On 18/08/2014 07:55, Thakkilapati, Nagaraja wrote: > Hi, > > We have a web application (XCP) which internally uses our java library > implementaiton-dfc.jar (the dfc.jar contains API's to access our Documentum > functionality). This java library internally uses timer threads which > performs the activities need to be executed periodically and demon threads > for clean-up activities. > > We noticed the tomcat runs into OOM:PermGen issue when we use our web > application which uses the java library (dfc.jar API's) in the below use case: > Use Case: > 1. Access a Documentum repository object (size will be in KB's) using the > Documentum web application-XCP. > 2. Undeploy the web application and redeploy it. > 3. Repeat step-1 and 2 couple of times, OOM:PermGen issue can be noticed. > > Trouble Shooting & Analysis Done: > > > 1. I have tried to comment out all the Timer and Demon threads in our > java library (i.e. inside dfc.jar) and tried to perform the use case > mentioned above and still noticed the issue with Tomcat App server. > > 2. Attached the memory profiler to Tomcat and tried to find the > shortest GC path, the profiler shows the shortest GC to Tomcat threads. > > 3. Tried to reproduce the issue using other app servers like WAAS and > was not able to find any issues. > > > It appears to me that this is an issue specific to Tomcat app server, can you > please let me know whether you have noticed the similar issues in the past > and if yes, please specify any workaround/fix available for the same?
Fix your broken web application. http://people.apache.org/~markt/presentations/2010-11-04-Memory-Leaks-60mins.pdf Mark --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
