New opportunities for statistics collection in Teradata 14.0 - comment by carrie

Sudhakar,
 
Different statistics collections on different tables will behave differently when you move to either 14.0 or 14.10 from an earlier release.    I am glad to hear that you are seeing resource savings in some areas.  Under varying circumstances it is possible to experience greater resource requirements for certain stats collections on the newer releases, but I would expect this to be counterbalanced by savings elsewhere, with other stats.
 
It is advisable to recollect at the table level so the optimizer can attempt to bundle the stats collections for the entire table.
 
If you detect any resource usage increase with stats collections that is greater than 10%, I'd suggest you open an incident with the support center.
 
Thanks, -Carrie