How STOSPACE ensures availability of objects it STOSPACE requires

For each object, the amount of allocated space is determined from an appropriate VSAM catalog. Hence the table spaces and indexes do not need to be available to Db2 when STOSPACE is running; only the Db2 catalog and appropriate VSAM catalogs are required. However, to gain access to the VSAM catalog, the utility must have available to it the database definition (DBD) for the objects that are involved. This access requires that the appropriate database, table spaces, and index spaces not be in the stopped state.