TOMCAT java.lang.OutOfMemoryError: PermGen space

1修改tomcat /bin catalina.bat 文件，用下面红字部分代替

echo Using CATALINA_BASE: "%CATALINA_BASE%"

echo Using CATALINA_HOME: "%CATALINA_HOME%"

echo Using CATALINA_TMPDIR: "%CATALINA_TMPDIR%"

if ""%1"" == ""debug"" goto use_jdk

echo Using JRE_HOME: "%JRE_HOME%"

goto java_dir_displayed

:use_jdk

echo Using JAVA_HOME: "%JAVA_HOME%"

:java_dir_displayed

echo Using CLASSPATH: "%CLASSPATH%"

set CATALINA_OPTS=-Xms512M -Xmx512M -XX:PermSize=512M -XX:MaxPermSize=512M

set JAVA_OPTS=-Xms128M -Xmx256M

2检测是否配置生效

D:\JDK\bin

双击打开以下

jvisualvm

查看看 PermGen 曲线图是否是设定的值