ProgrammingError: relation “django_session” does not exist error after installing Psycopg2

问题

I started to develop a Django base web application. Everything were fine until I installed Psycopg2 for my database which I created in PstgreSql. Now when I'm trying to open any page in my site, it throws ProgrammingError: relation "django_session" does not exist error.

Request Method:     GET
Request URL:    http://127.0.0.1:8000/login/
Django Version:     1.7
Exception Type:     ProgrammingError
Exception Value:    

relation "django_session" does not exist
LINE 1: ...ession_data", "django_session"."expire_date" FROM "django_se...
                                                             ^

Exception Location:     /home/alex/.virtualenvs/startDjango/local/lib/python2.7/site-packages/django/db/backends/utils.py in execute, line 65
Python Executable:  /home/alex/.virtualenvs/startDjango/bin/python

This is my database setting in Setting.py

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql_psycopg2',
        'NAME': 'myDB',
        'USER': 'alex',
        'PASSWORD': 'mypassword',
        'HOST': '127.0.0.1',
        'PORT': '5432',
    }
}

I'm developing in virtualenvs

Any idea how to fix this? Thanks

回答1:

If you change the database, you should create database for the new database.

Use manage.py migrate command. (or manage.py syncdb if you used it for old database).

回答2:

You can alternatively migrate just the sessions app if you have already run migrate and still getting the error

python manage.py migrate sessions

来源：https://stackoverflow.com/questions/26220689/programmingerror-relation-django-session-does-not-exist-error-after-installin