java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: PermGen space

Question

every body

i got exception when i run server ,i think it's memory leaks!

i tried many values of parameter JAVA_OPS and still got exception!!!

In console i got this exception you can see as below!

Nov 18, 2013 2:48:48 PM org.apache.catalina.startup.HostConfig deployDescriptors
SEVERE: Error waiting for multi-thread deployment of context descriptors to complete
java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: PermGen space
at java.util.concurrent.FutureTask$Sync.innerGet(Unknown Source)
at java.util.concurrent.FutureTask.get(Unknown Source)
at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:578)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:474)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1401)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:317)
at     
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:402)
at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:347)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1140)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:800)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.OutOfMemoryError: PermGen space

Exception in thread "main" java.lang.OutOfMemoryError: PermGen space

Answer 1

It always makes sense to specify what the "many values" are that you've already tried.

First of all: They'd need to be JAVA_OPTS, but that might also be a typo just in this question. However, it's even better to use CATALINA_OPTS.

Most important, when there are PermGen errors, -Xmx doesn't help at all. You want to set -XX:MaxPermSize=256m (or some other amount of memory). You'll find a lot of information about this issue when you just google the error message - PermGen is a specific region of memory that the Sun/Oracle JVM uses. Increasing the available Heap memory doesn't help at all.