In Java application, PermGem memory is very important, it is used to compile and optimize classes. You might also face this issue during deployment application in tomcat, in my case, I faced it with Tomcat 6 and 7 with message of: <code>java.lang.OutOfMemoryError: PermGen space</code> Solutions Increasing the PermGem memory in “catalina.bat” for windows or “catalina.sh”…