Java Performance Troubleshooting Tools

SAP provides a number of tools for troubleshooting performance issues in the Java stack. Wily Introscope is one of the best tools to study the internals of the J2EE engine, and it captures and presents graphs on such important areas as heap utilization, garbage collection, thread count utilizations, and response times. In addition to this tool the following dump and memory analysis tools are helpful for diagnosing complex performance issues in the Java stack.

Heap Dump

Heap dump will allow you to understand the usage of the heap size in greater detail and will help to diagnose the root cause of an issue. In order to generate a heap dump, add the parameter -XX:+HeapDumpOnOutOfMemoryError to the Java parameter using the configuration tool. This will automatically write a heap dump file in out-of-memory situations at the following location: