Test suite fails to run under Oracle

[Aymeric Augustin]

For some reason I don't quite understand, starting with r17635, the test suite fails to run under Oracle:

Creating test database for alias 'default'...
Traceback (most recent call last):
  File "runtests.py", line 323, in <module>
    options.failfast, args)
  File "runtests.py", line 166, in django_tests
    failures = test_runner.run_tests(test_labels, extra_tests=extra_tests)
  File "/var/lib/jenkins/jobs/Django + Oracle/workspace/django/test/simple.py", line 381, in run_tests
    old_config = self.setup_databases()
  File "/var/lib/jenkins/jobs/Django + Oracle/workspace/django/test/simple.py", line 317, in setup_databases
    self.verbosity, autoclobber=not self.interactive)
  File "/var/lib/jenkins/jobs/Django + Oracle/workspace/django/db/backends/creation.py", line 271, in create_test_db
    load_initial_data=False)
  File "/var/lib/jenkins/jobs/Django + Oracle/workspace/django/core/management/__init__.py", line 150, in call_command
    return klass.execute(*args, **defaults)
  File "/var/lib/jenkins/jobs/Django + Oracle/workspace/django/core/management/base.py", line 232, in execute
    output = self.handle(*args, **options)
  File "/var/lib/jenkins/jobs/Django + Oracle/workspace/django/core/management/base.py", line 371, in handle
    return self.handle_noargs(**options)
  File "/var/lib/jenkins/jobs/Django + Oracle/workspace/django/core/management/commands/syncdb.py", line 102, in handle_noargs
    cursor.execute(statement)
  File "/var/lib/jenkins/jobs/Django + Oracle/workspace/django/db/backends/oracle/base.py", line 674, in execute
    return self.cursor.execute(query, self._param_generator(params))
django.db.utils.DatabaseError: ORA-06552: PL/SQL: Compilation unit analysis terminated
ORA-06553: PLS-320: the declaration of the type of this expression is incomplete or malformed

The problem is reproducible by running the admin_changelist tests in isolation.

Setting component to "admin" because the bug appears in the "admin" tests, but that may be totally wrong.