tomcat6 eclipse java.lang.OutOfMemoryError: PermGen space

-Xms512m -Xmx1024m

-Xms1024M   -Xmx2048M -XX:MaxPermSize=2048M

网上能找到的所有的方法都试过了，修改tomcat  还有 eclipse 中的设置 但是都不行 

环境是  jdk 1.6  tomcat 6.0 

报错信息 

java.lang.OutOfMemoryError: PermGen space

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClassCond(Unknown Source)

at java.lang.ClassLoader.defineClass(Unknown Source)

at java.security.SecureClassLoader.defineClass(Unknown Source)

at java.net.URLClassLoader.defineClass(Unknown Source)

at java.net.URLClassLoader.access$000(Unknown Source)

at java.net.URLClassLoader$1.run(Unknown Source)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:182)

at org.apache.jasper.compiler.Comp

iler.compile(Compiler.java:354)

at org.apache.jasper.compiler.Compiler.compile(Compiler.java:334)

at org.apache.jasper.compiler.Compiler.compile(Compiler.java:321)

at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:592)

at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:328)

at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)

at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)

解决办法：

E:\apache-tomcat-7.0.64\bin 下 catalina.bat 文件

开头加一句：

set JAVA_OPTS=-Xms1024m -Xmx1024m -Xss1024K -XX:PermSize=512m -XX:MaxPermSize=1024m