If you are undeploying & redeploying a webapp during development (without restarting Tomcat), this can/will happen. If you stop and restart Tomcat, you should avoid the issue.
-----Original Message----- From: Félix Pedrera García [mailto:[EMAIL PROTECTED] Sent: Thursday, October 20, 2005 9:19 AM To: users@tomcat.apache.org Subject: PernGen memory leak with Tomcat 5.5.9 Hi! We are working on a web application using Struts 1.2.7, deployed on Tomcat 5.5.9 on Solaris SunOS 5.8 and JVM 1.5.0_04-b05 and we have the following problem: Sometimes we get an java.lang.OutOfMemoryError: PermGen space and the logs do not say anything more about the problem. We are monitoring the PerGen space with JMap command and we noticed that the PerGen space is always growing up untill it gets the maximum configured PermGen size: -XX:MaxPermSize=256m and then we get the OutOfMemoryError. With JMap -histo we monitor the alive instances in our JVM and we see that, aside of multiple java.lang.String and other similar objects, there are also a lot of DTO objects that we use in the application to transfer data from Action classes to the view (jsp), and we understand that these objects should only be alive while the request is active, but, as we can see looking at the number of these objects, they are still alive. 160576 5018 zyx.mvc.model.DeviceData 116480 3640 zyx.mvc.model.DeviceData 73584 1533 zyx.mvc.model.TestResultByUser 60120 1503 zyx.mvc.model.TestResultData 27440 490 zyx.mvc.model.DeviceDataByUserPattern 15240 381 zyx.mvc.model.Device 14400 300 zyx.mvc.model.TestCaseWithLastResult 13032 543 zyx.mvc.model.Technology 12576 262 zyx.mvc.model.TestCase 12520 313 zyx.mvc.model.TestGroup 10656 444 zyx.mvc.model.Service 4848 101 zyx.mvc.model.TestCase 4320 108 zyx.mvc.model.Device 3808 68 zyx.mvc.model.DeviceDataByUserPattern 1120 28 zyx.mvc.model.TestGroup 920 23 zyx.mvc.model.User 840 15 zyx.mvc.model.TechnologiesReportData 600 15 zyx.mvc.model.Firmware 504 7 zyx.mvc.forms.TestResultsForm 320 8 zyx.utils.TestCasesNavigator 240 10 zyx.common.ActivityLogDBAccess 192 3 zyx.mvc.forms.ResultsByServiceForm 160 5 zyx.mvc.model.PreviousTestResultData 160 5 zyx.utils.Text2HTMLTag 136 17 zyx.database.DBManager 128 2 zyx.mvc.forms.ResultsByTechForm 112 14 zyx.database.DBDevice 1 zyx.mvc.forms.ResultsByServiceForm 64 1 zyx.mvc.forms.ResultsByTechForm 56 1 zyx.mvc.ControlServlet 56 1 zyx.database.pool.DBConnectionPool 56 1 zyx.sms.SMSServlet 56 1 zyx.mvc.ControlServlet Why these resources are not destroyed? We have been looking at the http://issues.apache.org/bugzilla/show_bug.cgi?id=14042 and since this bug is fixed from struts version 1.2.7, we think this can not be the problem. Any idea? Thanks in advance, -- Félix Pedrera García --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
