Spring's @Scheduled error : Only one AsyncAnnotationBeanPostProcessor may exist within the context

Question

I am trying Spring 3\'s @Scheduled annotation . Here is my configuration (app.xml) :

Answer 1

The application context is being initialized twice but org.springframework.scheduling.config.AnnotationDrivenBeanDefinitionParser fails registering bean ASYNC_ANNOTATION_PROCESSOR_BEAN_NAME second time.

I encountered this problem in unit tests where @ContextConfiguration("/path/to/applicationContext.xml") was accidentally on both the parent test class and child test class (with default value of inheritLocations true).