title: Could not obtain transaction-synchronized Session for current thread
body: <p>I am getting the following Exception with a Spring4/Hibernate4 project I converted from xml- to Java-Config. </p>
  
  <pre><code>org.hibernate.HibernateException: Could not obtain transaction-synchronized Session for current thread
  </code></pre>
  
  <p>The project starts up property and errorfree in Eclipse, but on the first request the Exception appears. In my <code>ConfigRoot</code>-class I have <code>@Bean</code> configured for <code>DataSource</code>, <code>SessionFactory</code>, <code>HibernateTransactionManager</code>, <code>ImprovedNamingStrategy</code>.</p>
  
  <p>All my <code>@Service</code> services are annotated with <code>@Transactional</code>.</p>
  
  <p>Any idea where this could come from ?</p>
  
  <p><strong>Edit 1</strong></p>
  
  <p>As requested, here the stacktrace:</p>
  
  <pre>
  org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.hibernate.HibernateException: Could not obtain transaction-synchronized Session for current thread
      org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:978)
      org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)
      javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
      org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
      javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
      org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
      org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
      org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
      org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
  
  org.hibernate.HibernateException: Could not obtain transaction-synchronized Session for current thread
      org.springframework.orm.hibernate4.SpringSessionContext.currentSession(SpringSessionContext.java:134)
      org.hibernate.internal.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:1014)
      employees.service.PersonService.getAllInHierarchcalOrder(PersonService.java:58)
      employees.controller.PersonController.getPersons(PersonController.java:64)
      sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      java.lang.reflect.Method.invoke(Method.java:606)
      org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215)
      org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
      org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
      org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:781)
      org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:721)
      org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)
      org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943)
      org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)
      org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
      org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)
      javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
      org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
      javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
      org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
      org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
      org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
      org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
  </pre>
  
  <p><strong>Edit 2</strong></p>
  
  <p>Strangely, I borrowed the whole Java-Config code from another project which works flawlessly, certainly I missed a detail. That's why I am not considering <a href="https://stackoverflow.com/questions/25569365/some-transaction-propagations-not-working-with-spring-hibernate-4">Some transaction propagations not working with Spring/Hibernate 4</a>.</p>