应用程序导致内存泄漏

Question

Currently working in smartGWT project where it consumes a lot of memory when the application performs any CRUD or Grid loading and refreshing operations and the application deployed in tomcat server 7.0 . I have tried thread specification and Memory restriction in tomcat but it won't works.Could you please suggest way to avoid memory leak. awaiting for your reply.

Answer 1

In order to avoid memory leak. We should get information on the objects allocated on the application. If you are using IBM JDK then JVM will collect javacore, system core and snaptrace when JVM throws OutOfMemory. Until System throws OOM we will not get clear picture on object allocation and de allocation pattern.

For Example: if you take systemcore in middle of the application run time. There are possibilities that GC yet to run to clean dead objects so the current snapshot may not give the full picture of the application allocation. When JVM throws OOM it means GC kicked on and all possible collection of dead objects are taken care so analyzing the existing objects in the heap will reflect the true information on the java heap.

Once you collect logs load the system core in Memory Analyzer tool. https://www.ibm.com/developerworks/java/jdk/tools/memoryanalyzer/ It will help you in identifying leaks.

If you using Oracle JDK please follow http://www.oracle.com/technetwork/java/javase/memleaks-137499.html