我正在使用 JSF（使用 JSF Majorra 2.1.6）和 JPA（使用库 EclipseLink Juno）和 tomcat 7 server 开发 Java EE 应用程序。问题是当我将 JPA 应用程序添加到 tomcat 时，Tomcat 无法运行，并且我在控制台末尾有以下消息：
Infos: Cleaned up javabean caches
java.lang.OutOfMemoryError: PermGen space
at java.lang.ClassLoader.findBootstrapClass(Native Method)
at java.lang.ClassLoader.findBootstrapClassOrNull(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.apache.catalina.loader.WebappClassLoader.clearReferencesRmiTargets(WebappClassLoader.java:2556)
at org.apache.catalina.loader.WebappClassLoader.clearReferences(WebappClassLoader.java:1961)
at org.apache.catalina.loader.WebappClassLoader.stop(WebappClassLoader.java:1864)
at org.apache.catalina.loader.WebappLoader.stopInternal(WebappLoader.java:658)
at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:225)
at org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5509)
at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:225)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:153)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:812)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:787)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:607)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1055)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:978)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:472)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1322)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:89)
at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:379)
at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:324)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1041)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:774)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
谢谢您的帮助。