DB2 migration issue from AIX to Linux

I am trying to migrate database from AIX box to Linux box using the
db2move and db2look command. Everything worked fine for the tables with
user defined schema. But I am facing problem with four tables under the
schema SYSTOOLS. So I tried db2look for these four tables..what happens
is it is connecting to the database, but not extracting the DDL for
these tables, I tried for single table and all tables at once, but no
use. Without generating the DDL it's simply terminating from the
database. So is it possible to extract DDL for objects in schema
SYSTOOLS, if yes how should I further proceed.

Thanks in advance,
Kamal.