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By bball
via java.dzone.com
Published: Jul 25 2014 / 11:02

This recipe, taken from the Oracle SOA Suite 11g Performance Cookbook, looks at how increasing the permanent generation size. Permanent Generation (PermGen) is a special part of the Java heap which contains the Class templates for all of the Java Classes on your classpath. The size of the Permanent Generation heap can be controlled via the -XX:PermSize and -XX:MaxPermSize flags. Note that this is not a feature of the JRockit JVM (which stores its classes in the heap), as such this tip does not apply if you have chosen that JVM.
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