Java堆中的空间错误

我有一个消息驱动Bean(ObjectUpdateMDB)监听一个主题,然后更新它在数据库中接收到的对象.有很多对象被更新.经过一段时间的运行,我得到这个例外：

SEVERE: JTS5031: Exception [org.omg.CORBA.INTERNAL:   vmcid: 0x0  minor code: 0 completed: Maybe] on Resource [rollback] operation.
SEVERE: MDB00049: Message-driven bean [Persistence:ObjectUpdateMDB]: Exception in postinvoke : [javax.transaction.SystemException: org.omg.CORBA.INTERNAL: JTS5031: Exception [org.omg.CORBA.INTERNAL:   vmcid: 0x0  minor code: 0 completed: Maybe] on Resource [rollback] operation.  vmcid: 0x0  minor code: 0  completed: No]
SEVERE: javax.transaction.SystemException
javax.transaction.SystemException: org.omg.CORBA.INTERNAL: JTS5031: Exception [org.omg.CORBA.INTERNAL:   vmcid: 0x0  minor code: 0 completed: Maybe] on Resource [rollback] operation.  vmcid: 0x0  minor code: 0  completed: No
    at com.sun.jts.jta.TransactionManagerImpl.rollback(TransactionManagerImpl.java:350)
    at com.sun.enterprise.distributedtx.J2EETransactionManagerImpl.rollback(J2EETransactionManagerImpl.java:1144)
    at com.sun.enterprise.distributedtx.J2EETransactionManagerOpt.rollback(J2EETransactionManagerOpt.java:426)
    at com.sun.ejb.containers.BaseContainer.completeNewTx(BaseContainer.java:3767)
    at com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:3571)
    at com.sun.ejb.containers.MessageBeanContainer.afterMessageDeliveryInternal(MessageBeanContainer.java:1226)
    at com.sun.ejb.containers.MessageBeanContainer.afterMessageDelivery(MessageBeanContainer.java:1197)
    at com.sun.ejb.containers.MessageBeanListenerImpl.afterMessageDelivery(MessageBeanListenerImpl.java:79)
    at com.sun.enterprise.connectors.inflow.MessageEndpointInvocationHandler.invoke(MessageEndpointInvocationHandler.java:139)
    at $Proxy98.afterDelivery(Unknown Source)
    at com.sun.messaging.jms.ra.OnMessageRunner.run(OnMessageRunner.java:324)
    at com.sun.enterprise.connectors.work.OneWork.doWork(OneWork.java:76)
    at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:555)

INFO: MDB00037: [Persistence:ObjectUpdateMDB]: Message-driven bean invocation exception: [java.lang.OutOfMemoryError: Java heap space]
INFO: java.lang.OutOfMemoryError
java.lang.OutOfMemoryError: Java heap space

看来这是堆积空间的一个问题.我需要调整堆空间？ App Server本身还是Broker？我该怎么做？