Jvm what is permgen

This information can then be used to reduce the usage of these objects if possible to avoid the error. Managing errors and exceptions in your code is challenging. It can make deploying production code an unnerving experience. Being able to track, analyze, and manage errors in real-time can help you to proceed with more confidence.

Rollbar automates Java error monitoring and triaging, making fixing Java errors easier than ever. Try it today.

Without it we would be flying blind. Blog tutorials. Table of Contents. Try Rollbar Today. What Causes java. Applications with large code-base can quickly fill up this segment of the heap which will cause java. Static methods and variables were Stored in the PermGen space prior to Java version 8. But now in Java 8, a new memory space was introduced, called MetaSpace, where all fields of the class, methods of a class with the byte code of the methods, constant pool, JIT optimizations, etc are stored.

The maximum metaspace size can be set using -XX:MaxMetaspaceSize argument and the default size is unlimited, which means your system memory is the limit. Your email address will not be published. Object de-alloaction in the tenured space is taken care of by GC major Method Area Also called the non heap area in HotSpot JVM implementation It is divided into 2 major sub spaces Permanent Generation — This area stores class related data from class definitions, structures, methods, field, method data and code and constants.

The compiled code is nothing but native code hardware specific and is taken care of by the JIT Just In Time compiler which is specific to the Oracle HotSpot JVM JVM Stack Has a lot to do with methods in the Java classes Stores local variables and regulates method invocation, partial result and return values Each thread in Java has its own private copy of the stack and is not accessible to other threads. So where is PermGen??? Like this: Like Loading This entry was posted in Java , JVM and tagged java se 8 , java virtual machine , jvm , jvm memory , permanent generation , permgen.

Bookmark the permalink. Jon Diamond says:. September 9, at pm. Cheers Jon Like Like. Abhishek says:. Jon, first all of thanks for reading! Added a note for the reader as per your suggestion Appreciate your inputs! Leave a Reply Cancel reply Enter your comment here Fill in your details below or click an icon to log in:. Email required Address never made public.

Name required. Disclaimer The views expressed on this blog are my own and do not necessarily reflect the views of Oracle. Create a free website or blog at WordPress. Follow Following.