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转自:
http://www.cnblogs.com/xwdreamer/archive/2011/11/21/2296930.html
1.报错:
Exception in thread "DispatcherThread" java.lang.OutOfMemoryError: PermGen space
Exception in thread "ContainerBackgroundProcessor[StandardEngine[Catalina]]" java.lang.OutOfMemoryError: PermGen space
Exception in thread "State Saver" java.lang.OutOfMemoryError: PermGen space
Exception in thread "AWT-Windows" java.lang.OutOfMemoryError: OutOfMemoryError
2.原因:
PermGen space的全称是Permanent Generation space,是指内存的永久保存区域,这块内存主要是被JVM存放Class和Meta信息的,Class在被Loader时就会被放到PermGen space中,它和存放类实例(Instance)的Heap区域不同,GC(Garbage Collection)不会在主程序运行期对PermGen space进行清理,所以如果你的应用中有很多CLASS的话,就很可能出现PermGen space错误,这种错误常见在web服务器对JSP进行pre compile的时候。如果你的WEB APP下都用了大量的第三方jar, 其大小超过了jvm默认的大小(4M)那么就会产生此错误信息了。
3.解决方法1:
手动设置MaxPermSize大小,如果是linux系统,修改TOMCAT_HOME/bin/catalina.sh,如果是windows系统,修改TOMCAT_HOME/bin/catalina.bat,
在“echo "Using CATALINA_BASE: $CATALINA_BASE"”上面加入以下行:
JAVA_OPTS="-server -XX:PermSize=64M -XX:MaxPermSize=128m
建议:将相同的第三方jar文件移置到tomcat/shared/lib目录下,这样可以达到减少jar 文档重复占用内存的目的。
4.解决方法2
修改eclipse.ini文件,修改如下:
-vmargs
-Dosgi.requiredJavaVersion=1.5
-Xms128m
-Xmx512m
-XX:PermSize=64M
-XX:MaxPermSize=128M如果还报错,可以考虑如下修改
-vmargs
-Dosgi.requiredJavaVersion=1.5
-Xms512m
-Xmx1024m
-XX:PermSize=256M
-XX:MaxPermSize=512M
报错:
2011-11-21 21:10:46 org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc
严重: The web application [/Application] registered the JDBC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
2011-11-21 21:10:46 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
严重: The web application [/Application] appears to have started a thread named [MySQL Statement Cancellation Timer] but has failed to stop it. This is very likely to create a memory leak.
2011-11-21 21:10:46 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
严重: The web application [/Application] appears to have started a thread named [AWT-Windows] but has failed to stop it. This is very likely to create a memory leak.
2011-11-21 21:10:46 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
严重: The web application [/Application] appears to have started a thread named [Thread-14] but has failed to stop it. This is very likely to create a memory leak.
2011-11-21 21:10:46 org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap
严重: The web application [/Application] created a ThreadLocal with key of type [net.sf.json.AbstractJSON$1] (value [net.sf.json.AbstractJSON$1@3661eeb]) and a value of type [java.util.HashSet] (value [[]]) but failed to remove it when the web application was stopped. This is very likely to create a memory leak.
2011-11-21 21:10:50 org.apache.catalina.core.ApplicationContext log
信息: Initializing Spring FrameworkServlet 'Dispatcher'修改catalina.bat
添加
JAVA_OPTS="-Djava.awt.headless=true -Dfile.encoding=UTF-8
-server -Xms1536m -Xmx1536m
-XX:NewSize=256m -XX:MaxNewSize=256m -XX:PermSize=256m
-XX:MaxPermSize=256m -XX:+DisableExplicitGC"
样例
# JSSE_HOME (Optional) May point at your Java Secure Sockets Extension
# (JSSE) installation, whose JAR files will be added to the
# system class path used to start Tomcat.
#
# CATALINA_PID (Optional) Path of the file which should contains the pid
# of catalina startup java process, when start (fork) is used
#
# $Id: catalina.sh 609438 2008-01-06 22:14:28Z markt $
# -----------------------------------------------------------------------------
JAVA_OPTS="-Djava.awt.headless=true -Dfile.encoding=UTF-8 -server -Xms1536m
-Xmx1536m -XX:NewSize=256m -XX:MaxNewSize=256m -XX:PermSize=256m
-XX:MaxPermSize=256m -XX:+DisableExplicitGC"
# OS specific support. $var _must_ be set to either true or false.
cygwin=false
os400=false
darwin=false
case "`uname`" in
CYGWIN*) cygwin=true;;
OS400*) os400=true;;
Darwin*) darwin=true;;
esac
# resolve links - $0 may be a softlink
PRG="$0"
具体参数根据自己机器情况而定
JAVA_OPTS="-Djava.awt.headless=true -Dfile.encoding=UTF-8 -server -Xms512m
-Xmx512m -XX:NewSize=256m -XX:MaxNewSize=256m -XX:PermSize=256m
-XX:MaxPermSize=256m -XX:+DisableExplicitGC"
http://www.cnblogs.com/xwdreamer/archive/2011/11/21/2296930.html
1.报错:
Exception in thread "DispatcherThread" java.lang.OutOfMemoryError: PermGen space
Exception in thread "ContainerBackgroundProcessor[StandardEngine[Catalina]]" java.lang.OutOfMemoryError: PermGen space
Exception in thread "State Saver" java.lang.OutOfMemoryError: PermGen space
Exception in thread "AWT-Windows" java.lang.OutOfMemoryError: OutOfMemoryError
2.原因:
PermGen space的全称是Permanent Generation space,是指内存的永久保存区域,这块内存主要是被JVM存放Class和Meta信息的,Class在被Loader时就会被放到PermGen space中,它和存放类实例(Instance)的Heap区域不同,GC(Garbage Collection)不会在主程序运行期对PermGen space进行清理,所以如果你的应用中有很多CLASS的话,就很可能出现PermGen space错误,这种错误常见在web服务器对JSP进行pre compile的时候。如果你的WEB APP下都用了大量的第三方jar, 其大小超过了jvm默认的大小(4M)那么就会产生此错误信息了。
3.解决方法1:
手动设置MaxPermSize大小,如果是linux系统,修改TOMCAT_HOME/bin/catalina.sh,如果是windows系统,修改TOMCAT_HOME/bin/catalina.bat,
在“echo "Using CATALINA_BASE: $CATALINA_BASE"”上面加入以下行:
JAVA_OPTS="-server -XX:PermSize=64M -XX:MaxPermSize=128m
建议:将相同的第三方jar文件移置到tomcat/shared/lib目录下,这样可以达到减少jar 文档重复占用内存的目的。
4.解决方法2
修改eclipse.ini文件,修改如下:
-vmargs
-Dosgi.requiredJavaVersion=1.5
-Xms128m
-Xmx512m
-XX:PermSize=64M
-XX:MaxPermSize=128M如果还报错,可以考虑如下修改
-vmargs
-Dosgi.requiredJavaVersion=1.5
-Xms512m
-Xmx1024m
-XX:PermSize=256M
-XX:MaxPermSize=512M
报错:
2011-11-21 21:10:46 org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc
严重: The web application [/Application] registered the JDBC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
2011-11-21 21:10:46 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
严重: The web application [/Application] appears to have started a thread named [MySQL Statement Cancellation Timer] but has failed to stop it. This is very likely to create a memory leak.
2011-11-21 21:10:46 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
严重: The web application [/Application] appears to have started a thread named [AWT-Windows] but has failed to stop it. This is very likely to create a memory leak.
2011-11-21 21:10:46 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
严重: The web application [/Application] appears to have started a thread named [Thread-14] but has failed to stop it. This is very likely to create a memory leak.
2011-11-21 21:10:46 org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap
严重: The web application [/Application] created a ThreadLocal with key of type [net.sf.json.AbstractJSON$1] (value [net.sf.json.AbstractJSON$1@3661eeb]) and a value of type [java.util.HashSet] (value [[]]) but failed to remove it when the web application was stopped. This is very likely to create a memory leak.
2011-11-21 21:10:50 org.apache.catalina.core.ApplicationContext log
信息: Initializing Spring FrameworkServlet 'Dispatcher'修改catalina.bat
添加
JAVA_OPTS="-Djava.awt.headless=true -Dfile.encoding=UTF-8
-server -Xms1536m -Xmx1536m
-XX:NewSize=256m -XX:MaxNewSize=256m -XX:PermSize=256m
-XX:MaxPermSize=256m -XX:+DisableExplicitGC"
样例
# JSSE_HOME (Optional) May point at your Java Secure Sockets Extension
# (JSSE) installation, whose JAR files will be added to the
# system class path used to start Tomcat.
#
# CATALINA_PID (Optional) Path of the file which should contains the pid
# of catalina startup java process, when start (fork) is used
#
# $Id: catalina.sh 609438 2008-01-06 22:14:28Z markt $
# -----------------------------------------------------------------------------
JAVA_OPTS="-Djava.awt.headless=true -Dfile.encoding=UTF-8 -server -Xms1536m
-Xmx1536m -XX:NewSize=256m -XX:MaxNewSize=256m -XX:PermSize=256m
-XX:MaxPermSize=256m -XX:+DisableExplicitGC"
# OS specific support. $var _must_ be set to either true or false.
cygwin=false
os400=false
darwin=false
case "`uname`" in
CYGWIN*) cygwin=true;;
OS400*) os400=true;;
Darwin*) darwin=true;;
esac
# resolve links - $0 may be a softlink
PRG="$0"
具体参数根据自己机器情况而定
JAVA_OPTS="-Djava.awt.headless=true -Dfile.encoding=UTF-8 -server -Xms512m
-Xmx512m -XX:NewSize=256m -XX:MaxNewSize=256m -XX:PermSize=256m
-XX:MaxPermSize=256m -XX:+DisableExplicitGC"
发表评论
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Tomcat Servlet request.getRemoteAddr()所得值为0:0:0:0:0:0:0:1
2013-11-08 11:53 1504环境: tomcat5.6 JSP UTF-8 IP协 ... -
追踪应用客户端IP
2013-08-22 09:53 695参考: http://www.knowsky.co ... -
java多线程发送URL请求
2013-07-19 11:32 1128import java.io.Buffered ... -
java启用多进程调用某个类(是class文件)
2013-07-19 11:29 625import java.io.BufferedInpu ... -
支持Window和Linux下tar.gz文件压缩
2013-07-04 19:12 950最近做文件压缩,最后在Window下压缩解压后都可以,可是在W ... -
请慎用java的File#renameTo(File)方法
2013-07-03 12:14 519转自: http://xiaoych.iteye.com/bl ... -
java从tar.gz中抽取某个文件
2013-07-01 15:03 1288File tarGzFile = new File(a ... -
在不同jar文件中有两个同名类是加载的哪一个已经classload
2013-06-24 09:33 1418在Eclipse中加载第一个(通常是lib下面的顺序,但并非一 ... -
Java泛型的使用及List排序
2013-04-19 09:56 940import java.util.ArrayLis ... -
java删除一个文件夹,包括该文件夹下的所有文件夹及文件
2013-04-10 17:42 727要删除的文件必须存在且是一个文件夹,可以根据自己的需求,在调用 ... -
java压缩文件生成XXX.tar.gz压缩包
2013-04-09 13:42 2186生成XXX.tar.gz压缩文件有两种方式,可以先打包后压缩, ... -
java按照编码读写文件
2013-04-07 09:28 760package d20130406; impor ... -
java字符串中显示双引号
2013-04-19 09:58 1171转: http://www.cnblogs.com/zhish ... -
java写入txt文件
2013-04-19 09:59 609用另一个构造方法FileWriter fileWriter=n ... -
读取文件方法大全
2013-04-25 11:51 257转自: http://www.cnblogs.com/love ... -
Java性能监测
2013-04-15 13:20 509通过jdk自带工具监测: -
Java 32bit JVM Xmx 参数大小限制
2013-03-07 13:26 1395转自: http://stackoverflow.com/qu ... -
Java模拟HTTP发送请求
2013-04-15 13:17 726package com.hp.pn.service; ... -
tomcat配置文件
2013-03-01 13:51 599转自: http://www.cnblogs.com/smil ... -
<context-param>与<init-param>的区别与作用
2013-02-28 09:41 537转载: http://www.cnblogs.com/hzj- ...
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