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社区首页 >问答首页 >c3p0 -java.lang.NoClassDefFoundError中的内存泄漏:com/mchange/v2/306/BasicResourcePool

问c3p0 -java.lang.NoClassDefFoundError中的内存泄漏:com/mchange/v2/306/BasicResourcePool
EN

Stack Overflow用户
提问于 2012-04-27 12:21:07
回答 1查看 7.2K关注 0票数 2

环境:服务器:JBoss4.2.3.GA

我们使用c3p0 0.9.1.2作为连接池。

每当我们在Jboss中热部署 war文件时，都会遇到来自c3p0的内存泄漏。它最终导致“java.lang.OutOfMemoryError: PermGen space”错误，我们被迫重新启动应用服务器。

有人遇到这个问题了吗？这个问题有什么解决办法吗？

Stacktrace如下所示：

代码语言：javascript
运行
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14:50:16,097 INFO  [WebappClassLoader] Illegal access: this web application instance has been stopped already.  Could not load com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.  The eventual following stack trace is caused by an error thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access, and has no functional impact.
java.lang.IllegalStateException
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1244)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
    at com.mchange.v2.resourcepool.BasicResourcePool.destroyResource(BasicResourcePool.java:980)
    at com.mchange.v2.resourcepool.BasicResourcePool.removeResource(BasicResourcePool.java:1406)
    at com.mchange.v2.resourcepool.BasicResourcePool.removeResource(BasicResourcePool.java:1378)
    at com.mchange.v2.resourcepool.BasicResourcePool.cullExpired(BasicResourcePool.java:1462)
    at com.mchange.v2.resourcepool.BasicResourcePool.access$1900(BasicResourcePool.java:32)
    at com.mchange.v2.resourcepool.BasicResourcePool$CullTask.run(BasicResourcePool.java:1937)
    at java.util.TimerThread.mainLoop(Timer.java:512)
    at java.util.TimerThread.run(Timer.java:462)
14:50:22,328 ERROR [STDERR] Exception in thread "Timer-5" 
14:50:22,329 ERROR [STDERR] java.lang.NoClassDefFoundError: com/mchange/v2/resourcepool/BasicResourcePool$1DestroyResourceTask
14:50:22,329 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.destroyResource(BasicResourcePool.java:980)
14:50:22,329 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.removeResource(BasicResourcePool.java:1406)
14:50:22,329 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.removeResource(BasicResourcePool.java:1378)
14:50:22,329 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.cullExpired(BasicResourcePool.java:1462)
14:50:22,329 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.access$1900(BasicResourcePool.java:32)
14:50:22,329 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool$CullTask.run(BasicResourcePool.java:1937)
14:50:22,329 ERROR [STDERR]     at java.util.TimerThread.mainLoop(Timer.java:512)
14:50:22,329 ERROR [STDERR]     at java.util.TimerThread.run(Timer.java:462)
14:50:22,329 ERROR [STDERR] Caused by: java.lang.ClassNotFoundException: com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask
14:50:22,329 ERROR [STDERR]     at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1358)
14:50:22,329 ERROR [STDERR]     at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
14:50:22,329 ERROR [STDERR]     ... 8 more
14:50:23,081 ERROR [STDERR] Exception in thread "Timer-6" 
14:50:23,082 ERROR [STDERR] java.lang.NoClassDefFoundError: com/mchange/v2/resourcepool/BasicResourcePool$1DestroyResourceTask
14:50:23,082 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.destroyResource(BasicResourcePool.java:980)
14:50:23,082 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.removeResource(BasicResourcePool.java:1406)
14:50:23,082 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.removeResource(BasicResourcePool.java:1378)
14:50:23,082 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.cullExpired(BasicResourcePool.java:1462)
14:50:23,082 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.access$1900(BasicResourcePool.java:32)
14:50:23,082 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool$CullTask.run(BasicResourcePool.java:1937)
14:50:23,082 ERROR [STDERR]     at java.util.TimerThread.mainLoop(Timer.java:512)
14:50:23,083 ERROR [STDERR]     at java.util.TimerThread.run(Timer.java:462)
14:51:59,105 INFO  [WebappClassLoader] Illegal access: this web application instance has been stopped already.  Could not load com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.  The eventual following stack trace is caused by an error thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access, and has no functional impact.
java.lang.IllegalStateException
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1244)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
    at com.mchange.v2.resourcepool.BasicResourcePool.destroyResource(BasicResourcePool.java:980)
    at com.mchange.v2.resourcepool.BasicResourcePool.removeResource(BasicResourcePool.java:1406)
    at com.mchange.v2.resourcepool.BasicResourcePool.removeResource(BasicResourcePool.java:1378)
    at com.mchange.v2.resourcepool.BasicResourcePool.cullExpired(BasicResourcePool.java:1462)
    at com.mchange.v2.resourcepool.BasicResourcePool.access$1900(BasicResourcePool.java:32)
    at com.mchange.v2.resourcepool.BasicResourcePool$CullTask.run(BasicResourcePool.java:1937)
    at java.util.TimerThread.mainLoop(Timer.java:512)
    at java.util.TimerThread.run(Timer.java:462)
^[[1;2C14:56:03,597 ERROR [STDERR] Exception in thread "Timer-11" 
14:56:03,598 ERROR [STDERR] java.lang.NoClassDefFoundError: com/mchange/v2/resourcepool/BasicResourcePool$1DestroyResourceTask
14:56:03,598 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.destroyResource(BasicResourcePool.java:980)
14:56:03,598 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.removeResource(BasicResourcePool.java:1406)
14:56:03,598 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.removeResource(BasicResourcePool.java:1378)
14:56:03,598 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.cullExpired(BasicResourcePool.java:1462)
14:56:03,598 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.access$1900(BasicResourcePool.java:32)
14:56:03,598 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool$CullTask.run(BasicResourcePool.java:1937)
Listening for transport dt_socket at address: 8787
14:56:03,598 ERROR [STDERR]     at java.util.TimerThread.mainLoop(Timer.java:512)
14:56:03,598 ERROR [STDERR]     at java.util.TimerThread.run(Timer.java:462)
14:56:03,598 ERROR [STDERR] Exception in thread "Timer-10" 
14:56:03,607 ERROR [STDERR] java.lang.NoClassDefFoundError: com/mchange/v2/resourcepool/BasicResourcePool$1DestroyResourceTask
14:56:03,607 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.destroyResource(BasicResourcePool.java:980)
14:56:03,607 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.removeResource(BasicResourcePool.java:1406)
14:56:03,607 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.removeResource(BasicResourcePool.java:1378)
14:56:03,607 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.cullExpired(BasicResourcePool.java:1462)
14:56:03,607 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.access$1900(BasicResourcePool.java:32)
14:56:03,607 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool$CullTask.run(BasicResourcePool.java:1937)
14:56:03,607 ERROR [STDERR]     at java.util.TimerThread.mainLoop(Timer.java:512)
14:56:03,607 ERROR [STDERR]     at java.util.TimerThread.run(Timer.java:462)
14:56:03,607 ERROR [STDERR] Exception in thread "Timer-9" 
14:56:03,607 ERROR [STDERR] java.lang.NoClassDefFoundError: com/mchange/v2/resourcepool/BasicResourcePool$1DestroyResourceTask
14:56:03,607 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.destroyResource(BasicResourcePool.java:980)
14:56:03,607 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.removeResource(BasicResourcePool.java:1406)
14:56:03,607 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.removeResource(BasicResourcePool.java:1378)
14:56:03,607 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.cullExpired(BasicResourcePool.java:1462)
14:56:03,607 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool.access$1900(BasicResourcePool.java:32)
14:56:03,607 ERROR [STDERR]     at com.mchange.v2.resourcepool.BasicResourcePool$CullTask.run(BasicResourcePool.java:1937)
14:56:03,607 ERROR [STDERR]     at java.util.TimerThread.mainLoop(Timer.java:512)
14:56:03,607 ERROR [STDERR]     at java.util.TimerThread.run(Timer.java:462)
14:56:03,607 ERROR [STDERR] Caused by: java.lang.ClassNotFoundException: com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask
14:56:03,607 ERROR [STDERR]     at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1358)
14:56:03,607 ERROR [STDERR]     at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
14:56:03,607 ERROR [STDERR]     ... 8 more
web-applications
c3p0
jboss-4.2.x
jboss-portal
EN

回答 1

Stack Overflow用户

回答已采纳

发布于 2012-04-27 13:20:55

每当我们在Jboss中热部署war文件时，就会遇到来自c3p0的内存泄漏。

如果在JBoss 4.2 (或任何其他版本的JBoss)中进行热部署，最终会在PermGen池中泄漏内存，服务器将需要重新启动。我不知道有什么解决办法，而且这与c3p0无关。

在开发中，这只是一个小麻烦。在生产中，你根本不应该这样做。

票数 5
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/10350499

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