Yes, I use wsgi server of the python library bottle and I don't have any problem but when I want to use the same script via the apache web server I get only a server error no exception could be caught not even by using the code snippet from you (Thanks by the way). I simply included many print lines that appear in the error log file. The create_engine fails (I know it from try and except) but I cannot catch any exception that sheds some light on the reason of the failure.
On Jul 18, 4:06 pm, "King Simon-NFHD78" <simon.k...@motorolasolutions.com> wrote: > > -----Original Message----- > > From: sqlalchemy@googlegroups.com [mailto:sqlalchemy@googlegroups.com] > > On Behalf Of Eduardo > > Sent: 18 July 2011 14:12 > > To: sqlalchemy > > Subject: [sqlalchemy] Re: information about filed create_engine > > > I dont get any log. The access strings from the local and wsgi > > applications are identical so the script should connect to the same > > database. I encountered problems with create_engine. What type of > > exception can this method throw? > > The application catches: TypeError, ValueError and OperationalError. > > Is there any other Error or some universal sqlalchemy error that can > > indicate me where the problem is? > > Thanks > > I'm sorry - I still don't understand your setup. How do you know that > you've "encountered problems with create_engine" if you're not getting > any kind of exception from it? > > If you really think that create_engine is failing but the exception is > being caught silently, why not change your code so that you've got an > exception handler around create_engine: > > try: > engine = create_engine(your_connection_string) > except Exception, e: > import traceback > log_file = open('/tmp/sqlalchemy_errors', 'w+') > log_file.write('Exception from create_engine\n') > log_file.write('%s\n' % e) > log_file.write(traceback.format_exc()) > raise > > But your life would be much easier if you learnt how to configure > SQLAlchemy's built-in logging features: > > http://www.sqlalchemy.org/docs/core/engines.html#configuring-logging > > What WSGI server and web framework are you using (if any)? It sounds > like they are hampering your efforts to debug this. You might find it > easier to run a very simple wsgi server such as the one in the wsgiref > module: > > http://docs.python.org/library/wsgiref.html#module-wsgiref.simple_server > > Simon -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.
