Resource limits, available for Teradata Database 15.10 and later, restrict utility jobs based on the availability of AMP worker task (AWT) resources. Teradata System imposes system default AWT resource limits (viewable on the Resource Limits by State tab), but you can restrict resource usage further by designating limits for the utility types and by the request source or query band you designate.
AWT resource limits are applied to new utility jobs. If a limit is exceeded, any new jobs are delayed or rejected, depending on the option you set.