Migrating to initial migration: "ORA-00955: name is already used by an existing object"

Dear Django developers,

in a Django project that was created pre-1.7, did not use South before,
and was recently upgraded to Django 1.7 and is otherwise fine, I'm now
trying to convert it to use migrations, following the docs at
<https://docs.djangoproject.com/en/1.7/topics/migrations/#adding-migrations-to-apps>.

It seems that creating the initial migrations with `makemigrations`
works well, but the first run of `migrate` aborts with error
"django.db.utils.DatabaseError: ORA-00955: name is already used by an
existing object". Please see the full output below.

Unfortunately, I don't know enough about migrations to be able to debug
this myself, or to understand what the problem is.

What are good next steps, or where should I look for the cause of this
problem?

Best regards,
Carsten



(Zeiterfassung)carsten@blue-ring-ubuntu:~/Zeiterfassung$ rm -rf
Lori/migrations/

(Zeiterfassung)carsten@blue-ring-ubuntu:~/Zeiterfassung$ ./manage.py
makemigrations Lori
Migrations for 'Lori':
0001_initial.py:
- Create model AUB
- Create model Ausbezahlt
- Create model Aushilfslohn
- Create model Bereich
- Create model Code
- Create model Erfasst
- Create model KalenderEintrag
- Create model Kostenstelle
- Create model Mitarbeiter
- Create model MonatsSalden
- Create model Oeffnungszeiten
- Create model PekoBenchmarkCache
- Create model PekoGewichte
- Create model Region
- Create model Schicht
- Create model Status
- Create model SystemEmailEmpfaenger
- Create model TempMaBereichZuordnung
- Create model Termin
- Create model Umsatzgruppe
- Create model UserProfile
- Create model Vertragsverlauf
- Create model Vorblendplan
- Create model Vortraege
- Alter unique_together for schicht (1 constraint(s))
- Add field region to pekogewichte
- Add field fil_gruppe to pekobenchmarkcache
- Alter unique_together for pekobenchmarkcache (1 constraint(s))
- Alter unique_together for monatssalden (1 constraint(s))
- Add field tmp_bereiche to mitarbeiter
- Add field vbp_neu to mitarbeiter
- Add field fil_gruppe to kostenstelle
- Add field parent to kostenstelle
- Add field region to kostenstelle
- Add field kstellen to kalendereintrag
- Add field regionen to kalendereintrag
- Add field key to erfasst
- Add field last_user to erfasst
- Add field status to erfasst
- Alter unique_together for erfasst (1 constraint(s))
- Add field region to bereich
- Add field key to ausbezahlt
- Alter unique_together for ausbezahlt (1 constraint(s))
- Add field ma to aub

(Zeiterfassung)carsten@blue-ring-ubuntu:~/Zeiterfassung$ ./manage.py migrate
Operations to perform:
Apply all migrations: admin, contenttypes, Lori, auth, sessions
Running migrations:
Applying Lori.0001_initial...Traceback (most recent call last):
File "./manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File
"/home/carsten/.virtualenvs/Zeiterfassung/local/lib/python2.7/site-packages/django/core/management/__init__.py",
line 385, in execute_from_command_line
utility.execute()
File
"/home/carsten/.virtualenvs/Zeiterfassung/local/lib/python2.7/site-packages/django/core/management/__init__.py",
line 377, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File
"/home/carsten/.virtualenvs/Zeiterfassung/local/lib/python2.7/site-packages/django/core/management/base.py",
line 288, in run_from_argv
self.execute(*args, **options.__dict__)
File
"/home/carsten/.virtualenvs/Zeiterfassung/local/lib/python2.7/site-packages/django/core/management/base.py",
line 338, in execute
output = self.handle(*args, **options)
File
"/home/carsten/.virtualenvs/Zeiterfassung/local/lib/python2.7/site-packages/django/core/management/commands/migrate.py",
line 161, in handle
executor.migrate(targets, plan, fake=options.get("fake", False))
File
"/home/carsten/.virtualenvs/Zeiterfassung/local/lib/python2.7/site-packages/django/db/migrations/executor.py",
line 68, in migrate
self.apply_migration(migration, fake=fake)
File
"/home/carsten/.virtualenvs/Zeiterfassung/local/lib/python2.7/site-packages/django/db/migrations/executor.py",
line 102, in apply_migration
migration.apply(project_state, schema_editor)
File
"/home/carsten/.virtualenvs/Zeiterfassung/local/lib/python2.7/site-packages/django/db/migrations/migration.py",
line 108, in apply
operation.database_forwards(self.app_label, schema_editor,
project_state, new_state)
File
"/home/carsten/.virtualenvs/Zeiterfassung/local/lib/python2.7/site-packages/django/db/migrations/operations/models.py",
line 36, in database_forwards
schema_editor.create_model(model)
File
"/home/carsten/.virtualenvs/Zeiterfassung/local/lib/python2.7/site-packages/django/db/backends/schema.py",
line 261, in create_model
self.execute(sql, params)
File
"/home/carsten/.virtualenvs/Zeiterfassung/local/lib/python2.7/site-packages/django/db/backends/schema.py",
line 102, in execute
cursor.execute(sql, params)
File
"/home/carsten/.virtualenvs/Zeiterfassung/local/lib/python2.7/site-packages/django/db/backends/utils.py",
line 81, in execute
return super(CursorDebugWrapper, self).execute(sql, params)
File
"/home/carsten/.virtualenvs/Zeiterfassung/local/lib/python2.7/site-packages/django/db/backends/utils.py",
line 65, in execute
return self.cursor.execute(sql, params)
File
"/home/carsten/.virtualenvs/Zeiterfassung/local/lib/python2.7/site-packages/django/db/utils.py",
line 94, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File
"/home/carsten/.virtualenvs/Zeiterfassung/local/lib/python2.7/site-packages/django/db/backends/utils.py",
line 65, in execute
return self.cursor.execute(sql, params)
File
"/home/carsten/.virtualenvs/Zeiterfassung/local/lib/python2.7/site-packages/django/db/backends/oracle/base.py",
line 916, in execute
return self.cursor.execute(query, self._param_generator(params))
django.db.utils.DatabaseError: ORA-00955: name is already used by an
existing object

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