CPU Limits at Multiple Levels - comment by carrie

Sanjeev,
 
To answer your most recent question: 
 
The calculation of the relative weight of either a resource partition or an allocation group has nothing to do with where a CPU limit is set.  The CPU limit percent does not participate in the calculation of relative weight.    Up until the defined CPU limit is reached, relative weight will determine priority and frequency of access to CPU for an allocation group.
 
 For the earlier question:
 
In order for an allocation group weight to chnage automatically (day vs. night for example), the administrator must have defined a different priority scheme for each of two operating environments.   
 
This is done in Viewpoint Workload Designer.  The screen where relative weights are defined is specific to a single planned environment (operating enviroment).  If there are multiple planned environments established, then weights need to be specified for all allocation groups within each planned enviroinment. When the planned environment changes, a new priority setup is then in effect.  
 
When a planned environment changes, Viewpoint sends the new settings to the PDE layer in the Teradata Database which controls priority scheduler, making the change in weights happen without any intervention from the DBA.
 
Thanks, -Carrie