>several threads per one connection and didn't go too well yep. Not a good idea to mix this with transactions.
On Oct 9, 10:39 am, achipa <[EMAIL PROTECTED]> wrote: > If you check back a few months, you'll see that I experimented with > mysql and several threads per one connection and didn't go too well.. > It's just so much less error prone to have separate connections or a > producer/consumer pattern than debug a deadlock, race conditions or > phantom 'server gone away' situations. > > On Oct 9, 5:33 pm, mdipierro <[EMAIL PROTECTED]> wrote: > > > The problem is that SQLite is not a client-server database and only > > thread can access a SQLite database at one time. If one thread access > > the db file, the file is locked and nobody else can use it until > > released. > > > You should be using postgresql or mysql to do what you are doing. > > > Massimo > > > On Oct 9, 9:10 am, Scott Hunter <[EMAIL PROTECTED]> wrote: > > > > When I tried that, I got the following error when attempting a query: > > > > ProgrammingError: SQLite objects created in a thread can only be > > > used in that same thread. > > > > But when I try to create an SQLDB object in my thread, I get: > > > > OperationalError: unable to open database file > > > > Maybe my thread didn't "instantiate its own connection to the > > > database"; what does this involve? > > > > Thanks, > > > Scott > > > > On Oct 8, 5:58 pm, mdipierro <[EMAIL PROTECTED]> wrote: > > > > > It depends on who starts the thread. The main problem is that the web > > > > server monitors threads and kills them when they take long. > > > > I principle a model, view controller can start its own thread but you > > > > should pass a SQLDB object to it. It needs to instantiate its own > > > > connection to the database and commit or rollback explicitly. > > > > > Massimo > > > > > On Oct 8, 4:42 pm, Scott Hunter <[EMAIL PROTECTED]> wrote: > > > > > > Using the shell command-line option of web2py, one can create a daemon > > > > > with full access to the DB that the webserver has. Is it possible to > > > > > do something similar w/ a thread created within web2py? When I tried, > > > > > I got complaints that my db variable wasn't defined; then I tried to > > > > > include my model file, but got a complaint that it isn't a module. > > > > > > Thanks, > > > > > Scott --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "web2py Web Framework" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/web2py?hl=en -~----------~----~----~----~------~----~------~--~---
