RE: Memory leak in Tomcat
Ingrid, I am not on the tomcat developer committer list so my reply is just an FYI from my own experience. I saw unstable performance myself in a very similar deployment of Struts applications similar to yours. I too thought there was a memory leak and there may be, but I don't think it is in the applications themselves. The behavior I saw, led me to think it was related to socket allocation as after a period of time my system began to complain and slow down and other socket related programs began to complain about timeouts, etc. I found that my tomcat needed to use virtual memory to avoid out of memory exceptions. I added physical memory and the problems all but went away, however it still occurs just less frequently. I am using j2sdk1.4.2_09 Tomcat-5.0.28 On Windows XP Pro sp1 Michael Oliver CTO Alarius Systems LLC 6800 E. Lake Mead Blvd, #1096 Las Vegas, NV 89156 Phone:(702)643-7425 Fax:(702)974-0341 *Note new email changed from [EMAIL PROTECTED] -Original Message- From: Ingrid Morterud Rosvall [mailto:[EMAIL PROTECTED] Sent: Monday, September 12, 2005 1:00 PM To: tomcat-user@jakarta.apache.org Subject: Memory leak in Tomcat Hello. We are running an application on Tomcat 4.1.30, and java 1.4.2. Our application is using the struts framework with jsp's, and cocoon to render the xml's. There seems to be a major memory leak at startup - the application seems to constantly be using between 40 - 45 mb of the memory. We also have some memory leak during runtime, when users log on and starts using the application. So far we have not been able to find anything in our code review that will explain these memory leaks, and when we monitor the memory used, there is no obvious reason, nor is there any connection with how the users use our application and the amount of memory being used. We would highly appreciate any help on this topic, and any tips and hints you can provide us with. Ingrid and Tommy -- I am using the free version of SPAMfighter for private users. It has removed 4102 spam emails to date. Paying users do not have this message in their emails. Try www.SPAMfighter.com for free now! - 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]
RE: putting files with webdav
Look in the /webapps/webdav/WEB-INF/web.xml You should see where you need to uncomment things to enable writing. Michael Oliver CTO Alarius Systems LLC 6800 E. Lake Mead Blvd, #1096 Las Vegas, NV 89156 Phone:(702)643-7425 Fax:(702)974-0341 *Note new email changed from [EMAIL PROTECTED] -Original Message- From: Hugo Osorio [mailto:[EMAIL PROTECTED] Sent: Monday, September 05, 2005 8:35 AM To: tomcat-user@jakarta.apache.org Subject: putting files with webdav Hello everybody looking for help, i need to use webdav component in Tomcat 5.0, i am using FreeBSD 4.11 stable I have connected Dreamweaver, and DAV Explorer to the http://192.X.X.X:8080/webdav it do retrieves content, and i can get files, But.. I cannot put files on it.. it says the access is denied.. What do i have to do in order to change this so it permit me to transfer files? thank you - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: question about load-on-startup in web.xml
If I were doing it I would put a singleton class in the /common/lib/ that had a Hashtable and in my application's startup I would get the singleton and have the first application I want to load put a string loading (or whatever) in the Hashtable of the singleton with the key webappY. The second webappX get the singleton and look for webappY/loading. If it is still there sleep and check again later. When webappY is finished starting it removes the 'loading' from the Hashtable of the singleton and when webappX sees it is gone, it continues. Michael Oliver CTO Alarius Systems LLC 6800 E. Lake Mead Blvd, #1096 Las Vegas, NV 89156 Phone:(702)643-7425 Fax:(702)974-0341 *Note new email changed from [EMAIL PROTECTED] -Original Message- From: Annie Wang [mailto:[EMAIL PROTECTED] Sent: Wednesday, May 11, 2005 3:47 PM To: Parsons Technical Services; Tomcat Users List Subject: Re: question about load-on-startup in web.xml i tried putting in a sleep in my servlet's init method, but $CATALINA_HOME/logs/catalina.out seems to indicate that tomcat waits for it to initalize.. in my catalina.out, i have: May 11, 2005 2:12:06 PM org.apache.catalina.core.StandardHostDeployer install INFO: Installing web application at context path /webappX from URL file:/jakarta-tomcat/webapps/webappX ***webappX***start init ***webappX***end init May 11, 2005 2:12:06 PM org.apache.catalina.core.StandardHostDeployer install INFO: Installing web application at context path /webappY from URL file:/jakarta-tomcat/webapps/webappY any one know if there's a way to make webappY get installed before webappX? what determines the install order? i thought it was load-on-startup in the web.xml file, but maybe that affects the ordering of servlet initalization within a web application (if the web application has multiple servlets), but not the ordering of web application installation on tomcat startup. thanks. -annie On 5/10/05, Annie Wang [EMAIL PROTECTED] wrote: hi doug, yup, was thinking along similar lines. just wasn't sure if there was some setting i wasn't aware of to do what i'm looking for. thanks. -annie On 5/10/05, Parsons Technical Services [EMAIL PROTECTED] wrote: I may be off base on this one but I think that once Tomcat fires off the init method it doesn't care or monitor the progress of the servlet. Just think, some servlets may take several minutes to finish. If other apps had to wait then it could take a long time to get the server started. Now as for a solution I am really speculating here (hopefully someone can educate both of us). I would look at a wait statement in the init method to pause the second app's servlet until the first one is done. Simply time the first app's servlet and set it for a little more. Hopefully someone will set me straight if I am off base here. Doug - Original Message - From: Annie Wang [EMAIL PROTECTED] To: tomcat-user@jakarta.apache.org Sent: Tuesday, May 10, 2005 6:59 PM Subject: question about load-on-startup in web.xml hi, regarding the load-on-startup tag in web.xml: say i have 2 web apps (webapp1 and webapp2). if i configure webapp1's servlet to have load-on-startup1/load-on-startup and webapp2's servlet to have load-on-startup100/load-on-startup, does this mean that tomcat will init webapp1's servlet first and once that's done, it'll init webapp2's servlet? basically, i want both web app's servlets to auto initialize on tomcat startup, but i want webapp2's servlet to initialze only after webapp1's servlet has finished initialization. when i use the above load-on-startup settings, webapp2's servlet seems to initialize before webapp1's servlet has finished initialization. thanks. -annie - 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] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
InvocationTargetException
I am running Tomcat 5 on XP and after deploying a new war file, which worked, and was the only change I made, the next time I rebooted the machine (after all it is XP) this is what I get: 156593 INFO [main] core.StandardHostDeployer - Processing Context configuration file URL file:C:\Program Files\Apache Software Foundation\Tomcat 5.0\conf\Catalina\localhost\balancer.xml 157015 ERROR [main] modeler.Registry - Null component Catalina:type=JspMonitor,WebModule=//localhost/balancer,J2EEApplication=none,J2EEServer=none 157031 ERROR [main] digester.Digester - End event threw exception java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.apache.commons.beanutils.MethodUtils.invokeMethod(MethodUtils.java:252) at org.apache.commons.digester.SetNextRule.end(SetNextRule.java:208) . . . at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425) Caused by: java.lang.NoSuchMethodError: org.apache.log4j.Category.log(Ljava/lang/String;Lorg/apache/log4j/Level;Ljava/lang/Object;Ljava/lang/Throwable;)V at org.apache.commons.logging.impl.Log4JCategoryLog.debug(Log4JCategoryLog.java:94) at org.apache.catalina.session.ManagerBase.init(ManagerBase.java:633) at org.apache.catalina.session.StandardManager.start(StandardManager.java:639) and further down 158062 INFO [main] core.StandardHostDeployer - Processing Context configuration file URL file:C:\Program Files\Apache Software Foundation\Tomcat 5.0\conf\Catalina\localhost\manager.xml 158062 INFO [main] core.StandardHostDeployer - Processing Context configuration file URL file:C:\Program Files\Apache Software Foundation\Tomcat 5.0\conf\Catalina\localhost\manager.xml 158375 ERROR [main] modeler.Registry - Null component Catalina:type=JspMonitor,WebModule=//localhost/manager,J2EEApplication=none,J2EEServer=none 158375 ERROR [main] digester.Digester - End event threw exception java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) . . . at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425) Caused by: java.lang.NoSuchMethodError: org.apache.log4j.Category.log(Ljava/lang/String;Lorg/apache/log4j/Level;Ljava/lang/Object;Ljava/lang/Throwable;)V at org.apache.commons.logging.impl.Log4JCategoryLog.debug(Log4JCategoryLog.java:94) at org.apache.catalina.session.ManagerBase.init(ManagerBase.java:633) at org.apache.catalina.session.StandardManager.start(StandardManager.java:639) Is this an issue with the version of log4j.jar or a class loader issue or is there a corrupt jar I should replace? Loosely Coupled Mike Oliver CTO Alarius Systems LLC 6800 E. Lake Mead Blvd Apt 1096 Las Vegas, NV 89156 [EMAIL PROTECTED] [EMAIL PROTECTED] IM: [EMAIL PROTECTED] http://www.alariussystems.com/ tel: fax: mobile: (702)643-7425 (702)974-0341 (518)378-6154 Add me to your address book... Want a signature like this?
Common vs. Shared
I am quite sure this has been asked and answered but I googled a bunch of combinations and didnt find the answer, so I am sure someone here will know and share. What is the difference between the /common/ and /shared/ I understand this is a class loader issue, and I have read the comments in catalina.properties. What would go into common that wouldnt go into shared and vice versa? If a jar is in /common/lib/ and a different version of that jar is in /shared/lib/ what will be the effect? Similarly, if I modify catalina.properties and add something to common that is already in shared, etc. Understanding the relationship between common and shared and the intended use thereof should be of interest to more than just me. Ollie Loosely Coupled Mike Oliver CTO Alarius Systems LLC 6800 E. Lake Mead Blvd Apt 1096 Las Vegas, NV 89156 [EMAIL PROTECTED] [EMAIL PROTECTED] IM: [EMAIL PROTECTED] http://www.alariussystems.com/ tel: fax: mobile: (702)643-7425 (702)974-0341 (518)378-6154 Add me to your address book... Want a signature like this?
RE: Common vs. Shared
Oh I completely agree it is bad practice, but alas I must deal with applications that are not my design and dealing with these conflicts is a royal pain in my non-royal ass. Michael Oliver CTO Alarius Systems LLC 6800 E. Lake Mead Blvd, #1096 Las Vegas, NV 89156 Phone:(702)643-7425 Fax:(702)974-0341 *Note new email changed from [EMAIL PROTECTED] -Original Message- From: Caldarale, Charles R [mailto:[EMAIL PROTECTED] Sent: Thursday, May 05, 2005 1:29 PM To: Tomcat Users List Subject: RE: Common vs. Shared From: Michael Oliver [mailto:[EMAIL PROTECTED] Subject: Common vs. Shared What is the difference between the /common/ and /shared/ I understand this is a class loader issue, and I have read the comments in catalina.properties. But have you read the actual documentation? In particular: http://jakarta.apache.org/tomcat/tomcat-5.5-doc/class-loader-howto.html including this rather descriptive diagram: Bootstrap | System | Common / \ Catalina Shared / \ Webapp1 Webapp2 ... If a jar is in /common/lib/ and a different version of that jar is in /shared/lib/ what will be the effect? Trouble, usually. Anytime you have the same class files in multiple places in a single path in the hierarchy, you run the risk of conflicts and lots of NCDFE problems. Very, very bad practice. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - 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]
