TDV caches SAP BEx metadata to improve query performance. These caches are automatically cleared after every TDV restart, but you might want to do this at other times.

For example, your SAP BEx data source might become out of sync with the SAP BEx database, even after reintrospecting the data. If the metadata is still out of sync after reintrospection, you can restart the TDV instance, or you can clear the metadata cache as described in this section.