Questions tagged [permgen]
In the Java Virtual Machine, the permanent generation (or permgen) is used for class definitions and associated metadata.
permgen
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Integer literal in Java?
int x = 10;
Here 10 is directly assigned to variable x or 10 is stored somewhere else and then it get assigned to variable x?
I have read in one of the stackoverlow answer that Java stores literals ...
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G1GC and Permgen
I'm having doubts regarding which metrics I should follow to allocate memory for the permgen.
I'm having crashing problems and that permgen is full, my server has 32gb of memory for the heap and 512m ...
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Classloader Leak while Deserializing KieBase
I'm using drools-core 7.68.0.Final to serialize a KieBase using DroolsObjectOutputStream. Each time that I subsequently deserialize the KieBase back into memory using DroolsObjectInputStream I get a ...
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jvm full gc can't unload classes even permgen is full
Our production server went OOM because permgen is full. Using jmap -permstat to check the permgen area, we found there were many classes loaded by com.sun.xml.ws.client.WSSServiceDelegatingLoader. The ...
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How analyse an OutOfMemory GWT Error and customize heap?
I work on a old Java 1.6 application which use GWT 2.4.0
Since few weeks, it started to show a lot of OutOfMemoryError, and I can't find why...
I can't do a lot of modification on this old app, I can'...
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-XX:MaxPermSize setting was not reflected
I am using below JVM opts in my application on Linux server
-server -Xms3g -Xmx3g -Xmn512m -XX:MaxPermSize=256m -Xss256k -Xloggc:${gc_log_file}
-verbose:gc -XX:+DoEscapeAnalysis -XX:+...
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GarbageCollector stoped running after setting XX:MaxMetaspaceSize to the same old XX:MaxPermSize value
During a migration of a Java application from Java 6 + Jboss to Java 8 + Tomcat.
We replaced the old XX:MaxPermSize value by setting a value for the XX:MaxMetaspaceSize in the new Java 8 version.
...
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Where is permgen located in JDK 7 JVM? [closed]
I'm studying about JDK 7 JVM's Runtime Data Areas.
I want to compare JDK 7 JVM and JDK 8 JVM. There are some memory areas in JDK 7 JVM, but I'm confused.
I'm looking for JDK 7 JVM Runtime Data Areas ...
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PermGen Space Error while running Maven Build
I have a requirement to upload a document to SharePoint by converting a .txt file to Excel and then send the document to a REST service by converting the excel into a byteArray.
The implementation ...
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How to clear PermGen in tomcat without restart
I want to clear PermGen memory in tomcat without restarting tomcat.
How can do this activity? I get:
PermGen: OutOfMemoryError
My problem is that I don't want to shut down tomcat.
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What should be the JVM heap size (Xms Xmx) for JDK8 64-bit on Linux having physical memory of 16 GB RAM and 8 CPU [closed]
I have 16GB of RAM and 8 CPU's on my Linux server with JDK8 x64 installed.
I have set up JVM heap size as below but keep getting java.lang.OutOfMemoryError
JAVA_OPTS="-Xms2048m -Xmx4096m -XX:...
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2
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354
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Drools - Is there a direct correlation between number of rules and permgen space?
I ran drools decision table with 100 rules and it worked fine. But as soon as I increased the number of rules to 1000, I started getting permgen space error. I had to increase permgen to 256MB for my ...
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Prevent object from being garbage collected for life of JVM [duplicate]
I have a ton of pooled objects that will be constantly reused during life of JVM. These objects should never be garbage collected.
I would like a way to optimize the JVM to never attempt (and waste ...
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Tomcat not unloading classes when aws s3 client is used
I am seeing a strange problem when using JAVA AWS s3 client. When I make multiple deployments(tomcat is not restarted, just war files are updated), the heap size remains the same but non heap size ...
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Why Oracle Specification does not tell anything about metaspace?
We all know that since Java 1.8 PermGen was removed and replaced by Metaspace.
I have read a lot of topics about Metaspace and I am completely sure that it's exists, but today I was asked about the ...
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