loadrunner 1.what is the difference between "concurrently...

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Ankammarao Maddineedi

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1.what is the difference between "concurrently and simultanously" 2.in correlation function i put ORD=0 what happend..?
 
All users in a Controller Scenario are "Simultaneous", they all login one after the other and may or may not perform the same transaction at the same time. Next, if you consider a Rendezvous scenario, where you are trying to simulate 100 logins in a test application "at the same time instance"- these 100 users are "Concurrent".
 
When you incorporate a correlation function in a script, and while in runtime that func is solved and the resultant extracted in a variable, there is a possibility that the func resolution may result in more than one value. However, you may be looking for a certain value at a certain location in the HTML data. ORD signifies the occurance number or the ORDinal of the multiple values extracted. By default this is 1, and if you specify ORD="ALL", if there are multiple values, then they would be stored in an array.
 
concurrently means same time different tasks are running for example in banking (actsumy 10 nums,dd req 20 num ,fundtrasn100nums are working )this transactions are running at a time ,simultanously means login at a time in the samein the same transaction for examp in bank all the emp's are login at a time aftrer