You can manage data collected for reports by configuring jobs to not collect detail data for reports. Not all reports use detail data and collecting this information increases the size of the QDB.
At this time, configure the QDB to collect detail data for reports. If you configure the repository preference to not collect detail data reports, you cannot override this preference in the properties of a running job. Instead, configure the Advanced tab job properties for the jobs that you do not want to collect detail data for reports.