title: Not able to connect django1.11 with oracle11g
body: <p>I am not able to migrate project in linux. Dependecy:cx-Oracle==7.2.0
  Django==1.11,oracle11g and python3.I am trying to connect with a server database.</p>
  
  <p>I removed a line <code>self.cursor.numbersAsStrings = True</code> from <strong>/work/sunlife_env/lib/python3.6/site-packages/django/db/backends/oracle/base.py</strong> to resolve this error:</p>
  
  <blockquote>
    <p>AttributeError: 'cx_Oracle.Cursor' object has no attribute 'numbersAsStrings'</p>
  </blockquote>
  
  <p>BUT now, after python manage.py migrate, I am getting the following error.</p>
  
  <pre><code>Operations to perform:
    Apply all migrations: admin, auth, contenttypes, sessions
  Running migrations:
    Applying contenttypes.0001_initial...Traceback (most recent call last):
    File "manage.py", line 22, in &lt;module&gt;
      execute_from_command_line(sys.argv)
    File "/home/arima/work/sunlife_env/lib/python3.6/site-packages/django/core/management/__init__.py", line 363, in execute_from_command_line
      utility.execute()
    File "/home/arima/work/sunlife_env/lib/python3.6/site-packages/django/core/management/__init__.py", line 355, in execute
      self.fetch_command(subcommand).run_from_argv(self.argv)
    File "/home/arima/work/sunlife_env/lib/python3.6/site-packages/django/core/management/base.py", line 283, in run_from_argv
      self.execute(*args, **cmd_options)
    File "/home/arima/work/sunlife_env/lib/python3.6/site-packages/django/core/management/base.py", line 330, in execute
      output = self.handle(*args, **options)
    File "/home/arima/work/sunlife_env/lib/python3.6/site-packages/django/core/management/commands/migrate.py", line 204, in handle
      fake_initial=fake_initial,
    File "/home/arima/work/sunlife_env/lib/python3.6/site-packages/django/db/migrations/executor.py", line 115, in migrate
      state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)
    File "/home/arima/work/sunlife_env/lib/python3.6/site-packages/django/db/migrations/executor.py", line 145, in _migrate_all_forwards
      state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
    File "/home/arima/work/sunlife_env/lib/python3.6/site-packages/django/db/migrations/executor.py", line 250, in apply_migration
      self.recorder.record_applied(migration.app_label, migration.name)
    File "/home/arima/work/sunlife_env/lib/python3.6/site-packages/django/db/migrations/recorder.py", line 73, in record_applied
      self.migration_qs.create(app=app, name=name)
    File "/home/arima/work/sunlife_env/lib/python3.6/site-packages/django/db/models/query.py", line 393, in create
      obj.save(force_insert=True, using=self.db)
    File "/home/arima/work/sunlife_env/lib/python3.6/site-packages/django/db/models/base.py", line 806, in save
      force_update=force_update, update_fields=update_fields)
    File "/home/arima/work/sunlife_env/lib/python3.6/site-packages/django/db/models/base.py", line 836, in save_base
      updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
    File "/home/arima/work/sunlife_env/lib/python3.6/site-packages/django/db/models/base.py", line 922, in _save_table
      result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)
    File "/home/arima/work/sunlife_env/lib/python3.6/site-packages/django/db/models/base.py", line 961, in _do_insert
      using=using, raw=raw)
    File "/home/arima/work/sunlife_env/lib/python3.6/site-packages/django/db/models/manager.py", line 85, in manager_method
      return getattr(self.get_queryset(), name)(*args, **kwargs)
    File "/home/arima/work/sunlife_env/lib/python3.6/site-packages/django/db/models/query.py", line 1060, in _insert
      return query.get_compiler(using=using).execute_sql(return_id)
    File "/home/arima/work/sunlife_env/lib/python3.6/site-packages/django/db/models/sql/compiler.py", line 1106, in execute_sql
      return self.connection.ops.fetch_returned_insert_id(cursor)
    File "/home/arima/work/sunlife_env/lib/python3.6/site-packages/django/db/backends/oracle/operations.py", line 245, in fetch_returned_insert_id
      return int(cursor._insert_id_var.getvalue())
  TypeError: int() argument must be a string, a bytes-like object or a number, not 'list'
  </code></pre>
  
  <p>I need help to connect my db to django project.</p>