Oracle AD4J is a low overhead, hot pluggable, production ready diagnostics tool for Java applications. It provides deep JVM diagnostics (details on threads, Java methods, line numbers, objects, locks, I/O, CPU, Network and DB waits) in real-time or historically. It can trace end-user requests from Java to DB & vice versa and can analyze Java Memory Leaks. It's users do not need application specific knowledge. It can help solve problems like: •User requests hanging •Database response too slow •Slow applications •Application SLA violated last night •Frequent GC slowing down application •Mid-tier CPU utilization too high