In generic terms, Resource monitoring is a term used to describe the observation of a property or asset over time. Typically, these observations are numerical facts or data, also known as statistical data. Most often within the performance testing space a resource can be, but is not limited to, a physical system or a process executing on a system. Resource monitoring is crucial when trying to determine the problem with an application that is failing to perform at reasonable levels, because this type of monitoring allows a performance tester to determine whether there is a lack of system-level resources or an issue with the application itself.
The resource monitoring feature in IBM Rational Performance Tester (RPT) allows real-time monitoring of systems and system processes. However in most cases it so happens that the credentials of the remote machine are forced to be reset / changed periodically, post which you specify these new changed credentials during the course of configuring the remote machine details under the "Resource Monitoring" section in RPT.
In some cases, say you might have changed the password of the remote machine and these changed credentials are specified in RPT's Resource Monitoring section. However you notice that the "Finish" button still shows greyed out or rather disabled. If you try to look at the resources that are to be monitored, it tells that cannot be connected and results in following error.
Error: IWAY0275E Unable to connect to the resource monitoring host (PDH_ACCESS_DENIED)
Sometimes the host-name is required (For Example: Username has to be HOSTNAME\Administrator) and then make sure correct password is entered).
In more generic terms the PDH_ACCESS_DENIED error indicates that you have to check the permissions and authentication of the log service or the interactive user session against those on the computer or service being monitored.
However if you would like to isolate this behavior from RPT perspective, then, try using the windows Perfmon client to access the remote computers rather than RPT. This will tell you whether the issue is with RPT or the users network. You may also try specifying the Administrator credentials of the remote machine under the Resource Monitoring section in RPT and see if that works.
In addition to these you may add your user account to these groups on the remote computer that you want to access, follow these steps:
- Log on to the remote computer as an administrator.
- Click Start, click Run, type compmgmt.msc, and then press ENTER.
- In the Computer Management window, expand System Tools, expand Local Users and Groups, and then click Groups.
- Double-click Performance Log Users, and then click Add.
- In the Enter the object names to select box, type the name of the user account or group account that you want to add, and then click OK.
Repeat these steps to add your account to the Performance Monitor Users group