jboss 5.1 high memory usage

Solution PermGen space Tomcat memory settings

Using the Java program from the database query large amounts of data, or application server (eg tomcat, jboss, weblogic) occur when loading jar package java.lang.OutOfMemoryError exception. This is mainly due to the application server memory caused. This

Java Virtual Machine (JVM) in the memory settings Xiangjie

In larger-scale applications, Java Virtual Machine (JVM) memory settings is particularly important to achieve good efficiency in the project, GC (garbage collection) set is the first step. PermGen space: full name is PermanentGenerationspace. That is a pe

Java Virtual Machine (JVM) in the memory settings Xiangjie (Goodfellas)

In some slightly larger scale applications, Java Virtual Machine (JVM) memory settings is particularly important, to obtain a good efficiency in the project, GC (garbage collection) the setting is the first step. PermGen space: full name is the Permanent

Java Virtual Machine (JVM) is reproduced in the memory settings Xiangjie

In larger-scale applications, Java Virtual Machine (JVM) memory settings is particularly important to achieve good efficiency in the project, GC (garbage collection) set is the first step. PermGen space: full name is the Permanent Generation space. That i

Class class loader on the issue of memory leaks

Since: http://blog.csdn.net/runanli/archive/2008/09/24/2972361.aspx Wave background and technical personnel for the Guangdong Tobacco Tobacco December 10 memory overflow events of a wide range of technology and get some constructive suggestions and conclu

Class loader - the memory leak problem of a

About websphere console to restart the application, rather than restart the websphere, this time a static class can not be recovered, resulting in some classes can not be destroyed, occupied by the memory, but this memory can not be reused, can be said th

[Change] Java Virtual Machine (JVM) in the memory settings Xiangjie

Java Virtual Machine (JVM) in the memory settings Xiangjie This article introduces you to the Java virtual machine, that is, how to set JVM memory, the GC to achieve good efficiency. In larger-scale applications, Java Virtual Machine (JVM) memory settings

PermGen space: the memory of the permanent preservation areas OutOfMemoryError

I. Collection tomcat memory settings problem Java programs using the query from the database or application server a lot of data (such as tomcat, jboss, weblogic) will appear when loading jar package java.lang.OutOfMemoryError exception. This is mainly du

Java Virtual Machine (JVM) memory settings in the Detailed

Reprinted: http://developer.51cto.com/art/200906/127144.htm In larger-scale applications, Java Virtual Machine (JVM) memory settings is particularly important to achieve good efficiency in the project, GC (garbage collection) setting is the first step. Pe

Jboss cluster in the jBPM workflow engine scalability and performance

Jboss cluster in the jBPM workflow engine scalability and performance Author: Szymon Zeslawski Translation: snowfox Original Address: http://www.theserverside.com/tt/articles/article.tss?l=WorkflowEngineJBossCluster 3 / 2009 Mission / scope of <br /

JVM memory model, as well as garbage collection strategy for parsing [continued]

Then today, complement Part Bo-wen. 3 garbage collection policy configuration 3.1 Throughput Priority Throughput refers to the GC run time and the ratio of the total time, such as the system runs 100 minutes, while the GC takes up a minute, then the throu

In larger-scale applications, Java Virtual Machine (JVM) memory settings is particularly important to achieve good efficiency in the project, GC (garbage collection) set is the first step. PermGen space

Basic knowledge JAVA 6 Pz% @ 5P 1, object-oriented features are what yl3 = V 5b 1. Abstraction: 8 9M.C | Dkf Abstract is to overlook a topic unrelated to the current target those aspects in order to more fully pay attention to related aspects of the curre

JVM memory and garbage collection strategy model analysis [continued]

From: http://yuquan-nana.javaeye.com/blog/599750 3 garbage collection policy configuration 3.1 throughput priority Throughput refers to the GC run time and the ratio of total time, such as the system runs 100 minutes, while the GC takes up a minute, then

Class loader - the memory leak problem of 2

Serious warning: If there is any application other than from a reference cited by the J2EE application itself class loader loads the class and class instance object, then ClassLoader class loader memory leak problem arises. ClassLoader class loader memory

Through the secondary cache to speed up your hibernate application

Keywords: hibernate second cache Flanging edge because I also learn, there is nothing inevitable place undue Translations are welcome to U.S. criticism Original Title: Speed Up Your Hibernate Application with Second-Level Caching Original Source: http://w

java.lang.OutOfMemoryError

java.lang.OutOfMemoryError: PermGen space and their solutions PermGen space stands for Permanent Generation space, refers to the memory of the permanent preservation areas OutOfMemoryError: PermGen space on the surface that is out of the memory benefit, t

In-depth analysis on the JVM PermGen space

PermGen space stands for Permanent Generation space, refers to the memory of the permanent preservation areas OutOfMemoryError: PermGen space on the surface that is out of the memory benefit, the solution must also be to increase the memory. Why talk abou

[Change] java.lang.OutOfMemoryError: PermGen space solution

PermGen space stands for Permanent Generation space, refers to the memory of the permanent preservation areas OutOfMemoryError: PermGen space on the surface that is out of the memory benefit, the solution must also be to increase the memory. Why talk abou

Useful performance analysis tool-VisualVM

Recent study TDA (Thread Dump Analyzer), I found a very good tool to use in view the JVM-VisualVM, this tool is the Sun in the JDK1.6 Update7 introduced after version, the bin directory on the following, ashamed of I actually had never found. Simply put,

commonly used linux commands

********* ************** Display command help information 1: Command name + - help 2: man + Command name 3: The command name + random dot letters 4: Direct hit command name *********** ************** Role of various small tools top: show system infor ...

java.lang.OutOfMemoryError: PermGen space and their solutions

1. Problem Description JBoss 4.0.5GA deployed and redeployed in several applications (war, ear, etc.) will soon appear PermGen Memory Leak: Out of memory exception of memory exception. PermGen space full name is the Permanent Generation space, refers ...

Sakai 2.6 Configuration original English

1.0 Verify / Install Java 5.0 Sun Microsystem's Java 2 Platform Standard Edition 5.0 (J2SE 5.0), aka Java 1.5, is required to build and run Sakai. Certain files, such as *. jsp and *. jws, require compilation so downloading and attempting to use only

EJBCA Quick start guide

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Tomcat Server.xml 's Connector configuration

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Build scalable, high-performance Internet applications (from Taobao Speaking)

Time flies, to Taobao has been two months, in two months time, she also feel the deep. Taobao on the combination of the following present some of the underlying technical framework and some of their own feelings is that how to build a scalable, high perfo

Build scalable, high performance Internet applications

Time flies, to the new company has two months, in two months time, she also feel the deep. Following the combined company some of the underlying technical framework and some of their own feelings is that how to build a scalable, high performance, high ava

Best Open Source Software 2009 Awards List

InfoWorld published a 2009 list of the best open source software awards, including the best open source developer tools, best open source enterprise software, best open source network software and the best open-source platforms and middleware. There is al

MyEclipse 8.5 Optimization examples

The first step: remove automatic validation validation with a pile of what xml, jsp, jsf, js, etc., we do not need to automatically check all about, but will need to manually check what the time! Cancellation method: windows-> perferences-> myeclips

Monitoring system on the development of some ideas

Requirements: development of a monitoring system that can monitor a visual operation of the system state, each server's load and so on. Sustained increase in the CPU share required or when the remaining memory warning. (Monitoring indicators: CPU, mem

ava.lang.OutOfMemoryError: PermGen space and their solutions (transfer)

java.lang.OutOfMemoryError: PermGen space and their solutions PermGen space full name is the Permanent Generation space, refers to the memory of the permanent preservation areas OutOfMemoryError: PermGen space memory benefits from the surface is out, the

Performance testing tools _jprobe

JProfiler is a well-known analysis for java system monitoring software, very powerful, can monitor the normal java application, applet, java web start, application server and so on. In addition to monitoring the local program, you can also run on the remo

tomcat performance monitoring tools lambda probe

lambda probe is a tomcat performance monitoring tool, which provides more powerful than the tomcat management console feature, which itself is a web application deployed to tomcat directly through the web under way for a visit. lambda probe provides a ver

Oracle GoldenGate real-time using data integration

】 【Switched http://blog.chinaunix.net/u1/53677/showart_2314585.html Oracle GoldenGate real-time using data integration Learn how to install, set up and configure Oracle GoldenGate to easily achieve Oracle Database 10 g and 11 g Seamless replication of dat

Taobao scalable high-performance Internet infrastructure

Taobao scalable high-performance Internet infrastructure An application stateless (session Taobao framework) If the session save a lot of state information with the client to save state information when the server is down, usually through the cluster solu

0 MyEclipse using the lessons learned. Shortcut keys

================================================== ============================== Editor: Ctrl + Shift + L Show all keyboard shortcuts Ctrl + K with reference to the selected word (Word) to quickly navigate to the next Ctrl + Shift + K with reference to t

On the remote server monitoring

I used to get the previous state are based on the computer to write shell scripts to implement (at the time the server is linux's) later obtained from the network can also get the following ways: 1, the bottom of the telnet protocol: Use telnet p

(Transfer) to build scalable, high-performance Internet applications

Between the flies to the new company has two months in two months time, and he is feeling deep. Here to talk about some of their own understanding. A stateless application As the saying goes, good or bad scalability of a system depends on the application

Use Oracle GoldenGate real-time data integration

[Transfer] http://blog.chinaunix.net/u1/53677/showart_2314585.html Use Oracle GoldenGate real-time data integration Learn how to install, set up and configure Oracle GoldenGate to easily Oracle Database 10 g and 11 g of seamless data replication between.

[Transfer] high-performance scalable architecture technology Taobao Quest

Originally Posted http://www.360doc.com/content/11/0112/11/1542811_85941342.shtml In the "world's largest technical background PHP site Facebook Quest," a paper presented a large technology component SNS sites. Today, we continue to large si

MyEclipse using the lessons learned

0 shortcuts ================================================== ============================== Editor: Ctrl + Shift + L Show all shortcuts Ctrl + K with reference to the selected word (Word) to quickly navigate to the next Ctrl + Shift + K with reference t

Common abnormalities resolved

ConcurrentHashMap and CopyOnWriteArrayList comparison. Blog categories: Java ConcurrentHashMap ConcurrentHashMap introduced Segment, each Segment is a hashtable, the equivalent of two Hash table, and then lock in the Segment level, and increased concurren

Taobao high-performance, scalable Internet architecture Revealed

Original Address: http://1.roger.sinaapp.com/?p=122 Taobao high-performance, scalable Internet architecture Revealed Posted on July 23, 2011 by the mmxydqzys Time flies, to Taobao has been two months, in two months time, they would feel deeply. Here

Great collection of java interview topics

1, object-oriented features of what has 1. Abstract: Abstract is that it has overlooked a subject has nothing to do with the current goal of those aspects in order to more fully with the current objectives of the attention-related aspects. Abstract does n

JAVA interview questions

JAVA interview questions 1, object-oriented features of what has 1. Abstract 2. Inheritance 3. Packaging 4. Polymorphisms 2, String data types are the most basic right? Basic data types include byte, int, char, long, float, double, boolean and short. java

Uncover the hood of j2ee clustering

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java interview questions large aggregate sum

java interview questions Pen ~ a very comprehensive summary of major java interview questions large aggregate sum First, to talk about the final, finally, finalize the distinction. The most commonly asked. Second, Anonymous Inner Class (anonymous inner cl

java written Guinness Collection

This article is part of my summing up, attachment containing the full content, please download java written Guinness Collection 1. (&,|,^) Logical operation on the operation and conditions (&&,||) difference. (15 points) A major difference bet

Based on JAVA

1 JAVA 】 【basic knowledge related to JAVA Basic knowledge of JAVA-related 1, object-oriented aspects of the characteristics of which 1. Abstract: Abstract is that it has overlooked a theme has nothing to do with the current objectives of those aspects in

the use of jprofile

Carried over the Internet 1, Abstract To improve the performance of Java server need to simulate the load of the server. Create a simulation environment, collecting data and the results of the analysis may be the developers of many challenges. The article

java face questions and answers (based on 122 topics, topics code 19)

Basic knowledge of JAVA-related 1, object-oriented aspects of the characteristics of which 1. Abstract: Abstract is that it has overlooked a theme has nothing to do with the current objectives of those aspects in order to more fully with the current objec
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