title: Django inspectdb issue using Oracle database
body: <p>Installed cx_oracle and ran inspectdb. Don't seem to get any output? Can somebody help? Is there a known issue using inspectdb with Oracle?</p>
  
  <p>Below is the command and settings.py.</p>
  
  <pre><code>python manage.py inspectdb --database xxx_db
  
  # This is an auto-generated Django model module.
  # You'll have to do the following manually to clean this up:
  #     * Rearrange models' order
  #     * Make sure each model has one field with primary_key=True
  # Feel free to rename the models, but don't rename db_table values or field names.
  #
  # Also note: You'll have to insert the output of 'django-admin.py sqlcustom [appname]'
  # into your database.
  
  from django.db import models
  </code></pre>
  
  <p>settings.py</p>
  
  <pre><code>DATABASES = {
      'xxx_db': {
          'ENGINE': 'django.db.backends.oracle',
          'NAME': 'abc',
          'USER': 'abc_read',
          'PASSWORD': 'abc_read',
          'HOST': 'apps.domain.com',
          'PORT': 'xxxx'
          },
      'default': {
          'ENGINE': 'django.db.backends.mysql',
          'NAME': 'aaaa',
          'USER': 'aaaa',
          'PASSWORD': 'xxxx',
          'HOST': '/tmp/mysql.sock',
          'PORT': ''
          }
  }
  </code></pre>