ORA-01861: литерал не соответствует строке формата при выполнении get model object в django

У меня есть объект модели в django, как …

from django.db import models class Person(models.Model): employee_title = models.CharField(max_length=150) pk_person_id = models.IntegerField(primary_key=True) department_name = models.CharField(max_length=240) cost_center = models.CharField(max_length=150) user_name = models.CharField(max_length=100) def __str__(self): return self.user_name class Meta: managed = False db_table = 'company_hr_idm_data_v' 

и, на мой взгляд, я делаю простой доступ к объекту Person так, как …

 testobj = Person.objects.using('oracle').get(pk=4) 

Ошибки кода с помощью DatabaseError который говорит

ORA-01861: литерал не соответствует строке формата

Вот код трассировки стека, когда у меня установлен режим отладки true в моих настройках.py

 Environment: Request Method: GET Request URL: http://127.0.0.1:8000/roles/testing Django Version: 1.7.2 Python Version: 2.7.6 Installed Applications: ('django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', 'roles') Installed Middleware: ('django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.common.CommonMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.auth.middleware.SessionAuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middleware.clickjacking.XFrameOptionsMiddleware') Traceback: File "/Users/adjeibad/.virtualenvs/wwtmlserver/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response 111. response = wrapped_callback(request, *callback_args, **callback_kwargs) File "/Users/adjeibad/.virtualenvs/wwtmlserver/entitlements/roles/views/Organization.py" in test 9. testobj = Person.objects.using('oracle').get(pk=4) File "/Users/adjeibad/.virtualenvs/wwtmlserver/lib/python2.7/site- packages/django/db/models/query.py" in get 351. num = len(clone) File "/Users/adjeibad/.virtualenvs/wwtmlserver/lib/python2.7/site-packages/django/db/models/query.py" in __len__ 122. self._fetch_all() File "/Users/adjeibad/.virtualenvs/wwtmlserver/lib/python2.7/site-packages/django/db/models/query.py" in _fetch_all 966. self._result_cache = list(self.iterator()) File "/Users/adjeibad/.virtualenvs/wwtmlserver/lib/python2.7/site-packages/django/db/models/query.py" in iterator 265. for row in compiler.results_iter(): File "/Users/adjeibad/.virtualenvs/wwtmlserver/lib/python2.7/site-packages/django/db/models/sql/compiler.py" in results_iter 700. for rows in self.execute_sql(MULTI): File "/Users/adjeibad/.virtualenvs/wwtmlserver/lib/python2.7/site-packages/django/db/models/sql/compiler.py" in execute_sql 786. cursor.execute(sql, params) File "/Users/adjeibad/.virtualenvs/wwtmlserver/lib/python2.7/site-packages/django/db/backends/utils.py" in execute 81. return super(CursorDebugWrapper, self).execute(sql, params) File "/Users/adjeibad/.virtualenvs/wwtmlserver/lib/python2.7/site-packages/django/db/backends/utils.py" in execute 65. return self.cursor.execute(sql, params) File "/Users/adjeibad/.virtualenvs/wwtmlserver/lib/python2.7/site-packages/django/db/utils.py" in __exit__ 94. six.reraise(dj_exc_type, dj_exc_value, traceback) File "/Users/adjeibad/.virtualenvs/wwtmlserver/lib/python2.7/site-packages/django/db/backends/utils.py" in execute 65. return self.cursor.execute(sql, params) File "/Users/adjeibad/.virtualenvs/wwtmlserver/lib/python2.7/site- packages/django/db/backends/oracle/base.py" in execute 916. return self.cursor.execute(query, self._param_generator(params)) Exception Type: DatabaseError at /roles/testing Exception Value: ORA-01861: literal does not match format string 

Ой! также вот запрос, который сгенерирован …

 SELECT * FROM (SELECT ROWNUM AS "_RN", "_SUB".* FROM (SELECT "COMPANY_HR_IDM_DATA_V"."EMPLOYEE_TITLE", "COMPANY_HR_IDM_DATA_V"."PK_PERSON_ID", "COMPANY_HR_IDM_DATA_V"."DEPARTMENT_NAME", "COMPANY_HR_IDM_DATA_V"."COST_CENTER", "COMPANY_HR_IDM_DATA_V"."USER_NAME" FROM "COMPANY_HR_IDM_DATA_V" WHERE "COMPANY_HR_IDM_DATA_V"."PK_PERSON_ID" = :arg0) "_SUB" WHERE ROWNUM <= 21) WHERE "_RN" > 0 

Я попытался предоставить как можно больше информации, может ли кто-нибудь угодить мне в правильном направлении?