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Out of Memory on Confluence 7.1 startup after installation

We installed Confluence 7.1 on our server with Ubuntu 18.04 - with PostgreSQL. We are using the Tomcat and JRE shipped with the binary installation package.

After successfully stepping through the Setup-Wizard by browser we tried to access our fresh install but we received an error. So we restartet the service and get this Exception each time:

2019-11-20 13:32:55,098 ERROR [Catalina-utility-1] [atlassian.confluence.event.ConfluenceEventDispatcher] run There was an exception thrown trying to dispatch event [com.atlassian.plugin.event.events.PluginFrameworkStartedEvent@2306019c] from the invoker [SingleParameterMethodListenerInvoker{method=public void com.atlassian.sal.confluence.lifecycle.TenantAwareLifecycleManager.onPluginFrameworkStarted(com.atlassian.plugin.event.events.PluginFrameworkStartedEvent), listener=com.atlassian.sal.confluence.lifecycle.TenantAwareLifecycleManager$$EnhancerBySpringCGLIB$$4970f72c@5e04b198} (timed)]
java.lang.RuntimeException: unable to create new native thread. Listener: com.atlassian.sal.confluence.lifecycle.TenantAwareLifecycleManager$$EnhancerBySpringCGLIB$$4970f72c event: com.atlassian.plugin.event.events.PluginFrameworkStartedEvent
at com.atlassian.event.internal.SingleParameterMethodListenerInvoker.invoke(SingleParameterMethodListenerInvoker.java:57)
at com.atlassian.confluence.event.ConfluenceListenerHandlersConfiguration$TimedListenerInvoker.invoke(ConfluenceListenerHandlersConfiguration.java:96)
at com.atlassian.confluence.event.ConfluenceEventDispatcher$VCacheRequestContextRunnableFactory$1.lambda$run$0(ConfluenceEventDispatcher.java:93)
at com.atlassian.confluence.vcache.VCacheRequestContextOperations.lambda$doInRequestContext$0(VCacheRequestContextOperations.java:50)
at com.atlassian.confluence.impl.vcache.VCacheRequestContextManager.doInRequestContextInternal(VCacheRequestContextManager.java:84)
at com.atlassian.confluence.impl.vcache.VCacheRequestContextManager.doInRequestContext(VCacheRequestContextManager.java:68)
at com.atlassian.confluence.vcache.VCacheRequestContextOperations.doInRequestContext(VCacheRequestContextOperations.java:49)
at com.atlassian.confluence.event.ConfluenceEventDispatcher$VCacheRequestContextRunnableFactory$1.run(ConfluenceEventDispatcher.java:93)
at com.atlassian.event.internal.AsynchronousAbleEventDispatcher.dispatch(AsynchronousAbleEventDispatcher.java:85)
at com.atlassian.event.internal.EventPublisherImpl.invokeListeners(EventPublisherImpl.java:227)
at com.atlassian.event.internal.EventPublisherImpl.publish(EventPublisherImpl.java:112)
at com.atlassian.confluence.event.TimingEventPublisher.publish(TimingEventPublisher.java:76)
at com.atlassian.plugin.event.impl.DefaultPluginEventManager.broadcast(DefaultPluginEventManager.java:92)
at com.atlassian.plugin.manager.DefaultPluginManager.broadcastIgnoreError(DefaultPluginManager.java:1965)
at com.atlassian.plugin.manager.DefaultPluginManager.lambda$lateStartup$4(DefaultPluginManager.java:672)
at com.atlassian.plugin.manager.PluginTransactionContext.wrap(PluginTransactionContext.java:63)
at com.atlassian.plugin.manager.DefaultPluginManager.lateStartup(DefaultPluginManager.java:645)
at com.atlassian.confluence.plugin.ConfluencePluginManager.lateStartup(ConfluencePluginManager.java:149)
at com.atlassian.confluence.plugin.PluginFrameworkContextListener.contextInitialized(PluginFrameworkContextListener.java:81)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4682)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5143)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.OutOfMemoryError: unable to create new native thread
at java.lang.Thread.start0(Native Method)
at java.lang.Thread.start(Thread.java:717)
at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:957)
at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1378)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
at com.atlassian.sal.confluence.lifecycle.ForkAndJoinExecutionStrategy.trigger(ForkAndJoinExecutionStrategy.java:32)
at com.atlassian.sal.confluence.lifecycle.ServiceExecutionStrategyComposite.trigger(ServiceExecutionStrategyComposite.java:32)
at com.atlassian.sal.confluence.lifecycle.TenantAwareLifecycleManager$PerTenantLifecycleExecution.run(TenantAwareLifecycleManager.java:160)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

 

We've already adjusted JVM Settings in the setenv.sh but it still seems to produce errors. This is the excerpt form the atlassian-confluece.log where the configuration of the JVM is printed:

 

--------------------------
JVM Stats
--------------------------
xmx = 4294967296
usedNonHeap = 367299632
availableHeap = 3357571600
availableNonHeap = -1
allocatedHeap = 2147483648
freeAllocatedHeap = 1210087952
maxNonHeap = -1
availablePermGen = 0
maxPermGen = -1
maxHeap = 4294967296
usedHeap = 937395696
usedPermGen = -1
xms = 2147483648

We've also added this commands to the top of setenv.sh

ulimit -u 4096
ulimit -n 4096

 

Any ideas how to solve this issue?

Best regards

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