id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
36698	isinstance() arg 2 must be a type, a tuple of types, or a union when using Oracle DB	drussca		"I have a Django project that uses and Oracle DB. Django version: 5.2.7.

I've had to modify .../django/db/backends/oracle/base.py to make the setup work as I was getting:

{{{
  File ""/home/.../lib/python3.12/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
}}}

After this most things work, EXCEPT when I try to do something like this:

{{{
someobjects = someclass.somerelatedobject.filter(effdate__lte=reference_date)
someobjectssubset = someobjects.filter(expirdate__gte=reference_date)
otherobjectssubset = someobjects .filter(rlexpirdate__isnull=True)
}}}

For this I still get the isinstance() arg 2 must be a type, a tuple of types, or a union error.
"	Bug	closed	Database layer (models, ORM)	5.2	Normal	duplicate		drussca	Unreviewed	0	0	0	0	0	0