User-defined collections that return a variant number of columns (such as select * from ...) will only retrieve the columns that existed during its creation. Any additional columns will be ignored.
Using an alter to add a new column to a table used in the UDC is ignored and is not included in the output of a "select *" query.
Create a new User Defined Collection (UDC) that includes the new column.
This is a known issue for the Oracle cartridge logged as ODB-4417 and is included in the cartridge release notes.