In reply to MasterG.

Yes, I think that's right. The DBDSOPTS= option is specific to PROC IMPORT and the EXCEL/PCFILES engines, which passes through these options to the subsystems that process Excel and MS Access files. Also, DBTYPE= usually means "take this SAS value and write it to the database as this type" whereas DBSASTYPE= means "take this database value and read it into SAS as this type".