Hello all, I just found, that Transactions started in the delNotificationFunction's of TransientObjectContainers (in my case a SQL command to purge a transient object from an SQL database) are never commited but seem to be automatically aborted. After adding a call do get_transaction().commit() (which is not directly callable from a PythonScript ... Grmpf ... why not?) everything works. I just want to ask, whether this is desired behavior or if I should open a collector issue against TransientObjectContainer? Stefan. -- Stefan Bund, Dipl.Phys. a r T e c _____ Entwicklung, Administration visual solutions / | /| |----/_| sbund@artec-berlin.com | / | / Fon: 030 / 884684-0 | Fax: 030 / 884684-15 |/___|/ Gottfried-von-Cramm-Weg 35-37 | Berlin | 14193 | http://www.artec-berlin.com