It seems at this point, then you might want to consider training for both performance testing and LoadRunner. The links provided represent quite a bit of information. What are some specific questions you have about any of that information.
[ QUOTE ]
Can someone tell me how to do perf testing of J2EE app?
Also, what LoadRunner monitors to use while testing?
Thanks for your advice.
[/ QUOTE ]
I agree with Jake's response.. this is a tiny question that would require thousands of pages to answer with ANY sort of accuracy.
the simple answer is "get some training, read lots of books, do lots of research online".
even asking what you should monitor is relatively impossible to anwser, as there hundreds of stats and metrics to look at.. which ones are important depends on the conext of your specific application.
at a very very general level, you want to look at processor, disk, memory, and network utilization.. there are many ways to measure each.. and beyond that, there are many J2EE specific things to look for.
Often, before setting up monitors, I like work with the individuals that support that part of the architecture and get their feedback on what is important to them (and why). This allows me to be sure that I've included the relevant data in my graphs and reports and also opens up dialogue to help further my understanding of not only the architecture but, as Corey states, the context in which it has been implemented.
SoCalGal - Defender of end user response times!