I am running a shop use web.py. the database I use is sqlite.
Now, some SQLAlchemy session error come out.
2012-04-05 10:01:33: (mod_fastcgi.c.2711) FastCGI-stderr: Traceback
(most recent call last):
File "/usr/local/lib/python2.6/dist-packages/web.py-0.34-py2.6.egg/
web/application.py", line 242, in process
return self.handle()
File "/usr/local/lib/python2.6/dist-packages/web.py-0.34-py2.6.egg/
web/application.py", line 233, in handle
return self._delegate(fn, self.fvars, args)
File "/usr/local/lib/python2.6/dist-packages/web.py-0.34-py2.6.egg/
web/application.py", line 399, in _delegate
return handle_class(f)
File "/usr/local/lib/python2.6/dist-packages/web.py-0.34-py2.6.egg/
web/application.py", line 390, in handle_class
return tocall(*args)
File "/home/shopapp/users.py", line 291, in GET
user =
web.ctx.orm.query(User).filter(User.username==web.ctx.session.user).first()
File "/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.6.8-
py2.6.egg/sqlalchemy/orm/query.py", line 1652, in first
ret = list(self[0:1])
File "/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.6.8-
py2.6.egg/sqlalchemy/orm/query.py", line 1560, in __getitem__
return list(res)
File "/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.6.8-
py2.6.egg/sqlalchemy/orm/query.py", line 1721, in __iter__
return self._execute_and_instances(context)
File "/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.6.8-
py2.6.egg/sqlalchemy/orm/query.py", line 1726, in
_execute_and_instances
mapper=self._mapper_zero_or_none())
File "/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.6.8-
py2.6.egg/sqlalchemy/orm/session.py", line 724, in execute
clause, params or {})
File "/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.6.8-
py2.6.egg/sqlalchemy/engine/base.py", line 1191, in execute
params)
File "/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.6.8-
py2.6.egg/sqlalchemy/engine/base.py", line 1269, in
_execute_clauseelement
parameters=params
File "/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.6.8-
py2.6.egg/sqlalchemy/engine/base.py", line 1382, in
__create_execution_context
None, None)
File "/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.6.8-
py2.6.egg/sqlalchemy/engine/base.py", line 1377, in
__create_execution_context
connection=self, **kwargs)
File "/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.6.8-
py2.6.egg/sqlalchemy/engine/default.py", line 392, in __init__
self.cursor = self.create_cursor()
File "/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.6.8-
py2.6.egg/sqlalchemy/engine/default.py", line 534, in create_cursor
return self._connection.connection.cursor()
File "/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.6.8-
py2.6.egg/sqlalchemy/pool.py", line 423, in cursor
c = self.connection.cursor(*args, **kwargs)
ProgrammingError: (ProgrammingError) Cannot operate on a closed
database. None [{}]
Traceback (most recent call last):
File "/usr/local/lib/python2.6/dist-packages/web.py-0.34-py2.6.egg/
web/application.py", line 240, in process
return p(lambda: process(processors))
File "/home/shopapp/models.py", line 31, in load_sqla
web.ctx.orm.commit()
File "/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.6.8-
py2.6.egg/sqlalchemy/orm/scoping.py", line 139, in do
return getattr(self.registry(), name)(*args, **kwargs)
File "/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.6.8-
py2.6.egg/sqlalchemy/orm/session.py", line 614, in commit
self.transaction.commit()
File "/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.6.8-
py2.6.egg/sqlalchemy/orm/session.py", line 389, in commit
t[1].commit()
File "/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.6.8-
py2.6.egg/sqlalchemy/engine/base.py", line 1535, in commit
self._do_commit()
File "/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.6.8-
py2.6.egg/sqlalchemy/engine/base.py", line 1562, in _do_commit
self.connection._commit_impl()
File "/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.6.8-
py2.6.egg/sqlalchemy/engine/base.py", line 1097, in _commit_impl
self.engine.dialect.do_commit(self.connection)
File "/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.6.8-
py2.6.egg/sqlalchemy/engine/base.py", line 917, in connection
"Can't reconnect until invalid "
InvalidRequestError: Can't reconnect until invalid transaction is
rolled back
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