Sto usando Django con un database Oracle remoto, e ottenere un “Tabella non esiste” Errore

Question

Ogni volta che eseguo una query semplice utilizzando il Django ORM su una tabella nel database Oracle remoto, ottengo questo errore:

>>> from apps.dl.models import Article
>>> Article.objects.using('dl').all()
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/var/www/acm.local/server-env/lib/python2.6/site-packages/django/db/models/query.py", line 68, in __repr__
    data = list(self[:REPR_OUTPUT_SIZE + 1])
  File "/var/www/acm.local/server-env/lib/python2.6/site-packages/django/db/models/query.py", line 83, in __len__
    self._result_cache.extend(list(self._iter))
  File "/var/www/acm.local/server-env/lib/python2.6/site-packages/django/db/models/query.py", line 269, in iterator
    for row in compiler.results_iter():
  File "/var/www/acm.local/server-env/lib/python2.6/site-packages/django/db/models/sql/compiler.py", line 672, in results_iter
    for rows in self.execute_sql(MULTI):
  File "/var/www/acm.local/server-env/lib/python2.6/site-packages/django/db/models/sql/compiler.py", line 727, in execute_sql
    cursor.execute(sql, params)
  File "/var/www/acm.local/server-env/lib/python2.6/site-packages/django/db/backends/util.py", line 15, in execute
    return self.cursor.execute(sql, params)
  File "/var/www/acm.local/server-env/lib/python2.6/site-packages/django/db/backends/oracle/base.py", line 507, in execute
    return self.cursor.execute(query, self._param_generator(params))
DatabaseError: ORA-00942: table or view does not exist

Ecco il modello che sto usando:

class Article(models.Model):
    id = models.CharField(primary_key=True, max_length=12, db_column="ID")
    publication_id = models.CharField(blank=True, null=True, max_length=12, db_column="PUBLICATION_ID")
    issue_id = models.CharField(blank=True, null=True, max_length=12, db_column="ISSUE_ID")
    section_id = models.IntegerField(blank=True, null=True, max_length=12, db_column="SECTION_ID")
    title = models.CharField(blank=True, null=True, max_length=512, db_column="TITLE")
    subtitle = models.CharField(blank=True, null=True, max_length=512, db_column="SUBTITLE")
    page_range = models.CharField(blank=True, null=True, max_length=32, db_column="PAGE_RANGE")
    start_page = models.CharField(blank=True, null=True, max_length=12, db_column="START_PAGE")
    end_page = models.CharField(blank=True, null=True, max_length=12, db_column="END_PAGE")
    article_no = models.CharField(blank=True, null=True, max_length=12, db_column="ARTICLE_NO")
    doi = models.CharField(blank=True, null=True, max_length=128, db_column="DOI")
    publication_date = models.DateTimeField(null=True, max_length=7, db_column="PUBLICATION_DATE")
    author_names = models.CharField(blank=True, null=True, max_length=4000, db_column="AUTHOR_NAMES")
    sort_key = models.IntegerField(null=True, db_column="SORT_KEY")
    abstract = models.TextField(blank=True, null=True, db_column="ABSTRACT")
    citation_url = models.CharField(blank=True, null=True, max_length=128, db_column="CITATION_URL")
    notes = models.CharField(blank=True, null=True, max_length=512, db_column="NOTES")
    downloads6 = models.IntegerField(null=True, db_column="DOWNLOADS6")
    downloads12 = models.IntegerField(null=True, db_column="DOWNLOADS12")
    citings = models.IntegerField(null=True, db_column="CITINGS")
    created_date = models.DateTimeField(db_column="CREATED_DATE")
    short_abstract = models.CharField(blank=True, null=True, max_length=4000, db_column="SHORT_ABSTRACT")
    teaser = models.TextField(blank=True, null=True, max_length=512, db_column="TEASER")
    cacm_id = models.CharField(blank=True, null=True, max_length=12, db_column="CACM_ID")
    cacm_ref = models.CharField(blank=True, null=True, max_length=512, db_column="CACM_REF")
    cacm_only = models.CharField(blank=True, null=True, max_length=1, db_column="CACM_ONLY")
    article_type = models.CharField(blank=True, null=True, max_length=32, db_column="ARTICLE_TYPE")
    article_url = models.TextField(blank=True, null=True, max_length=128, db_column="ARTICLE_TYPE")

    class Meta:
        db_tablespace = "DLDATA"
        db_table = "ARTICLES"
        managed = False

Non ho mai lavorato con un database Oracle prima, quindi sono sicuri di come eseguire il debug di questo problema. Sono sicuro che il mio utente ha privilegi per visualizzare la tabella perché posso guardare con Navicat. Eventuali suggerimenti quanto a come posso risolvere questo problema?

Answer 1

Questo errore è causato da un bug in Django. Mi è stato sempre a causa del l'uso di schemi in Oracle. Il modo in cui si ottiene intorno a questo (per ora) è il seguente:

class MyModel(models.Model):
    # Model stuff...        

    class Meta:
        # ...
        db_table = '"DLDATA"."ARTICLES"'