berkeleydb-java-edition exception: OutOfMemoryError: Java heap space

kampoo 2017-09-22 12:27:22

这个数据库估计很少人使用吧，我用了好几年，第一次在一个小的应用中遇到问题。后台网络插件，用来缓存数据的，提交后删除，所以库文件很小，通常不超过20MB，服务器内存8GB，常规内存使用率<50%，过去几个插件中都没出现过这个问题。异常消息如下：

FAIL to create cache cuased by (JE 6.4.9) JAVA_ERROR: Java Error occurred, recovery may not be possible.

com.sleepycat.je.EnvironmentFailureException: (JE 6.4.9) JAVA_ERROR: Java Error occurred, recovery may not be possible.

	at com.sleepycat.je.dbi.EnvironmentImpl.checkIfInvalid(EnvironmentImpl.java:1668)

	at com.sleepycat.je.dbi.DbEnvPool.getEnvironment(DbEnvPool.java:180)

	at com.sleepycat.je.Environment.makeEnvironmentImpl(Environment.java:287)

	at com.sleepycat.je.Environment.<init>(Environment.java:268)

	at com.sleepycat.je.Environment.<init>(Environment.java:212)

	at com.abel.bigwater.dao.BerkeleyPacketDao.initStore(BerkeleyPacketDao.java:81)

	at com.abel.bigwater.dao.BerkeleyPacketDao.cacheRtuLog(BerkeleyPacketDao.java:196)

	at com.abel.bigwater.dataserver.SeckServerHandler.cacheRtuLog(SeckServerHandler.java:459)

	at com.abel.bigwater.dataserver.SeckServerHandler.channelRead(SeckServerHandler.java:98)

	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:318)

	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:304)

	at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:276)

	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:263)

	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:318)

	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:304)

	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:846)

	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131)

	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511)

	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)

	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)

	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)

	at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:112)

	at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137)

	at java.lang.Thread.run(Unknown Source)

Caused by: java.lang.OutOfMemoryError: Java heap space

	at java.util.Arrays.copyOf(Unknown Source)

	at java.lang.AbstractStringBuilder.ensureCapacityInternal(Unknown Source)

	at java.lang.AbstractStringBuilder.append(Unknown Source)

	at java.lang.StringBuilder.append(Unknown Source)

	at com.sleepycat.je.txn.LockManager.getTimeoutInfoInternal(LockManager.java:696)

	at com.sleepycat.je.txn.SyncedLockManager.getTimeoutInfo(SyncedLockManager.java:134)

	at com.sleepycat.je.txn.LockManager.makeTimeoutException(LockManager.java:586)

	at com.sleepycat.je.txn.LockManager.lockInternal(LockManager.java:417)

	at com.sleepycat.je.txn.LockManager.lock(LockManager.java:295)

	at com.sleepycat.je.txn.BasicLocker.lockInternal(BasicLocker.java:154)

	at com.sleepycat.je.txn.Locker.lock(Locker.java:504)

	at com.sleepycat.je.dbi.CursorImpl.lockLN(CursorImpl.java:3551)

	at com.sleepycat.je.dbi.CursorImpl.lockLN(CursorImpl.java:3346)

	at com.sleepycat.je.dbi.CursorImpl.lockLNAndCheckDeleted(CursorImpl.java:2149)

	at com.sleepycat.je.dbi.CursorImpl.searchExact(CursorImpl.java:1964)

	at com.sleepycat.je.Cursor.searchExact(Cursor.java:3649)

	at com.sleepycat.je.Cursor.searchNoDups(Cursor.java:3514)

	at com.sleepycat.je.Cursor.search(Cursor.java:3335)

	at com.sleepycat.je.Cursor.getSearchKey(Cursor.java:1619)

	at com.sleepycat.persist.PrimaryIndex.put(PrimaryIndex.java:418)

	at com.sleepycat.persist.PrimaryIndex.put(PrimaryIndex.java:362)

// 自己的class