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 37285 `manage.py check` started requiring DB to exist (PostgreSQL) Ran Benita "Hi, I just attempted 6.0 -> 6.1 upgrade, and found that `./manage.py check` started requiring the DB to exist. I am using PostgreSQL, and the traceback suggests this may be PG-backend-specific due to the new PG `supports_virtual_generated_columns` feature in 6.1. It checks the PG version which I guess needs an active DB connection. This is a problem for me because I run `./manage.py check` in CI without the DB present. I think it makes sense because I run it in the ""lint"" phase of my CI checks, and there has not previously been a reason to have the DB exist in CI (note this is the e.g. `mydb` defined in `DATABASES`, not `test_mydb`). If this is intended behavior that `check` requires a DB to be present, and my use just happened to work before, it's easy enough to workaround, but I thought perhaps it might not be intended. Traceback: {{{ $ ./manage.py check Traceback (most recent call last): File ""snipped/.venv/lib/python3.14/site-packages/django/db/backends/base/base.py"", line 279, in ensure_connection self.connect() ~~~~~~~~~~~~^^ File ""snipped/.venv/lib/python3.14/site-packages/django/utils/asyncio.py"", line 26, in inner return func(*args, **kwargs) File ""snipped/.venv/lib/python3.14/site-packages/django/db/backends/base/base.py"", line 256, in connect self.connection = self.get_new_connection(conn_params) ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^ File ""snipped/.venv/lib/python3.14/site-packages/django/utils/asyncio.py"", line 26, in inner return func(*args, **kwargs) File ""snipped/.venv/lib/python3.14/site-packages/django/db/backends/postgresql/base.py"", line 345, in get_new_connection connection = self.Database.connect(**conn_params) File ""snipped/.venv/lib/python3.14/site-packages/psycopg/connection.py"", line 122, in connect raise last_ex.with_traceback(None) psycopg.OperationalError: connection failed: connection to server on socket ""/var/run/postgresql/.s.PGSQL.5432"" failed: FATAL: database ""mydb"" does not exist The above exception was the direct cause of the following exception: Traceback (most recent call last): File ""snipped/manage.py"", line 5, in main() ~~~~^^ File ""snipped/manage.py"", line 73, in main execute_from_command_line(sys.argv) ~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^ File ""snipped/.venv/lib/python3.14/site-packages/django/core/management/__init__.py"", line 443, in execute_from_command_line utility.execute() ~~~~~~~~~~~~~~~^^ File ""snipped/.venv/lib/python3.14/site-packages/django/core/management/__init__.py"", line 437, in execute self.fetch_command(subcommand).run_from_argv(self.argv) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^ File ""snipped/.venv/lib/python3.14/site-packages/django/core/management/base.py"", line 422, in run_from_argv self.execute(*args, **cmd_options) ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^ File ""snipped/.venv/lib/python3.14/site-packages/django/core/management/base.py"", line 466, in execute output = self.handle(*args, **options) File ""snipped/.venv/lib/python3.14/site-packages/django/core/management/commands/check.py"", line 81, in handle self.check( ~~~~~~~~~~^ app_configs=app_configs, ^^^^^^^^^^^^^^^^^^^^^^^^ ...<4 lines>... databases=options[""databases""], ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ) ^ File ""snipped/.venv/lib/python3.14/site-packages/django/core/management/base.py"", line 498, in check all_issues = checks.run_checks( app_configs=app_configs, ...<2 lines>... databases=databases, ) File ""snipped/.venv/lib/python3.14/site-packages/django/core/checks/registry.py"", line 99, in run_checks new_errors = check(app_configs=app_configs, databases=databases) File ""snipped/.venv/lib/python3.14/site-packages/django/core/checks/model_checks.py"", line 36, in check_all_models errors.extend(model.check(**kwargs)) ~~~~~~~~~~~^^^^^^^^^^ File ""snipped/.venv/lib/python3.14/site-packages/django/db/models/base.py"", line 1785, in check *cls._check_fields(**kwargs), ~~~~~~~~~~~~~~~~~^^^^^^^^^^ File ""snipped/.venv/lib/python3.14/site-packages/django/db/models/base.py"", line 1948, in _check_fields errors.extend(field.check(**kwargs)) ~~~~~~~~~~~^^^^^^^^^^ File ""snipped/.venv/lib/python3.14/site-packages/django/db/models/fields/generated.py"", line 84, in check *self._check_supported(databases), ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^ File ""snipped/.venv/lib/python3.14/site-packages/django/db/models/fields/generated.py"", line 135, in _check_supported connection.features.supports_virtual_generated_columns File ""snipped/.venv/lib/python3.14/site-packages/django/utils/functional.py"", line 47, in __get__ res = instance.__dict__[self.name] = self.func(instance) ~~~~~~~~~^^^^^^^^^^ File ""snipped/.venv/lib/python3.14/site-packages/django/db/backends/postgresql/features.py"", line 186, in is_postgresql_18 return self.connection.pg_version >= 180000 ^^^^^^^^^^^^^^^^^^^^^^^^^^ File ""snipped/.venv/lib/python3.14/site-packages/django/utils/functional.py"", line 47, in __get__ res = instance.__dict__[self.name] = self.func(instance) ~~~~~~~~~^^^^^^^^^^ File ""snipped/.venv/lib/python3.14/site-packages/django/db/backends/postgresql/base.py"", line 556, in pg_version with self.temporary_connection(): ~~~~~~~~~~~~~~~~~~~~~~~~~^^ File "".local/share/uv/python/cpython-3.14.6-linux-x86_64-gnu/lib/python3.14/contextlib.py"", line 141, in __enter__ return next(self.gen) File ""snipped/.venv/lib/python3.14/site-packages/django/db/backends/base/base.py"", line 695, in temporary_connection with self.cursor() as cursor: ~~~~~~~~~~~^^ File ""snipped/.venv/lib/python3.14/site-packages/django/utils/asyncio.py"", line 26, in inner return func(*args, **kwargs) File ""snipped/.venv/lib/python3.14/site-packages/django/db/backends/base/base.py"", line 320, in cursor return self._cursor() ~~~~~~~~~~~~^^ File ""snipped/.venv/lib/python3.14/site-packages/django/db/backends/base/base.py"", line 296, in _cursor self.ensure_connection() ~~~~~~~~~~~~~~~~~~~~~~^^ File ""snipped/.venv/lib/python3.14/site-packages/django/utils/asyncio.py"", line 26, in inner return func(*args, **kwargs) File ""snipped/.venv/lib/python3.14/site-packages/django/db/backends/base/base.py"", line 278, in ensure_connection with self.wrap_database_errors: ^^^^^^^^^^^^^^^^^^^^^^^^^ File ""snipped/.venv/lib/python3.14/site-packages/django/db/utils.py"", line 94, in __exit__ raise dj_exc_value.with_traceback(traceback) from exc_value File ""snipped/.venv/lib/python3.14/site-packages/django/db/backends/base/base.py"", line 279, in ensure_connection self.connect() ~~~~~~~~~~~~^^ File ""snipped/.venv/lib/python3.14/site-packages/django/utils/asyncio.py"", line 26, in inner return func(*args, **kwargs) File ""snipped/.venv/lib/python3.14/site-packages/django/db/backends/base/base.py"", line 256, in connect self.connection = self.get_new_connection(conn_params) ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^ File ""snipped/.venv/lib/python3.14/site-packages/django/utils/asyncio.py"", line 26, in inner return func(*args, **kwargs) File ""snipped/.venv/lib/python3.14/site-packages/django/db/backends/postgresql/base.py"", line 345, in get_new_connection connection = self.Database.connect(**conn_params) File ""snipped/.venv/lib/python3.14/site-packages/psycopg/connection.py"", line 122, in connect raise last_ex.with_traceback(None) django.db.utils.OperationalError: connection failed: connection to server on socket ""/var/run/postgresql/.s.PGSQL.5432"" failed: FATAL: database ""mydb"" does not exist }}}" Bug closed Core (System checks) 6.1 Normal duplicate Unreviewed 0 0 0 0 0 0