On 16 Dic, 19:03, "Michael Bayer" <[email protected]> wrote:
> drakkan wrote:
> > Hi,
> > connectionstring = 'sqlite:///' + settings.DATABASE_PATH+'?
> > check_same_thread=False'
>
> > #engine = create_engine(connectionstring, echo=settings.DEBUG,
> > echo_pool=settings.DEBUG)
> > engine = create_engine(connectionstring, echo=settings.DEBUG,
>
> this line:
>
> > pool=NullPool(lambda: sqlite3.connect(settings.DATABASE_PATH)))
>
> negates the effect of the "check_same_thread" flag in this line since the
> fully constructed pool + creation function you're sending means the URL
> isn't used:
>
> > engine = create_engine(connectionstring, echo=settings.DEBUG,
>
> you only need "pool_class=NullPool" in your create_engine here.  Example
> here:http://www.sqlalchemy.org/trac/wiki/DatabaseNotes#SQLite

thanks, this way works better but there is another problem:

1) I make a long select in a separate thread
2) before 1) complete I make an insert or a delete in the main thread
3) when I commit the changes in 2) if the select is still running I
get "The transaction is inactive due to a rollback in a
subtransaction.  Issue rollback() to cancel the transaction."

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