LOADRUNNER CORRELATION TUTORIAL PDF

Detect and correlate dynamic data for application servers supported by HP LoadRunner Rule-Based Used when working with a non-supported application server for which the context is known. Correlate All Helps correlate all dynamic data in blind fashion. It is always advisable to use manual correlation. To configure automatic correlation at the time of recording, perform below configuration in Record Time Setting after a script has been recorded. On the right-hand side, you can see the rules which will detect possible candidates for correlation e. You can also add more applications or custom rules by clicking on New Rule button.

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Detect and correlate dynamic data for application servers supported by HP LoadRunner Rule-Based Used when working with a non-supported application server for which the context is known.

Correlate All Helps correlate all dynamic data in blind fashion. It is always advisable to use manual correlation. To configure automatic correlation at the time of recording, perform below configuration in Record Time Setting after a script has been recorded. On the right-hand side, you can see the rules which will detect possible candidates for correlation e. You can also add more applications or custom rules by clicking on New Rule button.

If you click on automatically correlate values found, VUGen will not prompt you with the choice once a correlation candidate is found, instead, it will just correlate them. We will understand API used for correlation later. However, it is advisable to use HTML comparison instead of text comparison.

Click on from menu and VUGen will regenerate script without having to record with new configurations. VUGen will automatically add a required piece of code to handle correlation. We will look at the sample in more detail in Manual Correlation.

Please note, if you perform correlation manually or use automatic correlation, the piece of code will contain exactly same syntax and function. Steps to auto-correlate a script: Record a script Identify the values to be correlated Select the values and click the auto-correlate button Verify the script by running again. A successful run means successful correlation. Tip: Correlation helps run your script with different values Correlation also reduces the size of your script Manual Correlation Manual correlation is about writing code directly into your script to cater for ever-changing values.

You will have to deal with it a lot when working in the industry. Instead, after receiving a redirection response, the GET request is sent to the redirected location, and the search is performed on the response from that location. This attribute is optional. LB: The left boundary of the parameter or the dynamic data. If you do not specify an LB value, it uses all of the characters from the beginning of the data as a boundary. Boundary parameters are case-sensitive.

To further customize the search text, use one or more text flags. This attribute is required. See the Boundary Arguments section. If the boundary is not found, it sets the parameter count to 0 and continues executing the script. The "warning" option is ideal if you want to see if the string was found, but you do not want the script to fail. Note: If Continue on Error is enabled for the script, then even when NOTFOUND is set to "error", the script continues when the boundary is not found, but an error message is written to the extended log file.

This attribute is optional as well. ORD: Indicates the ordinal position or instance of the match. The default instance is 1. If you specify "All," it saves the parameter values in an array.

RB: The right boundary of the parameter or the dynamic data. If you do not specify an RB value, it uses all of the characters until the end of the data as a boundary.

The possible values are ALL or a number. SaveLen: The length of a sub-string of the found value, from the specified offset, to save to the parameter. The default is -1, indicating to save to the end of the string. SaveOffset: The offset of a sub-string of the found value, to save to the parameter.

The offset value must be non-negative. The default is 0. Search: The scope of the search-where to search for the delimited data. The possible values are Headers Search only the headers , Body search only body data, not headers , No resource search only the HTML body, excluding all headers and resources , or ALL search body, headers, and resources. The default value is ALL.

This attribute is optional but generally preferred.

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