Neo4j OutOfMemory问题

这是我的Main.java的源代码。 它是从neo4j-apoc-1.0例子中抓取的。 修改的目的是存储2个节点和1个关系的1Mlogging：

package javaapplication2; import org.neo4j.graphdb.GraphDatabaseService; import org.neo4j.graphdb.Node; import org.neo4j.graphdb.RelationshipType; import org.neo4j.graphdb.Transaction; import org.neo4j.kernel.EmbeddedGraphDatabase; public class Main { private static final String DB_PATH = "neo4j-store-1M"; private static final String NAME_KEY = "name"; private static enum ExampleRelationshipTypes implements RelationshipType { EXAMPLE } public static void main(String[] args) { GraphDatabaseService graphDb = null; try { System.out.println( "Init database..." ); graphDb = new EmbeddedGraphDatabase( DB_PATH ); registerShutdownHook( graphDb ); System.out.println( "Start of creating database..." ); int valIndex = 0; for(int i=0; i<1000; ++i) { for(int j=0; j<1000; ++j) { Transaction tx = graphDb.beginTx(); try { Node firstNode = graphDb.createNode(); firstNode.setProperty( NAME_KEY, "Hello" + valIndex ); Node secondNode = graphDb.createNode(); secondNode.setProperty( NAME_KEY, "World" + valIndex ); firstNode.createRelationshipTo( secondNode, ExampleRelationshipTypes.EXAMPLE ); tx.success(); ++valIndex; } finally { tx.finish(); } } } System.out.println("Ok, client processing finished!"); } finally { System.out.println( "Shutting down database ..." ); graphDb.shutdown(); } } private static void registerShutdownHook( final GraphDatabaseService graphDb ) { // Registers a shutdown hook for the Neo4j instance so that it // shuts down nicely when the VM exits (even if you "Ctrl-C" the // running example before it's completed) Runtime.getRuntime().addShutdownHook( new Thread() { @Override public void run() { graphDb.shutdown(); } } ); } } 

经过几次迭代（大约150K）后，我得到了错误信息：

“java.lang.OutOfMemoryError：java.nio.HeapByteBuffer上的Java堆空间（HeapByteBuffer.java:39）在org.neo4j.kernel.impl.nioneo上的java.nio.ByteBuffer.allocate（ByteBuffer.java:312）上。 store.PlainPersistenceWindow。（PlainPersistenceWindow.java:30）at org.neo4j.kernel.impl.nioneo.store.PersistenceWindowPool.allocateNewWindow（PersistenceWindowPool.java:534）at org.neo4j.kernel.impl.nioneo.store.PersistenceWindowPool.refreshBricks （PersistenceWindowPool.java:430）at org.neo4j.kernel.impl.nioneo.store.PersistenceWindowPool.acquire（PersistenceWindowPool.java:122）at org.neo4j.kernel.impl.nioneo.store.CommonAbstractStore.acquireWindow（CommonAbstractStore.java ：459）at org.neo4j.kernel.impl.nioneo.store.AbstractDynamicStore.updateRecord（AbstractDynamicStore.java:240）at org.neo4j.kernel.impl.nioneo.store.PropertyStore.updateRecord（PropertyStore.java:209）at org.neo4j.kernel.impl.nioneo.xa.Command $ PropertyCommand.execute（Command.java:513）at org.neo4j.kernel.impl.nioneo.xa.NeoTransaction.doCommit（Ne （org.neo4j.kernel.impl.transaction.xaframework.XaTransaction.commit（XaTransaction.java:316）at org.neo4j.kernel.impl.transaction.xaframework.XaResourceManager.commit（XaResourceManager.java：oTransaction.java:443） 399）at org.neo4j.kernel.impl.transaction.xaframework.XaResourceHelpImpl.commit（XaResourceHelpImpl.java:64）at org.neo4j.kernel.impl.transaction.TransactionImpl.doCommit（TransactionImpl.java:514）at org.neo4j .kernel.impl.transaction.TxManager.commit（TxManager.java:571）at org.neo4j.kernel.impl.transaction.TxManager.commit（TxManager.java:543）at org.neo4j.kernel.impl.transaction.TransactionImpl .commit（TransactionImpl.java:102）at org.neo4j.kernel.EmbeddedGraphDbImpl $ TransactionImpl.finish（EmbeddedGraphDbImpl.java:329）at javaapplication2.Main.main（Main.java:62）28.05.2010 9:52:14 org .neo4j.kernel.impl.nioneo.store.PersistenceWindowPool logWarn警告：[neo4j-store-1M \ neostore.propertystore.db.strings]无法分配直接缓冲区“

伙计们！ 帮助我plzzz，我做错了什么，我怎么修复它？ 在平台上testingWindows XP 32bit SP3。 也许解决scheme创build自定义configuration？

thnx 4每个build议！