Syncdb Error With Oracle Database - IntegrityError Exception

Just discovered Django and trying out the Django 1.4 tutorial with an Oracle backend database. In my database, I have created user django with privs create session, create table, create sequence, create trigger. The DATABASES dictionary in settings has been edited to set the default settings to the Oracle engine, and the database name, user and password specified.

When I run:

$ python manage.py syncdb

I see tables are created, but I also get a traceback ending with:

File "/usr/lib/python2.7/site-packages/django/db/backends/oracle/base.py", line 675, in execute
    return self.cursor.execute(query, self._param_generator(params))
django.db.utils.IntegrityError: ORA-01400: cannot insert NULL into ("DJANGO"."AUTH_PERMISSION"."ID")

I did not see a prompt to create a superuser account.

Oracle SQL*Developer shows that schema django contains 9 tables (including auth_permission), 16 indexes, 7 triggers and 8 sequences. Table django_content_type contains three rows, and the others are empty.

Can anyone advise on how to resolve the ORA-01400 error?

Run-time environment:
  O/S: Fedora 14
  Django: 1.4.1
  Python: 2.7
  DB: Oracle Database 11.1.0.6.0
  cx_Oracle client: 11.1.0.6.0

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