JMeter cannot used for performance testing Oracle EBS (NCA) protocol. Somebody has to write a wrapper to understand the java serialization requests that the protocol uses and implement a high level GUI like wrapper that loadrunner provides.
When it comes to R12, it gets interesting.. You can only opt for heavyweights like LR, Silk etc. From my experience, only loadrunner can support "all possible" form sever connection modes in oracle EBS. Other heavyweights might have added the required support.
So, selecting a tool for this activity depends on the configuration of your oracle apps server and the associated risks.
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Can Somebody tell me how to write a wrapper to understand the java serialization requests that the NCA protocol uses in Loadrunner. It will be very useful if u guys come up with a solution. Any help is appreciated.