Oracle驱动程序内存泄漏-Tomcat

  • Z时代
  • 2024-01-10
  • 分类：问答

我们正在使用tomcat-7.0.33。Spring 3.0.1和JPA使用tomcat

JNDI数据源。使用ojdbc6.jar（最新）在后端使用Oracle 10g。

当我们尝试取消部署应用程序时，某些Oracle类似乎正在泄漏。使用较旧的ojdbc14.jar驱动程序时，我看不到此信息，但是由于要迁移到需要较新驱动程序的Oracle

11g，我们无法使用它们。我猜这是Oracle驱动程序中的错误吗？我有什么办法可以清理这些资源？我试图关闭数据库连接池和其他东西都无济于事…

我最好不使用Tomcat的连接池吗？我们希望服务器连接到数据库，但是如果需要，我们可以自己做…

服务器控制台显示：

17505 INFO org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean - Closing JPA EntityManagerFactory for persistence unit ‘myManager’ 17515 INFO org.apache.tiles.access.TilesAccess - Removing TilesContext for context: org.springframework.web.servlet.view.tiles2.SpringTilesApplicationContextFactory$SpringWildcardServletTilesApplicationContext Dec 06, 2012 6:41:29 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks SEVERE: The web application [/myApp] created a ThreadLocal with key of type [java.lang.ThreadLocal] (value [java.lang.ThreadLocal@1468544]) and a value of type [java.lang.Class] (value [class oracle.sql.AnyDataFactory]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak. Dec 06, 2012 6:41:29 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks SEVERE: The web application [/myApp] created a ThreadLocal with key of type [java.lang.ThreadLocal] (value [java.lang.ThreadLocal@d73b31]) and a value of type [java.lang.Class] (value [class oracle.sql.TypeDescriptorFactory]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak. Dec 06, 2012 6:41:29 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks SEVERE: The web application [/myApp] created a ThreadLocal with key of type [java.lang.ThreadLocal] (value [java.lang.ThreadLocal@13aae39]) and a value of type [java.lang.Class] (value [class oracle.sql.TypeDescriptorFactory]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak. Dec 06, 2012 6:41:29 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks SEVERE: The web application [/myApp] created a ThreadLocal with key of type [java.lang.ThreadLocal] (value [java.lang.ThreadLocal@18443b1]) and a value of type [java.lang.Class] (value [class oracle.sql.AnyDataFactory]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak. Dec 06, 2012 6:41:34 PM org.apache.catalina.startup.HostConfig deleteRedeployResources INFO: Undeploying context [/myApp]

我尝试添加一个ContextListener来手动关闭我们的DBCP连接，但这没有帮助。

InitialContext initial = new InitialContext();
DataSource ds = (DataSource) initial.lookup("java:/comp/env/jdbc/myDS");
if (ds.getConnection() == null) {
    throw new RuntimeException("I failed to find the datasource");
}
LOG.debug("Found datasource.  Closing...");
BasicDataSource bds = (BasicDataSource) ds;
bds.close();

回答：

找出问题所在……Toni提出了一个很好的建议（但是注销驱动程序意味着重新加载应用程序时，该驱动程序不再可用！）。

在我们的案例中，我们不小心将ojdbc6.jar与我们的Web应用程序一起包含在Tomcat /

lib目录中。这很可能导致Tomcat使用我们的类加载器来创建对象。因此，当我们的应用程序被卸载时，Tomcat的DBCP池仍然具有我们应用程序中类的打开句柄。

从我们的WEB-INF / lib中删除ojdbc6.jar解决了该问题。

以上是 Oracle驱动程序内存泄漏-Tomcat 的全部内容， 来源链接： utcz.com/qa/419012.html

回到顶部