Dear all Maybe one of you can shed some light on this error message that I see in the log file for one of my handler processes. I get about one of them per second. The effect is that most of the jobs remain in the "waiting to run" stage. The postgres database is running on a separate server and appear to be doing just fine. Any help is greatly appreciated. Thanks Ulf --- galaxy.jobs.handler ERROR 2014-10-07 10:32:24,676 Exception in monitor_step Traceback (most recent call last): File "/phengs/hpc_storage/home/galaxy_hpc/galaxy-dist/lib/galaxy/jobs/handler.py", line 161, in __monitor self.__monitor_step() File "/phengs/hpc_storage/home/galaxy_hpc/galaxy-dist/lib/galaxy/jobs/handler.py", line 184, in __monitor_step hda_not_ready = self.sa_session.query(model.Job.id).enable_eagerloads(False) \ File "/phengs/hpc_storage/home/galaxy_hpc/galaxy-dist/eggs/SQLAlchemy-0.7.9-py2.6-linux-x86_64-ucs4.egg/sqlalchemy/orm/scoping.py", line 114, in do return getattr(self.registry(), name)(*args, **kwargs) File "/phengs/hpc_storage/home/galaxy_hpc/galaxy-dist/eggs/SQLAlchemy-0.7.9-py2.6-linux-x86_64-ucs4.egg/sqlalchemy/orm/session.py", line 1088, in query return self._query_cls(entities, self, **kwargs) File "/phengs/hpc_storage/home/galaxy_hpc/galaxy-dist/eggs/SQLAlchemy-0.7.9-py2.6-linux-x86_64-ucs4.egg/sqlalchemy/orm/query.py", line 108, in __init__ self._set_entities(entities) File "/phengs/hpc_storage/home/galaxy_hpc/galaxy-dist/eggs/SQLAlchemy-0.7.9-py2.6-linux-x86_64-ucs4.egg/sqlalchemy/orm/query.py", line 117, in _set_entities self._setup_aliasizers(self._entities) File "/phengs/hpc_storage/home/galaxy_hpc/galaxy-dist/eggs/SQLAlchemy-0.7.9-py2.6-linux-x86_64-ucs4.egg/sqlalchemy/orm/query.py", line 132, in _setup_aliasizers _entity_info(entity) File "/phengs/hpc_storage/home/galaxy_hpc/galaxy-dist/eggs/SQLAlchemy-0.7.9-py2.6-linux-x86_64-ucs4.egg/sqlalchemy/orm/util.py", line 578, in _entity_info mapperlib.configure_mappers() File "/phengs/hpc_storage/home/galaxy_hpc/galaxy-dist/eggs/SQLAlchemy-0.7.9-py2.6-linux-x86_64-ucs4.egg/sqlalchemy/orm/mapper.py", line 2260, in configure_mappers raise e InvalidRequestError: One or more mappers failed to initialize - can't proceed with initialization of other mappers. Original exception was: When initializing mapper Mapper|Queue|kombu_queue, expression 'Message' failed to locate a name ("name 'Message' is not defined"). If this is a class name, consider adding this relationship() to the <class 'kombu.transport.sqlalchemy.Queue'> class after both dependent classes have been defined. --- ************************************************************************** The information contained in the EMail and any attachments is confidential and intended solely and for the attention and use of the named addressee(s). It may not be disclosed to any other person without the express authority of Public Health England, or the intended recipient, or both. If you are not the intended recipient, you must not disclose, copy, distribute or retain this message or any part of it. This footnote also confirms that this EMail has been swept for computer viruses by Symantec.Cloud, but please re-sweep any attachments before opening or saving. http://www.gov.uk/PHE **************************************************************************