1.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.

2.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 of multiple transactions on the timing of a single transaction.
Can We do performance testing manually?
Yes you can do Performance testing manually. For this you should open many active sessions of the application and should test it out. It also depends on what type of performance test you want to do. However, in general you can judge the active sessions, number of DB connections open, number of threads running (I have taken JAVA based Web applications as eg), the amount of the CPU time and memory being used by having a performance viewer. You can have IBM Tivoli Performance viewer. It is available for trial version also. Usually the the test is done by deploying the application on the server and accessing the application from multiple client machines and making multiple threads to run. The performance viewer should of course be installed on the server.
yes you can do performence test manually.for this you can open many active sessions application and should test it out
What is load runner?
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.Though it is costly we can get more precise information of the above. It is comprised of Generator, Controller & Analysis.

3.Did u use LoadRunner? What version?
 Yes. Version 7.2.

How many types of graphs have Load Runner ?
There are 5 graphs on Load Runner.
1) Hits per second graph
2) pages download per second graph
3) Transaction response time (under load) graph
4) Transaction response time (percentile) graph and
5) Network delay time graph

4.Explain the Load testing process?

Step 1: Planning the test. Here, we develop a clearly defined test plan to ensure the test scenarios we develop will accomplish load-testing objectives. 
Step 2: Creating Vusers. Here, we create Vuser scripts that contain tasks performed by each Vuser, tasks performed by Vusers as a whole, and tasks measured as transactions.
 Step 3: Creating the scenario. A scenario describes the events that occur during a testing session. It includes a list of machines, scripts, and Vusers that run during the scenario. We create scenarios using LoadRunner Controller. We can create manual scenarios as well as goal-oriented scenarios. In manual scenarios, we define the number of Vusers, the load generator machines, and percentage of Vusers to be assigned to each script. For web tests, we may create a goal-oriented scenario where we define the goal that our test has to achieve. LoadRunner automatically builds a scenario for us.
 Step 4: Running the scenario.
We emulate load on the server by instructing multiple Vusers to perform tasks simultaneously. Before the testing, we set the scenario configuration and scheduling. We can run the entire scenario, Vuser groups, or individual Vusers. 
Step 5: Monitoring the scenario.
We monitor scenario execution using the LoadRunner online runtime, transaction, system resource, Web resource, Web server resource, Web application server resource, database server resource, network delay, streaming media resource, firewall server resource, ERP server resource, and Java performance monitors.
 Step 6: Analyzing test results. During scenario execution, LoadRunner records the performance of the application under different loads. We use LoadRunner’s graphs and reports to analyze the application’s performance.
How can we execute winrunner script in load runner...is it possible or not?is yes how we can execute?
Yes we can execute winrunner script in load runner. In VuGen u hv option in files to Add File to Script. Browse the script of winrunner and add to VuGen.
Then you can create a scenario in what ever way you want it.
When load runner is used?
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 when multiple users are accessing them. Here comes the load testing which ensures that the application performs without breakdown for the required users as indicated in the CS ( customer specificatio ) document. For this we need to ensure proper loadtesting is done using automation as we all know we cannot ask 50 real users sitting b4 a computer and click is done, moreover all the areas of concerned will not be covered. One such loadtesting automated tool is loadrunner which is used to emulate the behaviour of real time user. Here the loadrunner is used, there are other load testing tools in the market but Mercury stand in forefront.

5.When do you do load and performance Testing?
 We perform load testing once we are done with interface (GUI) testing. Modern system architectures are large and complex. Whereas single user testing primarily on functionality and user interface of a system component, application testing focuses on performance and reliability of an entire system. For example, a typical application-testing scenario might depict 1000 users logging in simultaneously to a system. This gives rise to issues such as what is the response time of the system, does it crash, will it go with different software applications and platforms, can it hold so many hundreds and thousands of users, etc. This is when we set do load and performance testing.

6.What are the advantage of using load runner?
The load runner advantages are
1.loadrunner reduces the personnel requirement by replacing the humun users with the vusers(virtual users).
2.numarous  vusers run on a single computer loadrunner reduces the hardware requirements.
3.it allows you to effectively control all vusers from single point of control

7.What are the components of LoadRunner?
 The components of LoadRunner are The Virtual User Generator, Controller, and the Agent process, LoadRunner Analysis and Monitoring, LoadRunner Books Online.

8.What Component of LoadRunner would you use to record a Script?
 The Virtual User Generator (VuGen) component is used to record a script. It enables you to develop Vuser scripts for a variety of application types and communication protocols.

9.What Component of LoadRunner would you use to play Back the script in multi user mode? 
The Controller component is used to playback the script in multi-user mode. This is done during a scenario run where a vuser  script is executed by a number of vusers in a group.

10.What is a rendezvous point?
 You insert rendezvous pointsinto Vuser scripts to emulate heavy user load on the server. Rendezvous pointsinstruct Vusers to wait during test execution for multiple Vusers to arrive at a certain point, in order that they may simultaneously perform a task. For example, to emulate peak load on the bank server, you can insert a rendezvous point instructing 100 Vusers to deposit cash into their accounts at the same time.

11.Where you insert the rendezvous point .
Rendezvous point insert in to the script to calculate the peak load of the server. Syntax. lr-rendezvous("rendezvous name"). we insert rendezvous point in to script to increase heavy load on the server and check the behavior of the application at the time.

12.What is a scenario?
A scenario defines the events that occur during each testing session. For example, a scenario defines and controls the number of users to emulate, the actions to be performed, and the machines on which the virtual users run their emulations.

13.How to identify the scenario in Loadrunner?
Basically what can be done in this situation is that we can:
Prioritize them according to most used scenarios
Select those that would cause heavy database usage.
Select those scenarios that mostly emulate the user when the application usually go online.

14.How to create a host list for a scenario.
1-install remote command luncher on every machine.
2-add the name of the host to the host lists.
3-set attributes for each host.
4-select which hosts will take part in the scenario.

15.What is vuser script?
Action that a vuser performs during a scenario are described in a Vuserscript.It also has function which record the performance of the sever during the scenario.

16.What do you mean by creating vuser script?
Capturing the end-user activities into  automated scripts.

17.What is VuGen.
VuGen is a loadrunner component used to generate vuser script i.e here we record a business operation performed by a single user.

18.How vugen create a vuser script.
By  recording the activity between client and server.

19.Explain the recording mode for web Vuser script?
We use VuGen to develop a Vuser script by recording a user performing typical business processes on a client application. VuGen creates the script by recording the activity between the client and the server. For example, in web based applications, VuGen monitors the client end of the database and traces all the requests sent to, and received from, the database server. We use VuGen to: Monitor the communication between the application and the server; Generate the required function calls; and Insert the generated function calls into a Vuser script.

20.Why do you create parameters?
 Parameters are like script variables. They are used to vary input to the server and to emulate real users. Different sets of data are sent to the server each time the script is run. Better simulate the usage model for more accurate testing from the Controller; one script can emulate many different users on the system.

21.What is 'Correlation' in Loadrunner?
Correlation is the identifying and resolving data which are , unique for each run of the script or each iteration of an action.

These dynamic data differ in each replay from the original recording and causes the replay to fail.
Correlation is a concept in load runner to handle dynamic values which are generated from server.

we have 2 types of correlations
-Manual Correlation
-Automated correlation

Ex:server ID -generating from server uniquely for every request if we executing script with multiple users then here we requires correlation.

22.What is correlation? Explain the 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.

23.How do you find out where correlation is required? Give few examples from your projects?
Two ways: First we can scan for correlations, and see the list of values which can be correlated. From this we can pick a value to be correlated. Secondly, we can record two scripts and compare them. We can look up the difference file to see for the values which needed to be correlated.  In my project, there was a unique id developed for each customer, it was nothing but Insurance Number, it was generated automatically and it was sequential and this value was unique. I had to correlate this value, in order to avoid errors while running my script. I did using scan for correlation.

24.Where do you set automatic correlation options?
Automatic correlation from web point of view can be set in recording options and correlation tab. Here we can enable correlation for the entire script and choose either issue online messages or offline actions, where we can define rules for that correlation. Automatic correlation for database can be done using show output window and scan for correlation and picking the correlate query tab and choose which query value we want to correlate. If we know the specific value to be correlated, we just do create correlation for the value and specify how the value to be created.

25.What is a function to capture dynamic values in the web Vuser script?
 Web_reg_save_param function saves dynamic data information to a parameter.

26.When do you disable log in Virtual User Generator, When do you choose standard and extended logs?
Once we debug our script and verify that it is functional, we can enable logging for errors only. When we add a script to a scenario, logging is automatically disabled. Standard Log Option: When you select
Standard log, it creates a standard log of functions and messages sent during script execution to use for debugging. Disable this option for large load testing scenarios. When you copy a script to a scenario, logging is automatically disabled Extended Log Option: Select
extended log to create an extended log, including warnings and other messages. Disable this option for large load testing scenarios. When you copy a script to a scenario, logging is automatically disabled. We can specify which additional information should be added to the extended log using the Extended log options.

27.How do you debug a LoadRunner script?
VuGen contains two options to help debug Vuser scripts-the Run Step by Step command and breakpoints. The Debug settings in the Options dialog box allow us to determine the extent of the trace to be performed during scenario execution. The debug information is written to the Output window. We can manually set the message class within your script using the lr_set_debug_message function. This is useful if we want to receive debug information about a small section of the script only.

28.What is LR-function.
It is a general function which is accessed by all types of users.
this is also called LR function because all general functions start with lr.

29.How do you write user defined functions in LR? Give me few functions you wrote in your previous project?
 Before we create the User Defined functions we need to create the external
library (DLL) with the function. We add this library to VuGen bin directory. Once the library is added then we assign user defined function as a parameter. The function should have the following format: __declspec (dllexport) char* <function name>(char*, char*)Examples of user defined functions are as follows:GetVersion, GetCurrentTime, GetPltform are some of the user defined functions used in my earlier project.

30.What are the changes you can make in run-time settings?
 The Run Time Settings that we make are: a) Pacing - It has iteration count. b) Log - Under this we have Disable Logging Standard Log and c) Extended Think Time - In think time we have two options like Ignore think time and Replay think time. d) General - Under general tab we can set the vusers as process or as multithreading and whether each step as a transaction.

31.Where do you set Iteration for Vuser testing?
We set Iterations in the Run Time Settings of the VuGen. The navigation for this is Run time settings, Pacing tab, set number of iterations.

32.How do you perform functional testing under load?
 Functionality under load can be tested by running several Vusers concurrently. By increasing the amount of Vusers, we can determine how much load the server can sustain.

33.What is Ramp up? How do you set this?
This option is used to gradually increase the amount of Vusers/load on the server. An initial value is set and a value to wait between intervals can be
specified. To set Ramp Up, go to ‘Scenario Scheduling Options’

34.What is the advantage of running the Vuser as thread?
VuGen provides the facility to use multithreading. This enables more Vusers to be run per
generator. If the Vuser is run as a process, the same driver program is loaded into memory for each Vuser, thus taking up a large amount of memory. This limits the number of Vusers that can be run on a single
generator. If the Vuser is run as a thread, only one instance of the driver program is loaded into memory for the given number of
Vusers (say 100). Each thread shares the memory of the parent driver program, thus enabling more Vusers to be run per generator.

35.If you want to stop the execution of your script on error, how do you do that?
The lr_abort function aborts the execution of a Vuser script. It instructs the Vuser to stop executing the Actions section, execute the vuser_end section and end the execution. This function is useful when you need to manually abort a script execution as a result of a specific error condition. When you end a script using this function, the Vuser is assigned the status "Stopped". For this to take effect, we have to first uncheck the “Continue on error” option in Run-Time Settings.

36.What is the relation between Response Time and Throughput?

The Throughput graph shows the amount of data in bytes that the Vusers received from the server in a second. When we compare this with the transaction response time, we will notice that as throughput decreased, the response time also decreased. Similarly, the peak throughput and highest response time would occur approximately at the same time.

37.Explain the Configuration of your systems?

The configuration of our systems refers to that of the client machines on which we run the Vusers. The configuration of any client machine includes its hardware settings, memory, operating system, software applications, development tools, etc. This system component configuration should match with the overall system configuration that would include the network infrastructure, the web server, the database server, and any other components that go with this larger system so as to achieve the load testing objectives.

38.How do you identify the performance bottlenecks?

Performance Bottlenecks can be detected by using monitors. These monitors might be application server monitors, web server monitors, database server monitors and 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.

39.If web server, database and Network are all fine where could be the problem?

The problem could be in the system itself or in the application server or in the code written for the application.

40.How did you find web server related issues?

Using Web resource monitors we can find the performance of web servers. Using these monitors we can analyze throughput on the web server, number of hits per second that
occurred during scenario, the number of http responses per second, the number of downloaded pages per second.

41.How did you find database related issues?

By running “Database” monitor and help of “Data Resource Graph” we can find database related issues. E.g. You can specify the resource you want to measure on before running the controller and than you can see database related issues

42.What is the difference between Overlay graph and Correlate graph?

Overlay Graph: It overlay the content of two graphs that shares a common x-axis. Left Y-axis on the merged graph show’s the current graph’s value & Right Y-axis show the value of Y-axis of the graph that was merged. Correlate Graph: Plot the Y-axis of two graphs against each other. The active graph’s Y-axis becomes X-axis of merged graph. Y-axis of the graph that was merged becomes merged graph’s Y-axis.

43.How did you plan the Load? What are the Criteria?

Load test is planned to decide the number of users, what kind of machines we are going to use and from where they are run. It is based on 2 important documents, Task Distribution Diagram and Transaction profile. Task Distribution Diagram gives us the information on number of users for a particular transaction and the time of the load. The peak usage and off-usage are decided from this Diagram. Transaction profile gives us the information about the transactions name and their priority levels with regard to the scenario we are deciding.

44.What does vuser_init action contain?

Vuser_init action contains procedures to login to a server.

45.What does vuser_end action contain?

Vuser_end section contains log off procedures.

46.What is think time? How do you change the threshold?

Think time is the time that a real user waits between actions. Example: When a user receives data from a server, the user may wait several seconds to review the data before responding. This delay is known as thethink time. Changing the Threshold: Threshold level is the level below which the recorded think time will be ignored. The default value is five (5) seconds. We can change the think time threshold in the Recording options of the Vugen.

47.What is the difference between standard log and extended log?

The standard log sends a subset of functions and messages sent during script execution to a log. The subset depends on the Vuser type Extended log sends a detailed script execution messages to the output log. This is mainly used during debugging when we want information about: Parameter substitution. Data returned by the server. Advanced trace.
What is .lrs.
Load runner save the information in a scenario files.
 Explain the following functions: - lr_debug_message
The lr_debug_message function sends a debug message to the output log when the specified message class is set. lr_output_message - The lr_output_message function sends notifications to the Controller Output window and the Vuser log file. lr_error_message - The lr_error_message function sends an error message to the LoadRunner Output window. lrd_stmt - The lrd_stmt function associates a character string (usually a SQL statement) with a cursor. This function sets a SQL statement to be processed. lrd_fetch - The lrd_fetch function fetches the next row from the result set.

48.Throughput

If the throughput scales upward as time progresses and the number of Vusers increase, this indicates that the bandwidth is sufficient. If the graph were to remain relatively flat as the number of Vusers increased, it would
be reasonable to conclude that the bandwidth is constraining the volume of
data delivered.

49.Types of Goals in Goal-Oriented Scenario

Load Runner provides you with five different types of goals in a goal oriented scenario: - The number of concurrent Vusers
- The number of hits per second
- The number of transactions per second
- The number of pages per minute
- The transaction response time that you want your scenario

50.Analysis Scenario (Bottlenecks):

In Running Vuser graph correlated with the response time graph you can see that as the number of Vusers increases, the average response time of the check itinerary transaction very gradually increases. In other words, the average response time steadily increases as the load
increases. At 56 Vusers, there is a sudden, sharp increase in the average response
time. We say that the test broke the server. That is the mean time before failure (MTBF). The response time clearly began to degrade when there were more than 56 Vusers running simultaneously.

51.Where do you set automatic correlation options?
Automatic correlation from web point of view, can be set in recording options and correlation tab. Here we can enable correlation for the entire script and choose either issue online messages or offline actions, where we can define rules for that correlation.  Automatic correlation for database, can be done using show output window and scan for correlation and picking the correlate query tab and choose which query value we want to correlate. If we know the specific value to be correlated, we just do create correlation for the value and specify how the value to be created.

52.Can we use Load Runner for testing desktop applications or non web based applications and how do we use it.?
Yes we can use LoadRunner for the desktop application.
When you start load runner VU generator , it asks you to select the type of protocol to use. There you have plenty of options from E-business application( web based) to client/server applications.

53.What is load runner Agent.
Load Runner Agent is the mediator between Load Runner Controller and the Host.
Agent process is a interface between load generators and the controllers it carries the requests and Reponses (of establish connection, and the amt of load)between the  load runner  and controller.

54.What protocols does LoadRunner support?
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 Components: For COM/DCOM, Corba-Java, and Rmi -Java protocols.
- E-business: For FTP, LDAP, Palm, Web (HTTP/HTML), Web Services, and the dual Web/Winsocket protocols.
- Enterprise Java Beans: For EJB Testing and Rmi-Java protocols.
- ERP/CRM: For Baan, Oracle NCA, Peoplesoft-Tuxedo, Peoplesoft 8, SAPGUI, SAP-Web, and Siebel (Siebel-DB2CLI, Siebel-MSSQL, Siebel-Web, and Siebel-Oracle) protocols.
- Legacy: For Terminal Emulation (RTE).
- Mailing Services: Internet Messaging (IMAP), MS Exchange (MAPI), POP3, and SMTP.
- Middleware: Jacada and Tuxedo (6, 7) protocols.
- Streaming: For MediaPlayer and RealPlayer protocols.
- Wireless: For i-Mode, VoiceXML, and WAP protocols.

55.What are the 5 icons appear in the buttom of the controller windows.
1-host windows(list of machine).
2-script windows(list of all the vuser script)
3-rendezvous windows.
4-transaction windows(display all the transaction) .
5-output window( display error and notification message).

56.What is Elasped Time in Load Runner?
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........
In the "Scenario Status" in the Run tab view, elapsed
time is calculated from the time the scenario is started. This means that the time is
measured from the time you click on "Start Scenario" or "Initialize/Run Vuser".
However, in the "Vuser" window, elapsed time is calculated from the time the Vuser
enters the 'running' state.

57.Which version of Load Runner supports .NET applications? Can we do performance testing of .NET applications using Load Runner 5.0?
Loadrunner 8.0 supports .NET based applications.

58.What do you mean by Remote Command Launcher(RCL).
Remote Command Launcher is used to Start the application from the Host. Host is a Computer or Machine.

59.According to Market analysis 70% of performance problem lies with what?
Performance problem are based on server capacity, database problems, deployment problems etc...
Depend on the Testing what you are performing ?
IN Performance Testing :
The breakdown of responses from server to client more than the expected message quote .
IN Load Testing/Stress Testing:
The outof Memory Problems
Object Locks at code level
Tables lock at database level
Compatability of the Production version with the auxiliary systems
and etc.

60.What is the system requirement for 10,000 Vusers running concurrently?
The capability of the system to handle 10,000 vusers can depend upon the Memory footprints of the VUSER. For example the Web http/html protocol can take less resources compared to a Oracle-NCA Vuser or a winsock Vuser. so determine the Memory footprint and then you can go about the testing for 10,000 vusers.
Also the transactions can be run as threads or processess>>Believe me this makes a lot of difference.

61.How can we add user defined functions in load runner?
Create external library(.DLL) with function. Add this to VuGen Bin Directory. after adding assing user define function as parameter.
Syntax _declspec(dllexport)char*<function name>(char*,Char*)

62.What is injector in load runner?
Injector is nothing but load generator in LR. when you want to run a script for multiple Vusers then you have to a create a scenario for those scripts or script with multiple users. There you have to specifiy  the load generator i.e., it is local host or remote host. it means that from which system you have to ramp up the Vusers to run the script. for this you have to add the load generators by giving their IP addresses and before for this you have to install load generators on those machines which are to be used as injectors.

63.What is MS-windows.
Microsoft's operating system software 'Windows'.
It is different from WinRunner which is Mercury testing tool for GUI.

64.What is GUI vuser and on which platform it will run.
GUI Vusers actually perform the actions using the client.this means that fewer GUI vusers can be run per workstation than the other types of vusers due to the overload of the client, and is infact limited to one GUI v user per workstation.GUI Vusers are not so much to generate load on a system but to test end -to end performance associated with various business processes.

65.Which protocol has to be selected for record/playback Oracle 9i application?
Seeing your application is running on which protocol, any of these protocols can be set because all are supportive for Load Runner

ODBC
Sybase lib
Oracle lib
People soft
Sap
Baan
Siebel
RTE
FT
SMTP
POP
HTTP
RMI
CORBA
COM/DCOM
JDBC
Windows sockets

66.How you set maximum number of vuser that a host can run.
Initially run the application with one user. Save the results.
now increase the load to 5,15,50,100,500,1000 slowly.
During the process, you will find the system will break down for a particular number of virtual users. From there start decreasing the load and u will find the bottle neck for the application so that u can call for the quality meeting.

67.What is Host.
Host is the System, Generally known as Controller to execute the Vuser Script. Eighther it can be Local host or Remote Host.

68.What is transaction .
A transaction represents end-user business processes that you are interested in measuring.

69.How many users can I emulate with Load-Runner on a PC?
That also depends on the licence of the loadrunner software.There are different licence management available.For a normal loadrunner license we can generate upto 250 users...thats the maximum limi. but depends on what kind of licence u have..

70.What are the only means of measuring performance?
Transactions are the only means of measuring performance.

71.What is the load runner end transaction and its syntax.
It will end the transaction. Syntax. Lr-end-transaction("transaction name", LR-AUTO).

72.What is parameterigation
Parameterization is passing the set of data to an application. we have to parameterize the fields when we want to run the script with multiple users. for example if you scripted the navigations like entering the data of your data of birth, your place of birth etc. then suppose if u want to run the script one again (if the data is unique) or when you want to run the script with multiple users in controller. You have to parameterize those fileds for safe run.

73.During run time where the hosts saves the files.
In temporally in the local drive of each host.

74.What do you mean by path.
Use win runner configuration file that is in a specific location on the network.

75.How many types of vuser are available .
DB Virtual Users
SAP Virtual users
WEB
GUI
RTE(Remote Terminal Emulators)

76.What is filtering and sorting.
We can filter the information display only those items that meet the selected criteria(filter box) .exam you can filter vuser only those who are in ready state. Sorting - we can sort all the vuser in the vuser list. In order to their vuser ID(1,2,3,4,5,6,7,8,9).

77.How you edit the script .
While editing the script we have to inserting the transaction point and rendezvous point.

78.How you develop the database vuser script .
DB Vuser performs operations against a database server.
Recording a DB V user is as simple as perfoming a business process while having launched the LR Vugen.
This creates a script which is used by LR to perform the recorded business process.
once recorded , a script is then parameterised.This process involves replacing hard coded data values in the script with parameters which refers to tables external to the script.
Values can then be placed in these tables allowing Vusers to perform a single business process , but with different data each time.

79.What is stand-alone mode.
Running the script without using controller.
How you enhance the basic script .
The important steps needs to carried to enhance a basic script
1. Parameterization( Providing the user inputs to the application)
2. Correlation(handling dynamic server responses)
3. Transaction names( to get the response time)
4. Think time( to simulate the real time user wait time)
5. Text check( validating the server response pages for the request).

80.What is vuser-end section.
Record a log off in to the server (vuser stoped).

82.What is running virtual user graph.
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.

83.What are the Monitors in LoadRunner?
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.

84.Where is Load testing usually done?
The Load testing is carried in the controlled environment based on the requirement specs from the client the Load Test Plan followed with the scenarios are created & executed to match the requirements. To speak more precisely the Load testing Episode is carried once the Performance exercise is done, finding the System bottlenecks & Tuning and Fixed.

85.What is script list.
It contain all the vuser script that vuser can run.

86.What is run-time-setting?
Run time setting means specifying the way the vuser script runs.
Load Runner run time settings let you emulate different kinds of real time activity andd behavior. For Example you could emulate a user who responds immidiately to output from the server or user who stops and tinks before doing any transaction. you can configure how many Vuser should repeat a set of action and how often.