On Mon, Apr 9, 2012 at 5:32 PM, Michael Bayer <mike...@zzzcomputing.com> wrote: > > On Apr 9, 2012, at 8:24 PM, Mitchell Hashimoto wrote: > > > > On Monday, April 9, 2012 12:03:29 PM UTC-7, Michael Bayer wrote: >> >> close your connections after you are finished with them. > > > So I suppose my confusion is where is the "connection" being made. I have a > singleton engine instance running around, and when I query, I basically do > something like this: > > query = select([fields]) > result = engine.execute(query).fetchall() > > Therefore I'm using implicit connections. The reference to the ResultProxy > is quickly gone, which I thought would implicitly close the connection as > well. > > What exactly am I supposed to do here? > > > That pattern will return the connection to the pool immediately after use - > so for that to be the only pattern at play, you'd have to have some > execute() or fetchall() calls that are taking so long to complete that > concurrent executions are timing out. You'd want to look at any > processes/threads hanging or taking very long and causing other concurrent > connections to time out. > > If you aren't using threads or concurrency, and expect that only one > connection should be in use at a time for a given engine, then I'd give the > AssertionPool a quick try which will ensure you're only checking out one > connection at a time, illustrating a stack trace where a second concurrent > checkout would be occurring. >
In addition to fetchall() there are some fetchone() calls as well. I'm assuming in these cases I need to explicitly close the ResultProxy? Mitchell > > -- > 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.
