I am running the same versions you are, and only a couple of times
in 3 months of testing was I ever able to get a 180 backfill from IB.
Once in a while I can get 30 days (though even those often get
throttled).
I have resorted to just buying some historical data from a vendor, and
then relying on IB to keep the symbols up to date with new data every
day - only have to backfill a day or two, which is no problem.
--- In amibroker@xxxxxxxxxps.com,
Keith McCombs <kmccombs@xx.> wrote:
>
> 30 day backfill seems to work Ok.
> Has anybody tried a 180day backfill for 1 minute data?
> Success? or Not?
> Thank you.
> -- Keith
>
> Keith McCombs wrote:
> >
> >
> > This is probably a cockpit problem, and its driving me
bonkers.
> >
> > I just started using IB TWS (893.9) intraday data with AB5.20
and IB
> > plugin 1.8.2. I only have 8 equities in the data base. First,
tried to
> > backfill all at once, with 180 days of data.
> >
> > Soon gave up on that and decided to concentrate on only SPY.
I know
> > that I can't get the full 180days at once because TWS will
throttle back
> > and so AB waits for 2 minutes and then tries to get the rest.
> >
> > Well the first run at, AB gets data from 8/5/08 to 11/21/08,
then waits
> > 2 minutes and try again. I'm expecting that it will then
start at
> > 11/22/08 and begin filling forward. NOPE, now I have only
9/18/08 to
> > 4/21/08 with most days ending at 2:59 instead of 3:59. Two
minutes
> > later, start again, and now we have only 11/13/08 to 4/21/08,
but with a
> > gap from 11/21/08 to 1/5/09. The longer it runs the worse it
gets.
> >
> > Oops -- just checked and Number of bars was 32000. But I
distinctly
> > remember setting it to 130000 for 270 days worth. So I try
again, after
> > setting Number of bars back to 130000, and double checking it.
> > Now I have SPY with data from 9/26/08 9:30am to 1/6/09 4:00pm
and AB
> > gives message saying it is done with SPY. I then try AAPL it
eventually
> > finished with data from 8/28/08 9:30am to 3/6/09 3:59pm; and
then from
> > 3/9/09 to 3/20/09 all data starts at 9:30am and stops at
2:59pm (that's
> > right someone stole the last hour of trading for 10 trading
days (bet
> > that has something to do with DST starting on 3/8/09). No
more data
> > after 3/20/09.
> >
> > Besides the above major problems I have some other concerns,
namely:
> > 1. When and why should I use Save Database?
> > 2. Colored status box for CONN, etc. is sometimes blue and
sometimes
> > green, meaning what?
> > 3. When I hover my cursor over that status boxes it sometimes
displays
> > a message and sometimes not, and when it does it's usually
for less time
> > than it takes me to read the message.
> > 4. With number bars set for 270 days, I'm hoping that I can
get 180
> > days back now and that with time, I can have a maximum of 270
days of
> > data. Can I then increase Number of days to say 360 and keep
adding to
> > the data base, or does data base get erased every time I
change the
> > Number of Bars value?
> >
> > I hope there is some one who is not as overwhelmed by all
this as I am.
> > -- Keith
> >
> >
>