Hi Sagy,
Have you installed this system using deferred table creation?
Please refer to "Note 1151343 - DB6: Using "Deferred Table Creation"".
According to note 1224865 DB6: Materialization of virtual tables:
use the command
db2 " select viewname from syscat.views where TEXT like '% DDL_TABLE%'
to find all virtual tables that may exist in the system.
Regards,
Aidan