Ajax TruClient protocol was introduced to LoadRunner in version 11. This protocol is alternative solution in the level of Ajax Click & Script protocol, for applications that works under FireFox and scripting fails in Ajax Click & Script.

Robust support for different Ajax control (such as slider, calendar, accordion etc.).
Works on any framework. For example GWT, YUI, jQuery, ZX Ajax ExtJS etc.
Does not require correlations.
Rich and visual UI.

Works in the browser - developing the script interactively with the application, view added steps while recording and ability to check and improve identification.
Insight into client behavior using multiple transactions based on different events such as network complete, DOM loaded, document loaded etc.

What are the limitations of TrueClient protocol while load testing the application?
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Advantages:

1) True client scripting is very easy to do it in short period of duration for any application

2) It has no correlations and very simple to handle

3) It actually develops in the way exactly the end user is using the application

Dis Advantages

If there is login there will be logout , so this has a dis advantages.

Having a memory issue when the users are growing for application.