Solving Common Playback Problems | Loadrunner Tutorial pdf

Solving Common Playback Problems

After you create a script, you validate it by running it from VuGen.
Occasionally, a simple playback will fail, even though the recording of the same actions succeeded.
Many applications use dynamic values that change each time you use the application. For example, some servers assign a unique session ID for every new session. When you try to replay a recorded session, the application creates a new session ID that differs from the recorded session ID.
LoadRunner addresses this issue through correlation. Correlation saves the changing values, in our case the session ID, to a parameter. When running the emulation, the Vuser does not use the recorded value instead, it uses the new session ID, assigned to it by the server.
In this lesson you will observe how LoadRunner automatically solves the issue of dynamic values.
In this lesson you will cover the following topics:
➤ Preparing HP Tours for Playback Errors
➤ How do I work with unique server values?