无法提交会话或回滚

我正在使用jBPM5，并且我已将Bitronix事务管理器（BTM）配置为jBPM进程持久性单元使用的事务管理器 .

从过去的两周开始，一切正常，但突然之后它开始失败并出现以下异常，这导致我重新启动应用程序服务器 . 重启后，一切正常，如预期 .

异常Stacktrace：

com.xxx.jbpm.workflow.exception.WorkflowException: Could not commit session or rollback
  at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:97)
  at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:334)
  at com.xxx.platform.eventpublisher.xxxEventPublisher.publish(xxxEventPublisher.java:16)
  at com.xxx.xxx.wsserver.impl.dlp.DLPCheckTask.publish(DLPCheckTask.java:97)
  at com.xxx.xxx.wsserver.impl.dlp.DLPCheckTask.run(DLPCheckTask.java:56)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
  at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.RuntimeException: Could not commit session or rollback
  at org.drools.persistence.SingleSessionCommandService.rollbackTransaction(SingleSessionCommandService.java:406)
  at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:381)
  at org.drools.command.impl.CommandBasedStatefulKnowledgeSession.startProcessInstance(CommandBasedStatefulKnowledgeSession.java:237)
  at com.xxx.jbpm.workflow.services.WorkflowServiceHandler.startWorkflow(WorkflowServiceHandler.java:71)
  at com.xxx.jbpm.workflow.impl.WorkflowManagerImpl.startWorkflow(WorkflowManagerImpl.java:46)
  ... 12 more
Caused by: java.lang.RuntimeException: Unable to rollback transaction
  at org.drools.persistence.jta.JtaTransactionManager.rollback(JtaTransactionManager.java:197)
  at org.drools.persistence.SingleSessionCommandService.rollbackTransaction(SingleSessionCommandService.java:402)
  ... 16 more
Caused by: java.lang.IllegalStateException: no transaction started on this thread
  at bitronix.tm.BitronixTransactionManager.rollback(BitronixTransactionManager.java:150)
  at org.drools.persistence.jta.JtaTransactionManager.rollback(JtaTransactionManager.java:191)
  ... 17 more

我们正在启动大量的事务/工作流并使用jbpm库版本的5.5.0.Final of jbpm-human-task-core，jbpm-bpmn2，jbpm-persistence-jpa .

有人可以帮我指出正确的方向吗？

非常感谢，Mayank