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What is correlation? How we will do that in Load r

Printed From: One Stop Testing
Category: Testing Tools @ OneStopTesting
Forum Name: LoadRunner @ OneStopTesting
Forum Discription: LoadRunner is a performance and load testing product by HP / Mercury Interactive for examining system behavior and performance, while generating actual load.
URL: http://forum.onestoptesting.com/forum_posts.asp?TID=670
Printed Date: 18Jul2025 at 1:37am


Topic: What is correlation? How we will do that in Load r
Posted By: Rupa
Subject: What is correlation? How we will do that in Load r
Date Posted: 04Apr2007 at 5:39am
Correlated data is data which is sent to the Client from the http://www.geekinterview.com/Interview-Questions/Testing/LoadRunner/page15# - Server , and later sent back to the Serv...


Replies:
Posted By: sudhindra
Date Posted: 02Jan2008 at 2:35am

Difference between automatic correlation and manual correlation?


Correlation is used to obtain data which are unique for each run of the script and which are generated by nested queries. Correlation provides the value to avoid errors arising out of duplicate values and also optimizing the code (to avoid nested queries). Automatic correlation is where we set some rules for correlation. It can be application server specific. Here values are replaced by data which are created by these rules. In manual correlation, the value we want to correlate is scanned and create correlation is used to correlate.

Posted By: rekha_harsha
Date Posted: 05Jan2008 at 3:40am

Hi everybody,

i am using loadrunner 8.0. Will u anybody please explain me total steps about correlation or please provide some tutorial for me
 
Thankyou
 

Posted By: shailajakishore
Date Posted: 12Feb2008 at 10:35am

hi,i am giving the steps for manual correlation.

1.First record d two identical scripts...
i.e,record some selected actions and save it with some name...script-1.
do the same actions again....save that script with some other name..script-2.
 
2.After saving the 2nd script,  
in vugen go to ' tools/ comapare with vugen' select the first script-1..for comparision.
 
3.then u will get 'windiff' tool...and highlights the different rows exists ...notedown all those ...analyse which will be the dynamicvalue...
 
4.then search for that dynamic value in generation log ...findout the transactionid...under which step it's occuring...there...u have to insert...'web-re-save-param" function...run it with required no.of users...
that's it...ok
bye...shailaja

Posted By: santoshsapkal
Date Posted: 14May2008 at 6:58am
During Correlation data is stored which is generally not stored on client machine every time during nested queries...


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