the sessionmaker() object is not GC-able in 0.7 right now due to event mechanics. This issue does not exist in 0.8. I'll add a note.
On Jan 11, 2013, at 1:18 AM, Michael Bayer wrote: > there's some side effect occurring as a result of how 0.7 creates a new > subclass when using sessionmaker. Since you don't need a sessionmaker here, > please use this form: > > return Session(bind=engine, expire_on_commit=False) > > or upgrade to 0.8.0b2. > > > > On Jan 11, 2013, at 1:08 AM, Anoop K wrote: > >> I tried the code in my setup.(SQLAlchemy-0.7.8-py2.6). Looks like engine did >> not got GCed. >> >> [anoop@localhost tmp]$ p engtest.py >> about to delete sn... >> about to gc.collect()... >> Traceback (most recent call last): >> File "engtest.py", line 31, in <module> >> assert engine_is_removed >> AssertionError >> >> >> >> On Thursday, 10 January 2013 18:55:59 UTC+5:30, Anoop K wrote: >> It seems engine created using create_engine is not freed after cleanup of a >> session. Object graph indicates that event.listen for pool is holding >> reference to engine even after session is garbage collected. >> What is the right way/api to delete an engine ? >> >> UseCase >> As there are lot of databases in multiple boxes whose ip/user/password can >> change I would like to destroy session and engine after use. Cost of >> creating/closing connection can be ignored for my use case. >> >> >> >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "sqlalchemy" group. >> To view this discussion on the web visit >> https://groups.google.com/d/msg/sqlalchemy/-/RWBNo1sT1ogJ. >> 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. > > > -- > 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. -- 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.
