Hi:

I have been having problems in attempting to rebind a given Session
object/class to a different engine instance. It seems that it can only
be bound once. Subsequent sql statements post to the original binding.
I am using sqlalchemy 0.4.6 with elixir. Here is an example:


__session__  = scoped_session(sessionmaker(...))

Session.configure(bind=engine1)

# do sql ops here on engine1 via elixir

__session__.configure(bind=engine2)

# do sql ops here against engine2 via elixir
# sql ops here get written to database that engine1 is pointing to.


The 2 engines I am referring to have identical schemas in different
databases. In fact there may be multiple databases (with the same
schema) in which I need to set the database context before performing
sql operations. I thought the __session__.configure(bind=) would do
the trick but it doesn't seem to be working. Can anyone provide some
insight into how I can use sqlalchemy to write to multiple databases
with the same schema? As shown this app is multithreaded (zope).  I
have received some advice to create a new session instance per schema
(eg: sess=Session()) however elixir only refers to a single session
object/class (__session__)  which makes things difficult. Do I need to
dump elixir and just use sqlalchemy to get this functionality?

Thanks!



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