java.lang.OutOfMemoryError: Java heap space

问题描述：

2015-7-16 10:17:26 org.apache.tomcat.util.net.NioEndpoint$Poller run严重: java.lang.OutOfMemoryError: Java heap spaceat java.util.HashMap.newKeyIterator(HashMap.java:840)at java.util.HashMap$KeySet.iterator(HashMap.java:874)at java.util.HashSet.iterator(HashSet.java:153)at java.util.Collections$UnmodifiableCollection$1.<init>(Collections.java:1007)at java.util.Collections$UnmodifiableCollection.iterator(Collections.java:1006)at org.apache.tomcat.util.net.NioEndpoint$Poller.timeout(NioEndpoint.java:1651)at org.apache.tomcat.util.net.NioEndpoint$Poller.run(NioEndpoint.java:1512)at java.lang.Thread.run(Thread.java:619)2015-7-16 10:17:26 org.apache.tomcat.util.net.NioBlockingSelector$BlockPoller run严重: java.lang.OutOfMemoryError: Java heap spaceat java.util.HashMap.newKeyIterator(HashMap.java:840)at java.util.HashMap$KeySet.iterator(HashMap.java:874)at java.util.HashSet.iterator(HashSet.java:153)at sun.nio.ch.SelectorImpl.processDeregisterQueue(SelectorImpl.java:127)at sun.nio.ch.WindowsSelectorImpl.doSelect(WindowsSelectorImpl.java:120)at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:69)at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:80)at org.apache.tomcat.util.net.NioBlockingSelector$BlockPoller.run(NioBlockingSelector.java:305)10:17:26.064 ERROR org.hibernate.search.backend.impl.lucene.PerDPQueueProcessor - Unexpected error in Lucene Backend: java.lang.OutOfMemoryError: Java heap spaceat java.util.HashMap.addEntry(HashMap.java:753) ~[na:1.6.0_10-rc2]at java.util.HashMap.put(HashMap.java:385) ~[na:1.6.0_10-rc2]at org.wltea.analyzer.dic.DictSegment.lookforSegment(DictSegment.java:242) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.dic.DictSegment.fillSegment(DictSegment.java:176) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.dic.DictSegment.fillSegment(DictSegment.java:180) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.dic.DictSegment.fillSegment(DictSegment.java:156) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.dic.Dictionary.loadMainDict(Dictionary.java:98) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.dic.Dictionary.<init>(Dictionary.java:72) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.dic.Dictionary.<clinit>(Dictionary.java:42) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.cfg.Configuration.loadSegmenter(Configuration.java:110) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.IKSegmentation.<init>(IKSegmentation.java:54) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.lucene.IKTokenizer.<init>(IKTokenizer.java:44) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.lucene.IKAnalyzer.tokenStream(IKAnalyzer.java:45) ~[IKAnalyzer-3.2.8.jar:na]at org.hibernate.search.util.ScopedAnalyzer.tokenStream(ScopedAnalyzer.java:63) ~[hibernate-search-3.4.2.jar:3.4.2.Final]at org.apache.lucene.analysis.Analyzer.reusableTokenStream(Analyzer.java:80) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.DocInverterPerField.processFields(DocInverterPerField.java:126) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.DocFieldProcessorPerThread.processDocument(DocFieldProcessorPerThread.java:278) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:766) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:2066) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.hibernate.search.backend.impl.lucene.works.AddWorkDelegate.performWork(AddWorkDelegate.java:76) ~[hibernate-search-3.4.2.jar:3.4.2.Final]at org.hibernate.search.backend.impl.lucene.PerDPQueueProcessor.run(PerDPQueueProcessor.java:106) ~[hibernate-search-3.4.2.jar:3.4.2.Final]at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) [na:1.6.0_10-rc2]at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) [na:1.6.0_10-rc2]at java.util.concurrent.FutureTask.run(FutureTask.java:138) [na:1.6.0_10-rc2]at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [na:1.6.0_10-rc2]at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [na:1.6.0_10-rc2]at java.lang.Thread.run(Thread.java:619) [na:1.6.0_10-rc2]10:17:26.075 ERROR org.hibernate.search.exception.impl.LogErrorHandler - Exception occurred java.lang.OutOfMemoryError: Java heap spacePrimary Failure:Entity com.sencloud.entity.Product  Id 4624  Work Type  org.hibernate.search.backend.AddLuceneWorkjava.lang.OutOfMemoryError: Java heap spaceat java.util.HashMap.addEntry(HashMap.java:753) ~[na:1.6.0_10-rc2]at java.util.HashMap.put(HashMap.java:385) ~[na:1.6.0_10-rc2]at org.wltea.analyzer.dic.DictSegment.lookforSegment(DictSegment.java:242) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.dic.DictSegment.fillSegment(DictSegment.java:176) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.dic.DictSegment.fillSegment(DictSegment.java:180) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.dic.DictSegment.fillSegment(DictSegment.java:156) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.dic.Dictionary.loadMainDict(Dictionary.java:98) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.dic.Dictionary.<init>(Dictionary.java:72) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.dic.Dictionary.<clinit>(Dictionary.java:42) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.cfg.Configuration.loadSegmenter(Configuration.java:110) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.IKSegmentation.<init>(IKSegmentation.java:54) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.lucene.IKTokenizer.<init>(IKTokenizer.java:44) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.lucene.IKAnalyzer.tokenStream(IKAnalyzer.java:45) ~[IKAnalyzer-3.2.8.jar:na]at org.hibernate.search.util.ScopedAnalyzer.tokenStream(ScopedAnalyzer.java:63) ~[hibernate-search-3.4.2.jar:3.4.2.Final]at org.apache.lucene.analysis.Analyzer.reusableTokenStream(Analyzer.java:80) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.DocInverterPerField.processFields(DocInverterPerField.java:126) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.DocFieldProcessorPerThread.processDocument(DocFieldProcessorPerThread.java:278) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:766) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:2066) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.hibernate.search.backend.impl.lucene.works.AddWorkDelegate.performWork(AddWorkDelegate.java:76) ~[hibernate-search-3.4.2.jar:3.4.2.Final]at org.hibernate.search.backend.impl.lucene.PerDPQueueProcessor.run(PerDPQueueProcessor.java:106) ~[hibernate-search-3.4.2.jar:3.4.2.Final]at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) [na:1.6.0_10-rc2]at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) [na:1.6.0_10-rc2]at java.util.concurrent.FutureTask.run(FutureTask.java:138) [na:1.6.0_10-rc2]at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [na:1.6.0_10-rc2]at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [na:1.6.0_10-rc2]at java.lang.Thread.run(Thread.java:619) [na:1.6.0_10-rc2]10:19:43.076 ERROR org.hibernate.search.backend.impl.lucene.PerDPQueueProcessor - Unexpected error in Lucene Backend: java.lang.NoClassDefFoundError: Could not initialize class org.wltea.analyzer.dic.Dictionaryat org.wltea.analyzer.cfg.Configuration.loadSegmenter(Configuration.java:110) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.IKSegmentation.<init>(IKSegmentation.java:54) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.lucene.IKTokenizer.<init>(IKTokenizer.java:44) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.lucene.IKAnalyzer.tokenStream(IKAnalyzer.java:45) ~[IKAnalyzer-3.2.8.jar:na]at org.hibernate.search.util.ScopedAnalyzer.tokenStream(ScopedAnalyzer.java:63) ~[hibernate-search-3.4.2.jar:3.4.2.Final]at org.apache.lucene.analysis.Analyzer.reusableTokenStream(Analyzer.java:80) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.DocInverterPerField.processFields(DocInverterPerField.java:126) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.DocFieldProcessorPerThread.processDocument(DocFieldProcessorPerThread.java:278) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:766) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:2066) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.hibernate.search.backend.impl.lucene.works.AddWorkDelegate.performWork(AddWorkDelegate.java:76) ~[hibernate-search-3.4.2.jar:3.4.2.Final]at org.hibernate.search.backend.impl.lucene.PerDPQueueProcessor.run(PerDPQueueProcessor.java:106) ~[hibernate-search-3.4.2.jar:3.4.2.Final]at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) [na:1.6.0_10-rc2]at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) [na:1.6.0_10-rc2]at java.util.concurrent.FutureTask.run(FutureTask.java:138) [na:1.6.0_10-rc2]at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [na:1.6.0_10-rc2]at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [na:1.6.0_10-rc2]at java.lang.Thread.run(Thread.java:619) [na:1.6.0_10-rc2]10:19:43.328 ERROR org.hibernate.search.exception.impl.LogErrorHandler - Exception occurred java.lang.NoClassDefFoundError: Could not initialize class org.wltea.analyzer.dic.DictionaryPrimary Failure:Entity com.sencloud.entity.Product  Id 4624  Work Type  org.hibernate.search.backend.AddLuceneWorkjava.lang.NoClassDefFoundError: Could not initialize class org.wltea.analyzer.dic.Dictionaryat org.wltea.analyzer.cfg.Configuration.loadSegmenter(Configuration.java:110) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.IKSegmentation.<init>(IKSegmentation.java:54) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.lucene.IKTokenizer.<init>(IKTokenizer.java:44) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.lucene.IKAnalyzer.tokenStream(IKAnalyzer.java:45) ~[IKAnalyzer-3.2.8.jar:na]at org.hibernate.search.util.ScopedAnalyzer.tokenStream(ScopedAnalyzer.java:63) ~[hibernate-search-3.4.2.jar:3.4.2.Final]at org.apache.lucene.analysis.Analyzer.reusableTokenStream(Analyzer.java:80) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.DocInverterPerField.processFields(DocInverterPerField.java:126) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.DocFieldProcessorPerThread.processDocument(DocFieldProcessorPerThread.java:278) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:766) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:2066) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.hibernate.search.backend.impl.lucene.works.AddWorkDelegate.performWork(AddWorkDelegate.java:76) ~[hibernate-search-3.4.2.jar:3.4.2.Final]at org.hibernate.search.backend.impl.lucene.PerDPQueueProcessor.run(PerDPQueueProcessor.java:106) ~[hibernate-search-3.4.2.jar:3.4.2.Final]at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) [na:1.6.0_10-rc2]at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) [na:1.6.0_10-rc2]at java.util.concurrent.FutureTask.run(FutureTask.java:138) [na:1.6.0_10-rc2]at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [na:1.6.0_10-rc2]at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [na:1.6.0_10-rc2]at java.lang.Thread.run(Thread.java:619) [na:1.6.0_10-rc2]10:20:54.272 ERROR org.hibernate.search.backend.impl.lucene.PerDPQueueProcessor - Unexpected error in Lucene Backend: java.lang.NoClassDefFoundError: Could not initialize class org.wltea.analyzer.dic.Dictionaryat org.wltea.analyzer.cfg.Configuration.loadSegmenter(Configuration.java:110) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.IKSegmentation.<init>(IKSegmentation.java:54) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.lucene.IKTokenizer.<init>(IKTokenizer.java:44) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.lucene.IKAnalyzer.tokenStream(IKAnalyzer.java:45) ~[IKAnalyzer-3.2.8.jar:na]at org.hibernate.search.util.ScopedAnalyzer.tokenStream(ScopedAnalyzer.java:63) ~[hibernate-search-3.4.2.jar:3.4.2.Final]at org.apache.lucene.analysis.Analyzer.reusableTokenStream(Analyzer.java:80) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.DocInverterPerField.processFields(DocInverterPerField.java:126) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.DocFieldProcessorPerThread.processDocument(DocFieldProcessorPerThread.java:278) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:766) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:2066) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.hibernate.search.backend.impl.lucene.works.AddWorkDelegate.performWork(AddWorkDelegate.java:76) ~[hibernate-search-3.4.2.jar:3.4.2.Final]at org.hibernate.search.backend.impl.lucene.PerDPQueueProcessor.run(PerDPQueueProcessor.java:106) ~[hibernate-search-3.4.2.jar:3.4.2.Final]at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) [na:1.6.0_10-rc2]at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) [na:1.6.0_10-rc2]at java.util.concurrent.FutureTask.run(FutureTask.java:138) [na:1.6.0_10-rc2]at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [na:1.6.0_10-rc2]at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [na:1.6.0_10-rc2]at java.lang.Thread.run(Thread.java:619) [na:1.6.0_10-rc2]10:20:54.280 ERROR org.hibernate.search.exception.impl.LogErrorHandler - Exception occurred java.lang.NoClassDefFoundError: Could not initialize class org.wltea.analyzer.dic.DictionaryPrimary Failure:Entity com.sencloud.entity.Product  Id 4624  Work Type  org.hibernate.search.backend.AddLuceneWorkjava.lang.NoClassDefFoundError: Could not initialize class org.wltea.analyzer.dic.Dictionaryat org.wltea.analyzer.cfg.Configuration.loadSegmenter(Configuration.java:110) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.IKSegmentation.<init>(IKSegmentation.java:54) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.lucene.IKTokenizer.<init>(IKTokenizer.java:44) ~[IKAnalyzer-3.2.8.jar:na]at org.wltea.analyzer.lucene.IKAnalyzer.tokenStream(IKAnalyzer.java:45) ~[IKAnalyzer-3.2.8.jar:na]at org.hibernate.search.util.ScopedAnalyzer.tokenStream(ScopedAnalyzer.java:63) ~[hibernate-search-3.4.2.jar:3.4.2.Final]at org.apache.lucene.analysis.Analyzer.reusableTokenStream(Analyzer.java:80) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.DocInverterPerField.processFields(DocInverterPerField.java:126) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.DocFieldProcessorPerThread.processDocument(DocFieldProcessorPerThread.java:278) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:766) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:2066) ~[lucene-3.5.0.jar:3.5.0 1204988 - simon - 2011-11-22 14:46:51]at org.hibernate.search.backend.impl.lucene.works.AddWorkDelegate.performWork(AddWorkDelegate.java:76) ~[hibernate-search-3.4.2.jar:3.4.2.Final]at org.hibernate.search.backend.impl.lucene.PerDPQueueProcessor.run(PerDPQueueProcessor.java:106) ~[hibernate-search-3.4.2.jar:3.4.2.Final]at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) [na:1.6.0_10-rc2]at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) [na:1.6.0_10-rc2]at java.util.concurrent.FutureTask.run(FutureTask.java:138) [na:1.6.0_10-rc2]at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [na:1.6.0_10-rc2]at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [na:1.6.0_10-rc2]at java.lang.Thread.run(Thread.java:619) [na:1.6.0_10-rc2]

解决方案：

1 查看内存:workspace/.metadata/.plugins/org.eclipse.core.runtime/.settings/org.eclipse.ui.prefs，在里面加上SHOW_MEMORY_MONITOR=true，重启eclipse，就可以在其左下角看到内存使用情况。2 修改内存:方法一：找到eclipse/eclipse.ini，打开，在其上加上-vmargs-Xms128m-Xmx512m-XX：permSize=64M-XX：MaxPermSize=128M方法二：打开eclipse，选择Window--Preferences--Java--Installed JREs，在右边选择前面有对勾的JRE，单击Edit，出现一个EditJRE的对话框，在其中的Default VM Arguments框中输入-Xms128m -Xmx512m。这样设置java虚拟机内存使用最小是128M，最大是512M。