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Yea good luck! It must be a secret. I have the same problem and asked
why about 5 times and no one ever answered why. I hope you get an
answer because I would really like to know why too. I keep importing
data from back up files and it keeps going poof. I have a 320 gig HD so
space isn't a problem. Keeping the data around is a problem. I had
imported data for qqqq back to 2/14/07 in January and I just looked at
it and it now starts in June. I'll be interested in the reply you get.
Cheers,
Barry
--- In amibroker@xxxxxxxxxxxxxxx, "wonet2001" <wonet2001@xxx> wrote:
>
> it's a intraday 1 minute database with IB datafeed, the number of
bars
> in database setting is 30,000, I noticed that the database is limited
> to 30000 bars no matter how long I have accumulated data, my purpose
is
> to accumulate more than six months data for backtesting, but seems I
> keep loosing old data as time goes by.
>
> what is the solution? should I make the number of bars bigger, say
> 500,000? will it affect the performance of AB for my intraday trading?
>
> thanks
>
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