Opened 45 hours ago
Last modified 43 hours ago
#36650 closed Bug
oracledb-3.4.0 -> TypeError: isinstance() arg 2 must be a type, a tuple of types, or a union — at Initial Version
| Reported by: | MV | Owned by: | |
|---|---|---|---|
| Component: | Database layer (models, ORM) | Version: | 5.2 |
| Severity: | Normal | Keywords: | |
| Cc: | MV | Triage Stage: | Unreviewed |
| Has patch: | no | Needs documentation: | no |
| Needs tests: | no | Patch needs improvement: | no |
| Easy pickings: | no | UI/UX: | no |
Description
When upgrading oracledb to version 3.4.0, Django stops working with error "TypeError: isinstance() arg 2 must be a type, a tuple of types, or a union."
Using oracledb-3.3.0 works as expected.
...
Performing system checks...
System check identified no issues (0 silenced).
2025-10-08 09:18:33,020: INFO: acst_app.models.file: 10001
2025-10-08 09:18:33,023: INFO: acst_app.models.file: 10001 elapsed time 00m00s
Exception in thread django-main-thread:
Traceback (most recent call last):
File "/root/.pyenv/versions/3.13.7/lib/python3.13/threading.py", line 1043, in _bootstrap_inner
self.run()
File "/root/.pyenv/versions/3.13.7/lib/python3.13/threading.py", line 994, in run
self._target(*self._args, self._kwargs)
File "/root/.pyenv/versions/django_acst_venv_3137/lib/python3.13/site-packages/django/utils/autoreload.py", line 64, in wrapper
fn(*args, kwargs)
File "/root/.pyenv/versions/django_acst_venv_3137/lib/python3.13/site-packages/django/core/management/commands/runserver.py", line 137, in inner_run
self.check_migrations()
~
File "/root/.pyenv/versions/django_acst_venv_3137/lib/python3.13/site-packages/django/core/management/base.py", line 587, in check_migrations
executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
File "/root/.pyenv/versions/django_acst_venv_3137/lib/python3.13/site-packages/django/db/migrations/executor.py", line 18, in init
self.loader = MigrationLoader(self.connection)
~
File "/root/.pyenv/versions/django_acst_venv_3137/lib/python3.13/site-packages/django/db/migrations/loader.py", line 58, in init
self.build_graph()
File "/root/.pyenv/versions/django_acst_venv_3137/lib/python3.13/site-packages/django/db/migrations/loader.py", line 235, in build_graph
self.applied_migrations = recorder.applied_migrations()
~
File "/root/.pyenv/versions/django_acst_venv_3137/lib/python3.13/site-packages/django/db/migrations/recorder.py", line 89, in applied_migrations
if self.has_table():
File "/root/.pyenv/versions/django_acst_venv_3137/lib/python3.13/site-packages/django/db/migrations/recorder.py", line 63, in has_table
with self.connection.cursor() as cursor:
File "/root/.pyenv/versions/django_acst_venv_3137/lib/python3.13/site-packages/django/utils/asyncio.py", line 26, in inner
return func(*args, kwargs)
File "/root/.pyenv/versions/django_acst_venv_3137/lib/python3.13/site-packages/django/db/backends/base/base.py", line 320, in cursor
return self._cursor()
File "/root/.pyenv/versions/django_acst_venv_3137/lib/python3.13/site-packages/django/db/backends/base/base.py", line 296, in _cursor
self.ensure_connection()
File "/root/.pyenv/versions/django_acst_venv_3137/lib/python3.13/site-packages/django/utils/asyncio.py", line 26, in inner
return func(*args, kwargs)
File "/root/.pyenv/versions/django_acst_venv_3137/lib/python3.13/site-packages/django/db/backends/base/base.py", line 279, in ensure_connection
self.connect()
File "/root/.pyenv/versions/django_acst_venv_3137/lib/python3.13/site-packages/django/utils/asyncio.py", line 26, in inner
return func(*args, kwargs)
File "/root/.pyenv/versions/django_acst_venv_3137/lib/python3.13/site-packages/django/db/backends/base/base.py", line 258, in connect
self.init_connection_state()
File "/root/.pyenv/versions/django_acst_venv_3137/lib/python3.13/site-packages/django/db/backends/oracle/base.py", line 336, in init_connection_state
cursor.execute(
"SELECT 1 FROM DUAL WHERE DUMMY %s"
% self._standard_operatorscontains,
X,
)
File "/root/.pyenv/versions/django_acst_venv_3137/lib/python3.13/site-packages/django/db/backends/oracle/base.py", line 630, in execute
query, params = self._fix_for_params(query, params, unify_by_values=True)
File "/root/.pyenv/versions/django_acst_venv_3137/lib/python3.13/site-packages/django/db/backends/oracle/base.py", line 627, in _fix_for_params
return query, self._format_params(params)
~
File "/root/.pyenv/versions/django_acst_venv_3137/lib/python3.13/site-packages/django/db/backends/oracle/base.py", line 555, in _format_params
return {k: OracleParam(v, self, True) for k, v in params.items()}
~
File "/root/.pyenv/versions/django_acst_venv_3137/lib/python3.13/site-packages/django/db/backends/oracle/base.py", line 441, in init
elif isinstance(param, (Database.Binary, datetime.timedelta)):
TypeError: isinstance() arg 2 must be a type, a tuple of types, or a union