Estimate Time Need to Reassign Maps | Teradata Vantage - About Estimating the Time Needed to Reassign Maps - Advanced SQL Engine - Teradata Database

To see an estimate of the time needed for planned map reassignments, you can use any of the following methods:

• Add the table to DBC.ReconfigRedistOrderTbl and run the Reconfig estimator.
• Experiment with INSERT-SELECT or ALTER TABLE on sample data.
• Use DBQL step logging to log CPU and I/O for each step. Scale up the numbers to arrive at an estimate.