Collect data by changing the WAS configuration file
When the Java process for hosting WAS is initialized, it gets its command line options from the server configuration file. This file exists for every WAS node and every WAS server. The location and name of this file is defined as follows:
<WAS root>\profiles\<your active profile>\config\cells\< cell id>\nodes\<node id>\servers\<server name>\server.xml

For example, if WAS is installed in C:\WAS, the profile name is ‘MyProfile’, the cell id is ‘MyCellId’, the node id is ‘MyNodeId’, and the server name is ‘MyServer’. The configuration file path will be defined like this:

C:\WAS\profiles\MyProfile\config\cells\MyCellId\nodes\MyNodeId\servers\MyServer\server.xml

Ex :
The best way to change the profile is to use the WAS administrative console. However, if you do not have access to the console or do not have sufficient rights to edit the server configuration, you may edit the XML file directly. You should locate the jvmEntries element in this file and change the appropriate VM options by adding the JVMPI loading option: -XrunPureJVMPI:. 

After saving the file or applying these changes from the administrative console you should restart the server process. After the new instance of WAS starts, it will run with the appropriate profiler attached.

Start > Run > services.msc > Locate your service ex  : 

IBM WebSphere Application Server V6.1 - CDSServer

> Right click on it > Properties > go to Log on Tab > Select This Account > Provide the user and passwords which is same as the user which is running Purify coverage. > Apply > Ok. 

• Now launch the Purify coverage once. 
• Empty coverage window opens up ... 
• Then now re-strat the Websphere service. 

Most of the RFT (Rational Functional Tester) users in the initial stages will get question in mind when they see the auto-generated log after executing their Functional script ... i.e
How to add more information/messages to log ? How to change logs ?
Its so simple. RFT provides the following functions to customize your final log file after executing the functional script.
We know that the logs can maintained in different ways in RFT say TestManager Log, HTML Log, or Text Log etc. What eve the kinda log we are using we can add our general messages or test status results say PASS / FAIL to the log file.
RFT provides the following functions to add more messages
Function name - Usage Example
logInfo - logInfo("Login button is clicked. - PASS");
logTestResult - Ex : 1
logTestResult("Text buffer comparison",TextField_text.equals(urloginName));
Ex : 2
if(getText_login.equals(UrloginName))
{
logTestResult("Text buffer comparison", true);
}

logError - logError("Exception e = "+e.toString());
logWarning - logWarning("Your warning message goes here.");

This post is basically to help the software testers who are interested to start using the RFT-Rational functional tester as the automation tool for their needs to automate their test efforts.
So basically the first and foremost thing to start with is,
where can I get the RFT latest installer to download ?
It is Free for IBMers to use for their work purpose. Read the full rules and regulations to use.
You go to Xtreme leverege site and start downloading the installers mentioned below.
https://www14.software.ibm.com/webapp/dswdown/dswdown.wss/web/resultsActionDesc#anchor
It is only for IBMers to download. Need their intranet credentials to download.
The following are the required packages for installation along with their part numbers.
IBM Rational Functional Tester V8.1Multiplatform Multilingual eAssembly (Core) (CR93MML)
IBM Rational Functional Tester V8.1 Multilingual Multiplatform Part 1 (CZ3KXML)
IBM Rational Functional Tester V8.1 Multilingual Multiplatform Part 2 (CZ3KYML)
IBM Rational Functional Tester V8.1 Setup Multilingual Multiplatform Part (CZ3KWML)
IBM Rational Functional Tester V8.1 Multiplatform Multilingual Activation Kit (CZ3KVML)
Quick Start Guide for IBM Rational Functional Tester V8.1 Multilingual Multiplatform - READ ME FIRST (CZ3KUML)
The important Reading material to install and use the RFT is well explained in the following link.
It contains Installtion steps,Testing,Using,tours,Tutorials, Samples and trouble shooting as well here.
Information center for the RFT:
http://publib.boulder.ibm.com/infocenter/rfthelp/v8r1/index.jsp
Product Information:
http://www-01.ibm.com/software/awdtools/tester/functional/index.html