.Importer.importFile(Importer.java:186)
[exec] at com.covigna.tools.importexport.Importer.main(Importer.java:328)
[exec] at com.covigna.command.api.tools.ImportCommand.performActualExecute(ImportCommand.java:191)
[exec] at com.covigna.command.BaseCommand.run(BaseCommand.java:349)
[exec] at com.covigna.command.BaseCommand.performExecute(BaseCommand.java:265)
[exec] at com.covigna.command.CommandServerBean.executeStaticCommand(CommandServerBean.java:65)
[exec] at com.covigna.command.CommandServerBean.executeCommand(CommandServerBean.java:45)
[exec] at com.covigna.command.CommandServerBean_7282fw_EOImpl.executeCommand(CommandServerBean_7282fw_EOImpl.java:46)
[exec] at com.covigna.command.CommandServerBean_7282fw_EOImpl_WLSkel.invoke(Unknown Source)
[exec] at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:441)
[exec] at weblogic.rmi.cluster.ReplicaAwareServerRef.invoke(ReplicaAwareServerRef.java:114)
[exec] at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:382)
[exec] at weblogic.security.service.SecurityServiceManager.runAs(SecurityServiceManager.java:726)
[exec] at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:377)
[exec] at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:30)
[exec] at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:234)
[exec] at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:210)
[exec] com.covigna.OpalRuntimeException: 001-00-00001 : Unexpected internal error
[exec] at com.covigna.dom.xml.MetaModelEJBGenerator.createEJBPropertyType(MetaModelEJBGenerator.java:1596)
[exec] at com.covigna.dom.xml.MetaModelEJBGenerator.processPropertyTypeObjOrRef(MetaModelEJBGenerator.java:2335)
[exec] at com.covigna.dom.xml.DomInstanceEJBGenerator.setEJBProperties(DomInstanceEJBGenerator.java:573)
[exec] at com.covigna.dom.xml.DomInstanceEJBGenerator.setProperties(DomInstanceEJBGenerator.java:818)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.createEJBEntity(EntityInstanceEJBGenerator.java:553)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.processSubTypeDef(EntityInstanceEJBGenerator.java:1575)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.createEJBEntity(EntityInstanceEJBGenerator.java:287)
[exec] at com.covigna.dom.xml.EntityInstanceEJBGenerator.fromXML(EntityInstanceEJBGenerator.java:1795)
[exec] at com.covigna.dom.xml.XMLMapperBean.fromXML(XMLMapperBean.java:160)
[exec] at com.covigna.dom.xml.XMLMapperBean_w24ffc_EOImpl.fromXML(XMLMapperBean_w24ffc_EOImpl.java:46)
[exec] at com.covigna.tools.importexport.Importer.createEntities(Importer.java:472)
[exec] at com.covigna.tools.importexport.Importer.importEntities(Importer.java:157)
[exec] at com.covigna.tools.importexport.Importer.importXMLFile(Importer.java:282)
[exec] at com.covigna.tools.importexport.Importer.importFile(Importer.java:186)
[exec] at com.covigna.tools.importexport.Importer.main(Importer.java:328)
[exec] at com.covigna.command.api.tools.ImportCommand.performActualExecute(ImportCommand.java:191)
[exec] at com.covigna.command.BaseCommand.run(BaseCommand.java:349)
[exec] at com.covigna.command.BaseCommand.performExecute(BaseCommand.java:265)
[exec] at com.covigna.command.CommandServerBean.executeStaticCommand(CommandServerBean.java:65)
[exec] at com.covigna.command.CommandServerBean.executeCommand(CommandServerBean.java:45)
[exec] at com.covigna.command.CommandServerBean_7282fw_EOImpl.executeCommand(CommandServerBean_7282fw_EOImpl.java:46)
[exec] at com.covigna.command.CommandServerBean_7282fw_EOImpl_WLSkel.invoke(Unknown Source)
[exec] at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:441)
[exec] at weblogic.rmi.cluster.ReplicaAwareServerRef.invoke(ReplicaAwareServerRef.java:114)
[exec] at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:382)
[exec] at weblogic.security.service.SecurityServiceManager.runAs(SecurityServiceManager.java:726)
[exec] at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:377)
[exec] at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:30)
[exec] at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:234)
[exec] at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:210)

[exec] <Jun 23, 2004 12:53:40 PM IST> <Info> <EJB> <010051> <EJB Exception during invocation from home: com.covigna.dom.xml.XMLMapperBean_w24ffc_HomeImpl@2b2cf2 threw exception: com.covigna.OpalRuntimeException: 001-00-00001 : Unexpected internal error
[exec] com.covigna.OpalRuntimeException: 001-00-00001 : Unexpected internal error
[exec] at com.covigna.dom.xml.XMLMapperBean.fromXML(XMLMapperBean.java:172)
[exec] at com.covigna.dom.xml.XMLMapperBean_w24ffc_EOImpl.fromXML(XMLMapperBean_w24ffc_EOImpl.java:46)
[exec] at com.covigna.tools.importexport.Importer.createEntities(Importer.java:472)
[exec] at com.covigna.tools.importexport.Importer.importEntities(Importer.java:157)
[exec] at com.covigna.tools.importexport.Importer.importXMLFile(Importer.java:282)
[exec] at com.covigna.tools.importexport.Importer.importFile(Importer.java:186)
[exec] at com.covigna.tools.importexport.Importer.main(Importer.java:328)
[exec] at com.covigna.command.api.tools.ImportCommand.performActualExecute(ImportCommand.java:191)
[exec] at com.covigna.command.BaseCommand.run(BaseCommand.java:349)
[exec] at com.covigna.command.BaseCommand.performExecute(BaseCommand.java:265)
[exec] at com.covigna.command.CommandServerBean.executeStaticCommand(CommandServerBean.java:65)
[exec] at com.covigna.command.CommandServerBean.executeCommand(CommandServerBean.java:45)
[exec] at com.covigna.command.CommandServerBean_7282fw_EOImpl.executeCommand(CommandServerBean_7282fw_EOImpl.java:46)
[exec] at com.covigna.command.CommandServerBean_7282fw_EOImpl_WLSkel.invoke(Unknown Source)
[exec] at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:441)
[exec] at weblogic.rmi.cluster.ReplicaAwareServerRef.invoke(ReplicaAwareServerRef.java:114)
[exec] at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:382)
[exec] at weblogic.security.service.SecurityServiceManager.runAs(SecurityServiceManager.java:726)
[exec] at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:377)
[exec] at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:30)
[exec] at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:234)
[exec] at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:210)
[exec] >


Senthil Kumar Natarajan<br />SCEA
Karthik Guru
Ranch Hand

Joined: Mar 06, 2001
Posts: 1209
Guess you must be having a session facade bean to execute your business logic. As the stack trace suggests it a concurrency problem.

SLSB promises that it will take care of threading issues for you. But do you have some static variables in a class that is likely to be modified by different instances?

Looks like a single copy of a collection / list is being shared by multiple instances / threads and while one of them is iterating through the instance, the other guy is trying to modify it. Look for such global variables.
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: ConcurrentModification Exception in WL 7.0 SP4