The task of creating a .st file to add extents offline is the same as that for adding extents online. However, to validate a .st file offline, you use the PROSTRCT ADD VALIDATE utility.

The command to validate a .st file offline is:
prostrct add db-name .st-file –validate

Assume that the sports database is offline. Also assume that you have a .st file, sports_add.st, that adds two fixed extents and a variable extent to the sports database.

To validate sports_add.st offline, enter:
prostrct add sports sports_add.st –validate