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Load Runner Interview Questions & Answers - Learning Mode

Load Runner Interview Questions & Answers - Learning Mode

HPE LoadRunner is a software testing tool from Hewlett Packard Enterprise. It is used to test applications, measuring system behaviour and performance under load. HPE acquired LoadRunner as part of its acquisition of Mercury Interactive in November 2006. The LoadRunner script language is ANSI C. It helps to know the C language, but the scripts are generated and manipulated by LoadRunner, so there is usually not need to directly edit the code. There is also a icon script view which completely hides the C code.

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Load Runner Interview Questions & Answers - Learning Mode
Try Load Runner Interview Questions & Answers - Exam Mode
Question: I am currently using Merchury LoadRunner 7.6 V to test Oracle 11i application. I selected Oracle NCA and Web protocols and recorded a basic script to query an order. I recorded in HTML mode. When I replayed back, it runs successfully sometimes and other times throws error message saying

Action.c(72): Error -24998 : nca_obj_type("607") failed, Window or object is not displayed.
The window currently in focus: "Error"

vuser_end.c(4): Error -24998 : nca_menu_select_item("Sales Orders","File;Close Form") failed, Window or object is not displayed.
The window currently in focus: "Error".

I co-related icx_ticket and played back. But still getting the same error.
I would like to know from you in order to resolve this issue, do I need to do some co-relation or it needs some basic settings in Oracle Apps before recording an action in LoadRunner.

Answer: No answer available currently.
Question: When load runner is used?

Answer: As we all know that functionality testing helps ensuring that the product/application works fine according to the requirements and the client verifications are validated. This is always done by single user and depending upon the complexity of the application or the product, many test cases are written to ensure that the components functions as intended, but when the application passes this TollGate of functional testing, there is always question of what will happen to the application/product whe Source:
Question: What are the Monitors in LoadRunner?

Answer: 1. application server monitors,

2. web server monitors,

3. database server monitors and

4. network monitors. They help in finding out the troubled area in our scenario which causes increased response time. The measurements made are usually performance response time, throughput, hits/sec, network delay graphs, etc.

Question: I am facing the active Screen Problem in loadrunner.
While runnning the script active screen pop up is dispalying, always asking for username and password.
This popup having OK,Cancel and HELP buttons.
After clicking any OK or CANCEL button , then only it is moving to next step.
What can i do? Please give any suggestion...

Answer: You are suppose to cancel that pop up, it only happens when you are running the script in the Vugen, you should not be having the issue when are actually running the script from the controller. Source:
Question: What are all the types of correlation?

Answer: Manual & Automatic Co-relation
Manual correlation? - Correlation is used to obtain data which are unique for each run of the script and which are generated by 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 Source:
Question: What protocols does LoadRunner support?

Answer: The Vuser types are divided into the following categories:
➤ All Protocols: a list of all supported protocols in alphabetical order.
➤ Application Deployment Solution: For the Citrix protocol.
➤ Client/Server: For DB2 CLI, DNS, MS SQL, ODBC, Oracle (2-tier), Sybase
Ctlib, Sybase Dblib, and Windows Sockets protocols.
➤ Custom: For C templates, Visual Basic templates, Java templates,
Javascript and VBscript type scripts.
➤ Distributed Source:
Question: How would you plan, execute and analyze a load runner test case specifically to Retek modules like RMS? If you want to retest a Load Runner test case using the same data (high volume), how would you plan your test case?

Answer: But, to use the same test data, you should touch base with your DBA to take back up before the test and restore the back up after the test.
Question: How to conduct Regression testing using LoadRunner?
Give me explanation about HTTP protocols? How we are working on HTTP protocols?
In goal oriented Scenarios LoadRunner provides five different types of goal-oriented scenarios, if a tester can work on five types of scenarios or any one type of scenarios?
Suppose loadrunner controller is in different place, Vuser generator is one more place we r working in another place, is loadrunner 7.2 or higher versions of loadrunner provides this facility work (that is using desk top to work on load testing) or not?
What are the types of checkpoints is available in LoadRunner? How to work on database check points?
While the script is running we find some values that may be need to be correlated? Is it possible to do manual correlation for those values?
After completion of functionality testing what makes us to know whether the product is ready for performance testing or not (not related to task distribution diagram and transaction profile document)?

Answer: Load runner is a performance testing tool. you cannot do regression testing with load runner.yo ucan do manual correaltion by recodring the same script 2 times. compare them using windiff utility which comes with LR and look for the values which need to be correlated. Source:
Question: What is VuGen.

Answer: VuGen is a loadrunner component used to generate vuser script i.e here we record a business operation performed by a single user.
Question: I have an application under test which is of 3-tier architecture, it has a web server, app server, database server, basically loadrunner monitors the load on the webserver when a script is run on the controller. how to make it monitor the load on the app server or on the database server?

Answer: As per my understanding and experience, I have encountered App servers with inbuilt webserver so we do not have two different servers as such. I have worked on Weblogic 6 and 8 and Pramati 4.1SP2. In these two app servers we do not have web server as an extra component so on a single machine whereever we have App server, we have web server too.

We have the QA environment setup on Linux. In order to monitor the load on DB server, we use SAR software. This s/w monitors the load on DB serve Source:
Question: What is .lrs.

Answer: Load runner save the information in a scenario files. Source:
Question: What is load runner?

Answer: Load Runner is an Load automation Tool used to determine the Load of an application, An Product of Mercury. Usage of this Tool we can find the Load of an Application and the Bottlenecks of the same of different Layers.<br><br>Though it is costly we can get more precise information of the above. It is comprised of Generator, Controller & Analysis. <br> Source:
Question: Can anyone please tell me "The procedure followed in load runner.How should I start using Load Runner"

Answer: Here is the common process?in ?Load Runner :

1. Plan the Load Test

2. Create Web Virual Users

3. Create Scenarios

4.?Run Scenarios

5. Analyze the System Under Load.

Question: What is Elasped Time in Load Runner?

Answer: In LoadRunner Analysis, you have to set Elapsed time for getting transaction response time related to elapsed time. For this you have to use Filter Icon in the Analysis result file. For ex: the test run is 1 hr but you want the transaction response time from 25 min to 55 min in that one hr. In Elapsed time you have to set FROM and TO period so that you can get the transaction response time in that period only........ Source:
Question: What is running virtual user graph.

Answer: When you run the scenario, by default Virtual user graph, throughput and hits per sec graphs will be displayed. In the first one you can find out how many virtual users are running the application and the time taken by them to finish the operation.
Question: How to test GUI scripts for more than 1 Vusers?

Answer: More than one Vuser can be tested using the Load runner Controller.We can simulate vusers using this tool and run a scenario using the controller and test scripts based on many vusers Source:
Question: Can we test j2me application with load runner ?

Answer: What is load testing? - Load testing is to test that if the application works fine with the loads that result from large number of simultaneous users, transactions and to determine weather it can handle peak usage periods.
What is Performance testing? - Timing for both read and update transactions should be gathered to determine whether system functions are being performed in an acceptable timeframe. This should be done standalone and then in a multi user environment to determine the effect Source:
Question: How can set the number of virtual users in Load Runner?

Answer: When Creating Scenario in Controller we have to add the particular script which we want to run. There we have to set the number of Vusers to run for that script. but you have to add Vusers depending on the ur LoadRunner license for how many Vusers it supports

Question: What is extended log in load runner?

Answer: We have to set run time settings before run the script, in run time settings we have to set log ( there are two options, 1 is send messages when error occurs and second one is always send messages). In second option we have to select whether it is standard log or extended log. In standard log it will create log file with some details(information) but in extended log we can select parameter subsitituion, data retured by server and advanced trace, based on our selection only the log files will be Source:
Question: What is vuser-init section .

Answer: It records before the actual action is performed.It records the pre operations or intial operations before actual actions done.

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