内存异常 帮忙解决 谢谢

Question

2009-2-21 22:48:02 org.apache.catalina.session.StandardSession expire
严重: Session event listener threw exception
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [applicationContext.xml]: Initialization of bean failed; nested exception is java.lang.OutOfMemoryError: GC overhead limit exceeded
java.lang.OutOfMemoryError: GC overhead limit exceeded
at java.util.Arrays.copyOf(Arrays.java:2882)
at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:100)
at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:390)
at java.lang.StringBuffer.append(StringBuffer.java:224)
at org.hibernate.sql.Select.toStatementString(Select.java:56)
at org.hibernate.loader.AbstractEntityLoader.initStatementString(AbstractEntityLoader.java:118)
at org.hibernate.loader.AbstractEntityLoader.initStatementString(AbstractEntityLoader.java:79)
at org.hibernate.loader.AbstractEntityLoader.initAll(AbstractEntityLoader.java:58)
at org.hibernate.loader.entity.EntityLoader.<init>(EntityLoader.java:89)
at org.hibernate.loader.entity.EntityLoader.<init>(EntityLoader.java:59)
at org.hibernate.loader.entity.EntityLoader.<init>(EntityLoader.java:49)
at org.hibernate.loader.entity.BatchingEntityLoader.createBatchingEntityLoader(BatchingEntityLoader.java:103)
at org.hibernate.persister.entity.BasicEntityPersister.createEntityLoader(BasicEntityPersister.java:1431)
at org.hibernate.persister.entity.BasicEntityPersister.createEntityLoader(BasicEntityPersister.java:1435)
at org.hibernate.persister.entity.BasicEntityPersister.createLoaders(BasicEntityPersister.java:2449)
at org.hibernate.persister.entity.BasicEntityPersister.postInstantiate(BasicEntityPersister.java:2432)
at org.hibernate.persister.entity.SingleTableEntityPersister.postInstantiate(SingleTableEntityPersister.java:656)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:244)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1005)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory(LocalSessionFactoryBean.java:825)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:751)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1091)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:396)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:233)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:145)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:277)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:313)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:87)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:72)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:63)
at cn.abc.tool.SessionCounter.sessionDestroyed(SessionCounter.java:77)
at org.apache.catalina.session.StandardSession.expire(StandardSession.java:702)2009-2-21 22:57:41 org.apache.catalina.session.StandardSession expire
严重: Session event listener threw exception
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [applicationContext.xml]: Initialization of bean failed; nested exception is java.lang.OutOfMemoryError: Java heap space
java.lang.OutOfMemoryError: Java heap space

Answer 1

java.lang.OutOfMemoryError: Java heap space
就看懂这行了....爆内存

Answer 2

如果是运行了一段时间(并进行了不少操作)后会出这个异常，请仔细检查你的DAO的写法，
是不是每次执行dao方法都会导致一个sessionFactory被创建，则会导致内存溢出，sessionFactory只需要一个

Answer 3

在spring xml中Dao的注入  其中的一段  帮我看看有问题吗 谢谢<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource" />
</property>

<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">false</prop>
<prop key="hibernate.use_sql_comments">true</prop>
<!-- <prop key="hibernate.cache.provider_class">org.hibernate.cache.EhCacheProvider</prop>--> 
       <!-- <prop key="hibernate.cache.use_query_cache">true</prop> -->
</props>
</property>

<property name="mappingResources">
<list>
<value>cn/abc/hibernate/Member.hbm.xml</value>
</list>
</property>

</bean> <bean id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory">
<ref local="sessionFactory" />
</property>
</bean> <bean id="memberdao" class="cn.abc.Dao.MemberDaoImpl">
<property name="sessionFactory">
<ref local="sessionFactory" />
</property>
</bean>
<bean id="memberProxy"
class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
<property name="transactionManager">
<ref bean="transactionManager" />
</property>
<property name="target">
<ref local="memberdao" />
</property>
<property name="transactionAttributes">
<props>
<prop key="insert*">PROPAGATION_REQUIRED</prop>
<prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
<prop key="is*">PROPAGATION_REQUIRED,readOnly</prop>
</props>
</property>
</bean>

Answer 4

你没说是启动时候异常，还是运行一段时间异常？
上面的xml没啥问题