Empty LOBs can be put in the database by passing them to insert-records or update-records. However, the preferred approach is to use the Oracle SQL function EMPTY_BLOB as described in the section Inserting empty LOBs.
The default value of db is the value of *default-database*.
is available only when the "oracle" module is loaded. See the section Oracle LOB interface for more information.
LispWorks User Guide and Reference Manual - 21 Dec 2011