If you suppress automatic statistics collection by specifying SET UPDATE STATISTICS OFF in the (input) control file before issuing the DATALOAD command, you must issue an UPDATE STATISTICS statement to collect statistics. The UPDATE STATISTICS statement performs a dbspace scan, so it can be time-consuming if the number of active data pages in that dbspace is large. Consider suppressing statistics collection only if you know the statistics are not going to change significantly (for example, a small amount of data is being added to a large table). In this situation, you can postpone updating the statistics until more substantial changes have occurred.