What to do with OutOfMemory error?

[nm_santos]

Hi,

How much memory should alfresco normally use?

I'm running alfresco 4.0 on a computer with 4gb of memory.

I created two amps, and a client that interacts with the web service api.

When I send a file, small sized (< 1MB), alfresco takes a longe time to process it, and the document library browsing is slow.

The error I get is

 Exception in thread "SolrTrackerScheduler_QuartzSchedulerThread" java.lang.OutOfMemoryError: GC overhead limit exceeded
2012-07-05 15:57:06,194  ERROR [extensions.webscripts.AbstractRuntime] [http-8080-3] Exception from executeScript - redirecting to status template error: 06050016 Exception in Transaction.
 2012-07-05 15:57:32,638  WARN  [post.lookup.PostLookup] [DefaultScheduler_Worker-5] Still busy …
 Exception in thread "JobAcquisitionThread" Exception in thread "DefaultScheduler_QuartzSchedulerThread"    at java.util.TreeMap.put(TreeMap.java:554)
   at java.util.TreeSet.add(TreeSet.java:238)
   at org.quartz.CronExpression.addToSet(CronExpression.java:1008)
   at org.quartz.CronExpression.storeExpressionVals(CronExpression.java:571)
   at org.quartz.CronExpression.buildExpression(CronExpression.java:430)
   at org.quartz.CronExpression.<init>(CronExpression.java:255)
   at org.quartz.CronExpression.clone(CronExpression.java:1571)
   at org.quartz.CronTrigger.clone(CronTrigger.java:464)
   at org.quartz.simpl.RAMJobStore.applyMisfire(RAMJobStore.java:1194)
   at org.quartz.simpl.RAMJobStore.acquireNextTrigger(RAMJobStore.java:1249)
   at org.quartz.core.QuartzSchedulerThread.run(QuartzSchedulerThread.java:264)
java.lang.OutOfMemoryError: GC overhead limit exceeded
2012-07-05 15:58:12,154  ERROR [extensions.webscripts.AbstractRuntime] [http-8443-2] Exception from executeScript - redirecting to status template error: 06050013 Wrapped Exception (with status template): GC overhead limit exceeded
 org.springframework.extensions.webscripts.WebScriptException: 06050013 Wrapped Exception (with status template): GC overhead limit exceeded
   at org.springframework.extensions.webscripts.AbstractWebScript.createStatusException(AbstractWebScript.java:970)
   at org.springframework.extensions.webscripts.DeclarativeWebScript.execute(DeclarativeWebScript.java:171)
   at org.alfresco.repo.web.scripts.RepositoryContainer$2.execute(RepositoryContainer.java:393)
   at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:388)
   at org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecute(RepositoryContainer.java:462)
   at org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecuteAs(RepositoryContainer.java:500)
   at org.alfresco.repo.web.scripts.RepositoryContainer.executeScript(RepositoryContainer.java:275)
   at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:372)
   at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:209)
   at org.springframework.extensions.webscripts.servlet.WebScriptServlet.service(WebScriptServlet.java:118)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.alfresco.web.app.servlet.GlobalLocalizationFilter.doFilter(GlobalLocalizationFilter.java:58)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:563)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
   at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
   at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
   at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
   at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.OutOfMemoryError: GC overhead limit exceeded
java.lang.OutOfMemoryError: GC overhead limit exceeded
   at java.lang.ThreadLocal$ThreadLocalMap.set(ThreadLocal.java:424)
   at java.lang.ThreadLocal$ThreadLocalMap.access$100(ThreadLocal.java:242)
   at java.lang.ThreadLocal.setInitialValue(ThreadLocal.java:145)
   at java.lang.ThreadLocal.get(ThreadLocal.java:131)
   at org.apache.ibatis.executor.ErrorContext.instance(ErrorContext.java:20)
   at org.apache.ibatis.session.defaults.DefaultSqlSessionFactory.openSessionFromDataSource(DefaultSqlSessionFactory.java:83)
   at org.apache.ibatis.session.defaults.DefaultSqlSessionFactory.openSession(DefaultSqlSessionFactory.java:32)
   at org.activiti.engine.impl.db.DbSqlSession.<init>(DbSqlSession.java:86)
   at org.activiti.engine.impl.db.DbSqlSessionFactory.openSession(DbSqlSessionFactory.java:77)
   at org.activiti.engine.impl.interceptor.CommandContext.getSession(CommandContext.java:177)
   at org.activiti.engine.impl.persistence.AbstractManager.getSession(AbstractManager.java:56)
   at org.activiti.engine.impl.persistence.AbstractManager.getDbSqlSession(AbstractManager.java:52)
   at org.activiti.engine.impl.persistence.entity.JobManager.findNextJobsToExecute(JobManager.java:97)
   at org.activiti.engine.impl.cmd.AcquireJobsCmd.execute(AcquireJobsCmd.java:49)
   at org.activiti.engine.impl.cmd.AcquireJobsCmd.execute(AcquireJobsCmd.java:32)
   at org.activiti.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:24)
   at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:42)
   at org.activiti.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:42)
   at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:130)
   at org.activiti.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:40)
   at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33)
   at org.activiti.engine.impl.jobexecutor.JobAcquisitionThread.run(JobAcquisitionThread.java:63)
2012-07-05 15:58:12,221  INFO  [webscripts.connector.RemoteClient] [http-8080-1] Error status 499 Read timed out
 java.net.SocketTimeoutException: Read timed out
   at java.net.SocketInputStream.socketRead0(Native Method)
   at java.net.SocketInputStream.read(SocketInputStream.java:129)
   at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
   at java.io.BufferedInputStream.read(BufferedInputStream.java:237)
   at org.apache.commons.httpclient.HttpParser.readRawLine(HttpParser.java:78)
   at org.apache.commons.httpclient.HttpParser.readLine(HttpParser.java:106)
   at org.apache.commons.httpclient.HttpConnection.readLine(HttpConnection.java:1116)
   at org.apache.commons.httpclient.HttpMethodBase.readStatusLine(HttpMethodBase.java:1973)
   at org.apache.commons.httpclient.HttpMethodBase.readResponse(HttpMethodBase.java:1735)
   at org.apache.commons.httpclient.HttpMethodBase.execute(HttpMethodBase.java:1098)
   at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:398)
   at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
   at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
   at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:323)
   at org.springframework.extensions.webscripts.connector.RemoteClient.service(RemoteClient.java:966)
   at org.springframework.extensions.webscripts.connector.RemoteClient.service(RemoteClient.java:750)
   at org.springframework.extensions.webscripts.connector.RemoteClient.call(RemoteClient.java:498)
   at org.springframework.extensions.webscripts.connector.RemoteClient.call(RemoteClient.java:432)
   at org.springframework.extensions.webscripts.connector.HttpConnector.call(HttpConnector.java:70)
   at org.springframework.extensions.webscripts.RequestCachingConnector.call(RequestCachingConnector.java:88)
   at org.springframework.extensions.webscripts.connector.AuthenticatingConnector.call(AuthenticatingConnector.java:136)
   at org.springframework.extensions.webscripts.ScriptRemoteConnector.call(ScriptRemoteConnector.java:95)
   at org.springframework.extensions.webscripts.ScriptRemote.call(ScriptRemote.java:184)
   at sun.reflect.GeneratedMethodAccessor563.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at org.mozilla.javascript.MemberBox.invoke(MemberBox.java:155)
   at org.mozilla.javascript.NativeJavaMethod.call(NativeJavaMethod.java:243)
   at org.mozilla.javascript.optimizer.OptRuntime.call1(OptRuntime.java:66)
   at org.mozilla.javascript.gen.c14._c20(file:/D:/Alfresco/tomcat/webapps/share/WEB-INF/classes/alfresco/site-webscripts/org/alfresco/components/documentlibrary/data/surf-doclist.get.js:832)
   at org.mozilla.javascript.gen.c14.call(file:/D:/Alfresco/tomcat/webapps/share/WEB-INF/classes/alfresco/site-webscripts/org/alfresco/components/documentlibrary/data/surf-doclist.get.js)
   at org.mozilla.javascript.optimizer.OptRuntime.callName0(OptRuntime.java:108)
   at org.mozilla.javascript.gen.c14._c0(file:/D:/Alfresco/tomcat/webapps/share/WEB-INF/classes/alfresco/site-webscripts/org/alfresco/components/documentlibrary/data/surf-doclist.get.js:854)
   at org.mozilla.javascript.gen.c14.call(file:/D:/Alfresco/tomcat/webapps/share/WEB-INF/classes/alfresco/site-webscripts/org/alfresco/components/documentlibrary/data/surf-doclist.get.js)
   at org.mozilla.javascript.ContextFactory.doTopCall(ContextFactory.java:393)
   at org.mozilla.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:2834)
   at org.mozilla.javascript.gen.c14.call(file:/D:/Alfresco/tomcat/webapps/share/WEB-INF/classes/alfresco/site-webscripts/org/alfresco/components/documentlibrary/data/surf-doclist.get.js)
   at org.mozilla.javascript.gen.c14.exec(file:/D:/Alfresco/tomcat/webapps/share/WEB-INF/classes/alfresco/site-webscripts/org/alfresco/components/documentlibrary/data/surf-doclist.get.js)
   at org.springframework.extensions.webscripts.processor.JSScriptProcessor.executeScriptImpl(JSScriptProcessor.java:318)
   at org.springframework.extensions.webscripts.processor.JSScriptProcessor.executeScript(JSScriptProcessor.java:192)
   at org.springframework.extensions.webscripts.AbstractWebScript.executeScript(AbstractWebScript.java:1193)
   at org.springframework.extensions.webscripts.DeclarativeWebScript.execute(DeclarativeWebScript.java:86)
   at org.springframework.extensions.webscripts.PresentationContainer.executeScript(PresentationContainer.java:70)
   at org.springframework.extensions.webscripts.LocalWebScriptRuntimeContainer.executeScript(LocalWebScriptRuntimeContainer.java:239)
   at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:372)
   at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:209)
   at org.springframework.extensions.webscripts.servlet.mvc.WebScriptView.renderMergedOutputModel(WebScriptView.java:99)
   at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
   at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1047)
   at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:817)
   at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
   at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
   at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
   at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
   at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
   at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
   at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:195)
   at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:159)
   at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:141)
   at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:90)
   at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:417)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:470)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
   at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:861)
   at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
   at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1584)
   at java.lang.Thread.run(Thread.java:662)
2012-07-05 15:58:12,335  ERROR [activities.feed.AbstractFeedGenerator] [DefaultScheduler_Worker-9] Exception during generation of feeds
 java.lang.IllegalStateException: lockToken is not null
   at org.alfresco.repo.activities.feed.AbstractFeedGenerator$LockTracker.refreshLock(AbstractFeedGenerator.java:231)
   at org.alfresco.repo.activities.feed.AbstractFeedGenerator.acquireLock(AbstractFeedGenerator.java:210)
   at org.alfresco.repo.activities.feed.AbstractFeedGenerator.execute(AbstractFeedGenerator.java:161)
   at org.alfresco.repo.activities.feed.FeedGeneratorJob.execute(FeedGeneratorJob.java:50)
   at org.quartz.core.JobRunShell.run(JobRunShell.java:216)
   at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:563)
2012-07-05 15:58:12,450  ERROR [quartz.core.JobRunShell] [DefaultScheduler_Worker-6] Job DEFAULT.feedGeneratorJobDetail threw an unhandled Exception: 
 org.alfresco.repo.lock.LockAcquisitionException: 06050018 Failed to release lock '{http://www.alfresco.org/model/system/1.0}activityfeedgenerator' using token '2fcea96a-0c93-43bd-81df-41f70e62a569'.  The lock has expired and been taken by another process.
   at org.alfresco.repo.domain.locks.AbstractLockDAOImpl.updateLocks(AbstractLockDAOImpl.java:218)
   at org.alfresco.repo.domain.locks.AbstractLockDAOImpl.releaseLock(AbstractLockDAOImpl.java:172)
   at org.alfresco.repo.lock.JobLockServiceImpl$3.execute(JobLockServiceImpl.java:428)
   at org.alfresco.repo.lock.JobLockServiceImpl$3.execute(JobLockServiceImpl.java:425)
   at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:388)
   at org.alfresco.repo.lock.JobLockServiceImpl.releaseLock(JobLockServiceImpl.java:432)
   at org.alfresco.repo.activities.feed.AbstractFeedGenerator$LockTracker.releaseLock(AbstractFeedGenerator.java:241)
   at org.alfresco.repo.activities.feed.AbstractFeedGenerator.releaseLock(AbstractFeedGenerator.java:220)
   at org.alfresco.repo.activities.feed.AbstractFeedGenerator.execute(AbstractFeedGenerator.java:198)
   at org.alfresco.repo.activities.feed.FeedGeneratorJob.execute(FeedGeneratorJob.java:50)
   at org.quartz.core.JobRunShell.run(JobRunShell.java:216)
   at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:563)
2012-07-05 15:58:12,450  ERROR [quartz.core.JobRunShell] [DefaultScheduler_Worker-9] Job DEFAULT.feedGeneratorJobDetail threw an unhandled Exception: 
 org.alfresco.repo.lock.LockAcquisitionException: 06050019 Failed to release lock '{http://www.alfresco.org/model/system/1.0}activityfeedgenerator' using token '2fcea96a-0c93-43bd-81df-41f70e62a569'.  The lock has expired and been taken by another process.
   at org.alfresco.repo.domain.locks.AbstractLockDAOImpl.updateLocks(AbstractLockDAOImpl.java:218)
   at org.alfresco.repo.domain.locks.AbstractLockDAOImpl.releaseLock(AbstractLockDAOImpl.java:172)
   at org.alfresco.repo.lock.JobLockServiceImpl$3.execute(JobLockServiceImpl.java:428)
   at org.alfresco.repo.lock.JobLockServiceImpl$3.execute(JobLockServiceImpl.java:425)
   at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:388)
   at org.alfresco.repo.lock.JobLockServiceImpl.releaseLock(JobLockServiceImpl.java:432)
   at org.alfresco.repo.activities.feed.AbstractFeedGenerator$LockTracker.releaseLock(AbstractFeedGenerator.java:241)
   at org.alfresco.repo.activities.feed.AbstractFeedGenerator.releaseLock(AbstractFeedGenerator.java:220)
   at org.alfresco.repo.activities.feed.AbstractFeedGenerator.execute(AbstractFeedGenerator.java:198)
   at org.alfresco.repo.activities.feed.FeedGeneratorJob.execute(FeedGeneratorJob.java:50)
   at org.quartz.core.JobRunShell.run(JobRunShell.java:216)
   at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:563)
2012-07-05 15:58:12,461  ERROR [quartz.core.ErrorLogger] [DefaultScheduler_Worker-6] Job (DEFAULT.feedGeneratorJobDetail threw an exception.
 org.quartz.SchedulerException: Job threw an unhandled exception. [See nested exception: org.alfresco.repo.lock.LockAcquisitionException: 06050018 Failed to release lock '{http://www.alfresco.org/model/system/1.0}activityfeedgenerator' using token '2fcea96a-0c93-43bd-81df-41f70e62a569'.  The lock has expired and been taken by another process.]
   at org.quartz.core.JobRunShell.run(JobRunShell.java:227)
   at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:563)
Caused by: org.alfresco.repo.lock.LockAcquisitionException: 06050018 Failed to release lock '{http://www.alfresco.org/model/system/1.0}activityfeedgenerator' using token '2fcea96a-0c93-43bd-81df-41f70e62a569'.  The lock has expired and been taken by another process.
   at org.alfresco.repo.domain.locks.AbstractLockDAOImpl.updateLocks(AbstractLockDAOImpl.java:218)
   at org.alfresco.repo.domain.locks.AbstractLockDAOImpl.releaseLock(AbstractLockDAOImpl.java:172)
   at org.alfresco.repo.lock.JobLockServiceImpl$3.execute(JobLockServiceImpl.java:428)
   at org.alfresco.repo.lock.JobLockServiceImpl$3.execute(JobLockServiceImpl.java:425)
   at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:388)
   at org.alfresco.repo.lock.JobLockServiceImpl.releaseLock(JobLockServiceImpl.java:432)
   at org.alfresco.repo.activities.feed.AbstractFeedGenerator$LockTracker.releaseLock(AbstractFeedGenerator.java:241)
   at org.alfresco.repo.activities.feed.AbstractFeedGenerator.releaseLock(AbstractFeedGenerator.java:220)
   at org.alfresco.repo.activities.feed.AbstractFeedGenerator.execute(AbstractFeedGenerator.java:198)
   at org.alfresco.repo.activities.feed.FeedGeneratorJob.execute(FeedGeneratorJob.java:50)
   at org.quartz.core.JobRunShell.run(JobRunShell.java:216)
   … 1 more
2012-07-05 15:58:12,463  ERROR [quartz.core.ErrorLogger] [DefaultScheduler_Worker-9] Job (DEFAULT.feedGeneratorJobDetail threw an exception.
 org.quartz.SchedulerException: Job threw an unhandled exception. [See nested exception: org.alfresco.repo.lock.LockAcquisitionException: 06050019 Failed to release lock '{http://www.alfresco.org/model/system/1.0}activityfeedgenerator' using token '2fcea96a-0c93-43bd-81df-41f70e62a569'.  The lock has expired and been taken by another process.]
   at org.quartz.core.JobRunShell.run(JobRunShell.java:227)
   at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:563)
Caused by: org.alfresco.repo.lock.LockAcquisitionException: 06050019 Failed to release lock '{http://www.alfresco.org/model/system/1.0}activityfeedgenerator' using token '2fcea96a-0c93-43bd-81df-41f70e62a569'.  The lock has expired and been taken by another process.
   at org.alfresco.repo.domain.locks.AbstractLockDAOImpl.updateLocks(AbstractLockDAOImpl.java:218)
   at org.alfresco.repo.domain.locks.AbstractLockDAOImpl.releaseLock(AbstractLockDAOImpl.java:172)
   at org.alfresco.repo.lock.JobLockServiceImpl$3.execute(JobLockServiceImpl.java:428)
   at org.alfresco.repo.lock.JobLockServiceImpl$3.execute(JobLockServiceImpl.java:425)
   at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:388)
   at org.alfresco.repo.lock.JobLockServiceImpl.releaseLock(JobLockServiceImpl.java:432)
   at org.alfresco.repo.activities.feed.AbstractFeedGenerator$LockTracker.releaseLock(AbstractFeedGenerator.java:241)
   at org.alfresco.repo.activities.feed.AbstractFeedGenerator.releaseLock(AbstractFeedGenerator.java:220)
   at org.alfresco.repo.activities.feed.AbstractFeedGenerator.execute(AbstractFeedGenerator.java:198)
   at org.alfresco.repo.activities.feed.FeedGeneratorJob.execute(FeedGeneratorJob.java:50)
   at org.quartz.core.JobRunShell.run(JobRunShell.java:216)
   … 1 more
2012-07-05 15:58:12,984  ERROR [quartz.core.JobRunShell] [DefaultScheduler_Worker-7] Job DEFAULT.feedGeneratorJobDetail threw an unhandled Exception: 
 org.alfresco.repo.lock.LockAcquisitionException: 06050030 Failed to release lock '{http://www.alfresco.org/model/system/1.0}activityfeedgenerator' using token '2fcea96a-0c93-43bd-81df-41f70e62a569'.  The lock has expired and been taken by another process.
   at org.alfresco.repo.domain.locks.AbstractLockDAOImpl.updateLocks(AbstractLockDAOImpl.java:218)
   at org.alfresco.repo.domain.locks.AbstractLockDAOImpl.releaseLock(AbstractLockDAOImpl.java:172)
   at org.alfresco.repo.lock.JobLockServiceImpl$3.execute(JobLockServiceImpl.java:428)
   at org.alfresco.repo.lock.JobLockServiceImpl$3.execute(JobLockServiceImpl.java:425)
   at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:388)
   at org.alfresco.repo.lock.JobLockServiceImpl.releaseLock(JobLockServiceImpl.java:432)
   at org.alfresco.repo.activities.feed.AbstractFeedGenerator$LockTracker.releaseLock(AbstractFeedGenerator.java:241)
   at org.alfresco.repo.activities.feed.AbstractFeedGenerator.releaseLock(AbstractFeedGenerator.java:220)
   at org.alfresco.repo.activities.feed.AbstractFeedGenerator.execute(AbstractFeedGenerator.java:198)
   at org.alfresco.repo.activities.feed.FeedGeneratorJob.execute(FeedGeneratorJob.java:50)
   at org.quartz.core.JobRunShell.run(JobRunShell.java:216)
   at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:563)
2012-07-05 15:58:12,984  ERROR [quartz.core.ErrorLogger] [DefaultScheduler_Worker-7] Job (DEFAULT.feedGeneratorJobDetail threw an exception.
 org.quartz.SchedulerException: Job threw an unhandled exception. [See nested exception: org.alfresco.repo.lock.LockAcquisitionException: 06050030 Failed to release lock '{http://www.alfresco.org/model/system/1.0}activityfeedgenerator' using token '2fcea96a-0c93-43bd-81df-41f70e62a569'.  The lock has expired and been taken by another process.]
   at org.quartz.core.JobRunShell.run(JobRunShell.java:227)
   at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:563)
Caused by: org.alfresco.repo.lock.LockAcquisitionException: 06050030 Failed to release lock '{http://www.alfresco.org/model/system/1.0}activityfeedgenerator' using token '2fcea96a-0c93-43bd-81df-41f70e62a569'.  The lock has expired and been taken by another process.
   at org.alfresco.repo.domain.locks.AbstractLockDAOImpl.updateLocks(AbstractLockDAOImpl.java:218)
   at org.alfresco.repo.domain.locks.AbstractLockDAOImpl.releaseLock(AbstractLockDAOImpl.java:172)
   at org.alfresco.repo.lock.JobLockServiceImpl$3.execute(JobLockServiceImpl.java:428)
   at org.alfresco.repo.lock.JobLockServiceImpl$3.execute(JobLockServiceImpl.java:425)
   at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:388)
   at org.alfresco.repo.lock.JobLockServiceImpl.releaseLock(JobLockServiceImpl.java:432)
   at org.alfresco.repo.activities.feed.AbstractFeedGenerator$LockTracker.releaseLock(AbstractFeedGenerator.java:241)
   at org.alfresco.repo.activities.feed.AbstractFeedGenerator.releaseLock(AbstractFeedGenerator.java:220)
   at org.alfresco.repo.activities.feed.AbstractFeedGenerator.execute(AbstractFeedGenerator.java:198)
   at org.alfresco.repo.activities.feed.FeedGeneratorJob.execute(FeedGeneratorJob.java:50)
   at org.quartz.core.JobRunShell.run(JobRunShell.java:216)
   … 1 more‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Also, when watching it on Task Manager, it never exceeds 960mb.

What should I do?

Allocate more memory to it?

This error always happens when I try to overwrite a file, i.e. upload a new file version to alfresco.

[mrogers]

What are your java memory settings?   

Assuming you are only allocating 1 GB - give it more.   The "rule of thumb" is that you should be giving Alfresco at least 4GB, so it may struggle to run on your computer.

[nm_santos]

Well,

I have already java installed on my computer, but alfresco also comes with a java installation, am I correct?

In my java installation, I don't have any parameters about allocating memory, so I assume it is the default.

[scouil]

Then you might want to have a look at:
https://wiki.alfresco.com/wiki/JVM_Tuning

The memory estimations are from quite old versions of Alfresco so you might want to dedicate more memory than indicated. However this wiki page will help you understand the different options you have.

[nm_santos]

What are your java memory settings?   

Assuming you are only allocating 1 GB - give it more.   The "rule of thumb" is that you should be giving Alfresco at least 4GB, so it may struggle to run on your computer.

Hi,

I've tried changing setenv.bat, it is like this now:

set JAVA_HOME=D:\Alfresco\java
set JAVA_OPTS=-server -Xss1024K -Xms1G -Xmx2G -XX:MaxPermSize=128M -XX:NewSize=512m‍‍

However, nothing changed.

Shouldn't 2 GB be enough just for 1 user?

Aren't my options correct? Should I edit another file?

I saw the configuration here: http://docs.alfresco.com/4.0/topic/com.alfresco.enterprise.doc/concepts/jvm-tuning.html

[mrogers]

Your settings are fine.

What else have you got running?    It could be something else on your machine.

[nm_santos]

Your settings are fine.

What else have you got running?    It could be something else on your machine.

I've got another Java installation.

Could this be causing issues?

I've got another tomcat but I don't run both at the same time.

I installed alfresco with the executable, namely https://process.alfresco.com/ccdl/?file=release/community/build-4003/alfresco-community-4.0.d-instal...

Memory usage: http://img213.imageshack.us/img213/9940/memoryusage.jpg