Specify this option to modify the free space percentage for a table.
Instead, submit an ALTER TABLE request to change the free space percent value for the table and then immediately afterward submit a PACKDISK command that specifies the same free space percent value you set with that ALTER TABLE request (see the documentation for the Ferret utility in Teradata Vantage™ - Database Utilities, B035-1102 for more information and instructions for running PACKDISK).
The reason for this is as follows: if you manually submit a PACKDISK command and specify a free space percentage on the command line, PACKDISK packs or unpacks the cylinders for the table to match the specified free space percentage. However, if the free space percentage you specify differs from the value specified for the table when it was created or most recently altered, the database starts a new AutoCylPack task immediately after PACKDISK completes, and this AutoCylPack operation nullifies the free space percentage you had just specified with PACKDISK to realign it with the free space percentage specified when you created or last altered the table.