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 ...

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 ...

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 ...

Every time i use : https://colab.research.google.com/drive/1VDjRLKAu9KLQky0gv4RLJjeH6NRPiWXy?usp=sharing i have to wait about 35 min installing the openpose is there anway installing it permanent and ...

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 ...

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'...

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:+...

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. ...

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 ...

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 ...

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.

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:...

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 ...

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 ...

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 ...