Simone, On 10/28/15 4:02 AM, simone.rodenbach....@devk.de wrote: > I tried to google for the driver and classloader and found nothing that > helped me :-(
> I can only provide you with this information: > > I configured the datasource in the context.xml > > <Resource name="jdbc/xxx" auth="Container" type="javax.sql.DataSource" > factory="org.apache.commons.dbcp.BasicDataSourceFactory" Why are you overriding Tomcat's default DataSourceFactory with another one? > maxActive="10" minIdle="2" maxIdle="10" maxWait="10000" > minEvictableIdleTimeMillis="120000" timeBetweenEvictionRunsMillis="60000" > username="xxx" > password="xxx" > driverClassName="com.ibm.db2.jcc.DB2Driver" > url="xxx;" > validationQuery="select 1 from sysibm.sysdummy1" /> > > > The spring bean > > <jee:jndi-lookup id="dataSource" jndi-name="java:/comp/env/jdbc/xxx" > expected-type="javax.sql.DataSource" /> > > I created a test project. Because oft hat I'm sure that I don't start a > thread. It doesn't have to be *your code* starting the thread directly. JDBC drivers have a habit of launching their own cleanup threads and then not offering any interface to stop them. > But the log says: > > Okt 28, 2015 8:41:15 AM org.apache.catalina.loader.WebappClassLoader > clearReferencesThreads > SCHWERWIEGEND: The web application [/test] appears to have started a thread > named [Timer-0] but has failed to stop it. This is very likely to create a > memory leak. > > I think this thread is started from > org.apache.commons.dbcp.BasicDataSourceFactory. Nope, BasicDataSourceFactory doesn't have the word "thread" anywhere in its code: http://svn.apache.org/viewvc/commons/proper/dbcp/tags/DBCP_1_4/src/java/org/apache/commons/dbcp/BasicDataSourceFactory.java?view=markup > I removed the db2cc4.jar to get an exception to inspect from where the driver > is loaded and got: > > Caused by: java.lang.ClassNotFoundException: com.ibm.db2.jcc.DB2Driver > at > org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1858) > at > org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1709) > at > org.apache.commons.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1420) That only tells you where the driver is loaded. It doesn't tell you when the thread was launched. After shutting-down your web application (and getting the warning about the Timer-0 thread), can you take a thread dump and show us the stack trace for the Timer-0 thread? -chris --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
