nothing is weakly referenced within the block where that exception is
being thrown.  the only place weakrefs are used outside of the ORM is
a couple of dictionaries in pool.py.  you havent said what reproduces
this problem ?  you just start the app, and it happens every time ?


On May 31, 6:01 pm, "Mike Orr" <[EMAIL PROTECTED]> wrote:
> I've been getting this on my Pylons site.
>
> sqlalchemy.exceptions.SQLError: (ReferenceError) weakly-referenced
> object no longer exists
>
> It's trying to execute an ORM .select() call.  The first time was
> after a "MySQL server has gone away" error, so I assumed some mapped
> instances had been orphaned.  But now I'm still getting it even though
> I've set .pool_recycle to 1 hour and restarted the application several
> times.
>
> I've got SQLAlchemy 0.3.7 on the server, which is where the error is
> occuring.  My workstation has the trunk version, but I probably don't
> keep the app running long enough to give this a chance to happen.
>
> The full traceback follows.
>
> File '/mnt/data/www/apps/inews2/inews/controllers/main.py', line 14 in index
>   c.top = model.list_incidents(top_only=True)
> File '/mnt/data/www/apps/inews2/inews/models/__init__.py', line 60 in
> list_incidents
>   return q.select(order_by=order_by, offset=offset, limit=limit)
> File 
> '/mnt/data/www/apps/inews2/wenv-inews/lib/python2.4/SQLAlchemy-0.3.7-py2.4.egg/sqlalchemy/orm/query.py',
> line 319 in select
>   return self.select_whereclause(whereclause=arg, **kwargs)
> File 
> '/mnt/data/www/apps/inews2/wenv-inews/lib/python2.4/SQLAlchemy-0.3.7-py2.4.egg/sqlalchemy/orm/query.py',
> line 326 in select_whereclause
>   return self._select_statement(statement, params=params)
> File 
> '/mnt/data/www/apps/inews2/wenv-inews/lib/python2.4/SQLAlchemy-0.3.7-py2.4.egg/sqlalchemy/orm/query.py',
> line 927 in _select_statement
>   return self.execute(statement, params=params, **kwargs)
> File 
> '/mnt/data/www/apps/inews2/wenv-inews/lib/python2.4/SQLAlchemy-0.3.7-py2.4.egg/sqlalchemy/orm/query.py',
> line 831 in execute
>   result = self.session.execute(self.mapper, clauseelement, params=params)
> File 
> '/mnt/data/www/apps/inews2/wenv-inews/lib/python2.4/SQLAlchemy-0.3.7-py2.4.egg/sqlalchemy/orm/session.py',
> line 183 in execute
>   return self.connection(mapper,
> close_with_result=True).execute(clause, params, **kwargs)
> File 
> '/mnt/data/www/apps/inews2/wenv-inews/lib/python2.4/SQLAlchemy-0.3.7-py2.4.egg/sqlalchemy/engine/base.py',
> line 509 in execute
>   return Connection.executors[c](self, object, *multiparams, **params)
> File 
> '/mnt/data/www/apps/inews2/wenv-inews/lib/python2.4/SQLAlchemy-0.3.7-py2.4.egg/sqlalchemy/engine/base.py',
> line 549 in execute_clauseelement
>   return self.execute_compiled(elem.compile(dialect=self.dialect,
> parameters=param), *multiparams, **params)
> File 
> '/mnt/data/www/apps/inews2/wenv-inews/lib/python2.4/SQLAlchemy-0.3.7-py2.4.egg/sqlalchemy/engine/base.py',
> line 560 in execute_compiled
>   self._execute_raw(context)
> File 
> '/mnt/data/www/apps/inews2/wenv-inews/lib/python2.4/SQLAlchemy-0.3.7-py2.4.egg/sqlalchemy/engine/base.py',
> line 573 in _execute_raw
>   self._execute(context)
> File 
> '/mnt/data/www/apps/inews2/wenv-inews/lib/python2.4/SQLAlchemy-0.3.7-py2.4.egg/sqlalchemy/engine/base.py',
> line 591 in _execute
>   raise exceptions.SQLError(context.statement, context.parameters, e)
> SQLError: (ReferenceError) weakly-referenced object no longer exists
> u'SELECT `IN_Incident`.is_type_other AS `IN_Incident_is_type_other`,
> `IN_Incident`.measure_shore AS `IN_Incident_measure_shore`,
> `IN_Incident`.ptl_search_min AS `IN_Incident_ptl_search_min`,
> `IN_Incident`.measure_burn AS `IN_Incident_measure_burn`,
> `IN_Incident`.actl_entered_max AS `IN_Incident_actl_entered_max`,
> `IN_Incident`.actl_search_min AS `IN_Incident_actl_search_min`,
> `IN_Incident`.is_type_drill AS `IN_Incident_is_type_drill`,
> `IN_Incident`.lead_ssc AS `IN_Incident_lead_ssc`,
> `IN_Incident`.measure_skim AS `IN_Incident_measure_skim`,
> `IN_Incident`.orr_id AS `IN_Incident_orr_id`, `IN_Incident`.jic AS
> `IN_Incident_jic`, `IN_Incident`.ptl_is_mass AS
> `IN_Incident_ptl_is_mass`, `IN_Incident`.actl_search_max AS
> `IN_Incident_actl_search_max`, `IN_Incident`.lon AS `IN_Incident_lon`,
> `IN_Incident`.notified_by AS `IN_Incident_notified_by`,
> `IN_Incident`.actl_entered_min AS `IN_Incident_actl_entered_min`,
> `IN_Incident`.location AS `IN_Incident_location`,
> `IN_Incident`.inews_date AS `IN_Incident_inews_date`,
> `IN_Incident`.ptl_search_max AS `IN_Incident_ptl_search_max`,
> `IN_Incident`.public_affairs_html AS
> `IN_Incident_public_affairs_html`, `IN_Incident`.cause AS
> `IN_Incident_cause`, `IN_Incident`.ptl_unit AS `IN_Incident_ptl_unit`,
> `IN_Incident`.noaa_divisions_involved AS
> `IN_Incident_noaa_divisions_involved`, `IN_Incident`.ptl_entered_max
> AS `IN_Incident_ptl_entered_max`, `IN_Incident`.description AS
> `IN_Incident_description`, `IN_Incident`.measure_bio AS
> `IN_Incident_measure_bio`, `IN_Incident`.is_type_oil AS
> `IN_Incident_is_type_oil`, `IN_Incident`.is_top AS
> `IN_Incident_is_top`, `IN_Incident`.actl_unit AS
> `IN_Incident_actl_unit`, `IN_Incident`.lat AS `IN_Incident_lat`,
> `IN_Incident`.is_type_ptl_bio AS `IN_Incident_is_type_ptl_bio`,
> `IN_Incident`.effort AS `IN_Incident_effort`,
> `IN_Incident`.measure_disperse AS `IN_Incident_measure_disperse`,
> `IN_Incident`.name AS `IN_Incident_name`, `IN_Incident`.commodity AS
> `IN_Incident_commodity`, `IN_Incident`.other_cause AS
> `IN_Incident_other_cause`, `IN_Incident`.is_type_ptl_oil AS
> `IN_Incident_is_type_ptl_oil`, `IN_Incident`.is_type_bio AS
> `IN_Incident_is_type_bio`, `IN_Incident`.actl_is_mass AS
> `IN_Incident_actl_is_mass`, `IN_Incident`.is_involve_dac AS
> `IN_Incident_is_involve_dac`, `IN_Incident`.ptl_entered_min AS
> `IN_Incident_ptl_entered_min` \nFROM `IN_Incident` \nWHERE
> `IN_Incident`.is_top ORDER BY inews_date DESC \n LIMIT 99 OFFSET 0' []
>
> --
> Mike Orr <[EMAIL PROTECTED]>


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